Database Users

Universal's A2DP Quality

Hi,
maybe someone can give me some info.
Have a T-Mobile Germany MDA Pro with the newest Stock ROM supporting A2DP.
Have board a brand new Plantronics Pulsar 590A Headset. It works, but the quality of the sound is very very bad with my Universal. I have also tryed the smal A2DP Sender, that comes packed with the Plantronics device and the quality is 100 times better. What is the problem? Can I adjust the bitrate of A2DP transfer in wm 5.0 registry?
The sound is a little much deep and on mid to hig frequencies, i hear a high frequencie noise.
Does anyone else has this problem?
This is not a problem of the receiving device.
Thanks for any help on this :`)

No Ideas?
Please Help!

I have the Qtek WWE ROM on my Qtek (latest official version). I use a Jabra bt620s, and i have no problems with it.
Maybe it's some obstruction of the signal? Do you encounter the problem when the Qtek is in clear view of the headset at a meter away?

I have the Motorola HT820, and finally got round to installing the Qtek WWE ROM today. Connects fine, I can walk into another room from the Uni and have no problems; But -
I also get a high pitched noise, particularly on music with lots of treble. It can be controlled up to a point by tweaking the graphic equaliser, but it is still annoying.
When using the HT820s linked to my Bluetooth PC and laptop, they sound superb - so it is a problem with the universal.

Thanks so far, i start hating my Universal ....
I think, there can be 3 reasons for that.
The Windows Mobile A2DP Software encoder, if it is software encoded.
The Bluetooth Chip, if it is HW encoded in Bluetooth.
The Radio ROM or Chip, if it is encoded on the Radio Processor.
I am not so deep in the Universal Technologie, but i know, that the sound was very clear on Blue Angel using the broadcom stack. So I think, it is M$ Bluetooth that makes the problem, but i am not realy sure.

... or is there anyone how don't has this kind of problem?

Hi,
I personally have never had that problem (which I interperate as "some form of noise" when listening to music over A2DP) you guys mention here, neither with my Motorola HT820's or i-Tech BluePRO's.
Only problems I have had with A2DP and my Universal is;
1. Pause/Resume button not working always in Windows Media Player (works fine in latest version of PocketMusic though)
2. Not automatic reconnect of A2DP when I turn headset on (only prob with the i-Tech's, Motorola's seems to work fine)
3. Occational drop/loss of sound for a second or two (have this under control now, only an issue for me now, when there is to much obstructions between Universal and my i-Tech headset)

RonnyGydar said:
1. Pause/Resume button not working always in Windows Media Player (works fine in latest version of PocketMusic though)
Click to expand...
Click to collapse
I also have this Problem. Sometimes, i have to press, the button twice, sometimes i have to hold it. But the problem apears only, on resume.
RonnyGydar said:
2. Not automatic reconnect of A2DP when I turn headset on (only prob with the i-Tech's, Motorola's seems to work fine)
Click to expand...
Click to collapse
Yes, that's realy evil ... I also have that. Reconnecting of Handsfree works fine.
RonnyGydar said:
3. Occational drop/loss of sound for a second or two (have this under control now, only an issue for me now, when there is to much obstructions between Universal and my i-Tech headset)
Click to expand...
Click to collapse
This is a general Universal Problem. Maybe Radio Interference, maybe missing some CPU power.
The noisy and unclean sound can be a ROM Version Problem, if you don't have that. I have tryed also with a Linux Computer as A2DP SINK Client, and the sound is same bad.
That's my ROM Version Info:
ROM-Version: 1.30.113 GER
Radio-Version: 1.10.03
Protokoll-Version: 42.44.P8
ExtROM-Version: 1.30.223 GER
Windows Version is 5.1.195 (Build 14847.2.0.0)

EyeOfTheStorm said:
I also have this Problem. Sometimes, i have to press, the button twice, sometimes i have to hold it. But the problem apears only, on resume.
Click to expand...
Click to collapse
Try downloading the latest PocketMusic version (if free for 30 days I think...so you'll be in heaven for 30 days at least), there it works perfect. ...it was enough for me to "cough up" the money to buy it!
And yes it seems to be every second time, and then one has to press button on Universal/Media Player once...bloody irritating...when the Universal is in the bag or something.
EyeOfTheStorm said:
Yes, that's realy evil ... I also have that. Reconnecting of Handsfree works fine.
Click to expand...
Click to collapse
Yepp, I have exactly same behaviour (handsfree no prob, while A2DP needs manual reconnect with iTech's...but with the Motorola HT820's I belive it was automatic though)
EyeOfTheStorm said:
This is a general Universal Problem. Maybe Radio Interference, maybe missing some CPU power.
Click to expand...
Click to collapse
For me I am pretty sure it is pure radio problem now (have tested with an app called SuperTask, and A2DP takes approx 20% CPU, and my JasJar now used a total of 40-45% CPU when I listen to music over A2DP with PocketMusic). I only have this problem when I have the JasJar in my pant pockets, are in an area I know there is a lot of interference+have some obstructions. Except from that it is fine now.
You can see this post on my "socalled test" (it was just a simple test, but it seems to give a good indication at least) of A2DP's effect on CPU here;
http://forum.xda-developers.com/viewtopic.php?t=53717
You can see my (and some others) experiences with A2DP and some stuff we have tried to fix/handle it as good as possible;
http://forum.xda-developers.com/viewtopic.php?t=53431&sid=87c2c327d12afa647df4d8773a330ee2
EyeOfTheStorm said:
The noisy and unclean sound can be a ROM Version Problem, if you don't have that. I have tryed also with a Linux Computer as A2DP SINK Client, and the sound is same bad.
That's my ROM Version Info:
ROM-Version: 1.30.113 GER
Radio-Version: 1.10.03
Protokoll-Version: 42.44.P8
ExtROM-Version: 1.30.223 GER
Windows Version is 5.1.195 (Build 14847.2.0.0)
Click to expand...
Click to collapse
I have no clue...do you have a Universal (I would guess so from that you post it here )...if so the HW is identical...so then...yes it should be the SW/ROM...since you actually have tried with another "headset" (your Linux computer). But I am sorry, that I am not much of contribution...if nothing else...I agree with your logic here!
BTW my ROM version++ is stated in the A2DP-test post I linked to above (don't remember the numbers...but I have the "latest QTEK WWE" ROM).

Thanks for your comments.
Maybe it's the T-Mobile Germany ROM that is the Problem. Have allready called the technical support at T-Mobile, to help.
Maybe they are ignoring me, but i have tryed.

Universal's blue tooth signal terrible
Look I had many imate devices and bluetooth sets. The Universal has a very weak bluetooth signal even with normal bluetooths.
I have tried 3 or 4 different bluetooth headsets and they all give me a max of 3 meters. With the Jam and pda2k with the same headsets I used to get 10meters.
I gues this is the reall problem you are facing, the bluetooth reception is terrible on Universal, try being really close like 40CM away and if the sound is good you will know that it is only a reception issue from the universal.

I noted the 40 ~50 cm distance problem when I reviewed my nokia hs-12w a2dp headset about a month ago, it is very irritating. I think it is to do with where the BT chip is placed !!! it is between the keyboard and the battery, from what I could tell of the exploded diagram on this site !! meaning it is surrounded by metal !!! not good .
PS I never have problems connecting my hs12w headset for audio use, however if I take a phone call, after the call has ended I loose AVRCP

EyeOfTheStorm said:
The sound is a little much deep and on mid to hig frequencies, i hear a high frequencie noise.
Click to expand...
Click to collapse
How do you play sounds over bluetooth ?
I'm trying to understand the routes of analog and digital
sound data and how to control them.

cr2 said:
EyeOfTheStorm said:
The sound is a little much deep and on mid to hig frequencies, i hear a high frequencie noise.
Click to expand...
Click to collapse
How do you play sounds over bluetooth ?
I'm trying to understand the routes of analog and digital
sound data and how to control them.
Click to expand...
Click to collapse
Hi cr2,
yes I read about it in IRC Log. But what you like to do is, streaming sound direct to the bluetooth hardware. Universal hardware supports this feature. There are 2 Bluetooth Profiles implemented for, one is called "Handsfree" and one is calles "Headset" and ini Windows Mobile Registry you will find it if you look for "Audio Gateway". The registry values are also documented in the online MSDN Lib. I will post a link, later, if I find it.
What I am doing is A2DP, that means ... all stereo sound will be compressed in software and then send as datastream to the bluetooth device.
Have attached the A2DP specification. Under Linux there is a project calles "bluetooth-alsa", that supports A2DP and Handsfree. Look for it at sourceforge.net.

EyeOfTheStorm said:
all stereo sound will be compressed in software and then send as datastream to the bluetooth device.
Click to expand...
Click to collapse
There are several options here. It can be sent directly
on some phones, or (theoretically) through the phone,
or even redigitized from the analog (for mono).
Under Linux there is a project calles "bluetooth-alsa", that supports A2DP and Handsfree. Look for it at sourceforge.net.
Click to expand...
Click to collapse
Software is not a problem. We need to understand
what the hardware is doing.

A2DP Skipping - Solution?

This subject seems to have been beaten to death in the other device forums, but I haven't seen any direct references to this in the TyTN forums, so here goes: has anyone who experienced the ( every 10-20s) skipping problem using the A2DP profile found a solution?
I've seen a couple of registry hacks in other forums which seem to have worked for others, but nothing so far about the TyTN.
I have everything working now with WMP except this and the issue with the ring tone being delayed and coming only from the headset; see my other post this morning.
So far no other problems with the TyTN.
/POL

Skipping happens on my TyTN mostly when the WiFi radio is on. When turned off, the music skips only every now and then.

Stefan Mensink said:
Skipping happens on my TyTN mostly when the WiFi radio is on. When turned off, the music skips only every now and then.
Click to expand...
Click to collapse
Not in my case. Wifi is turned off, and I still get skipping every 10-20 seconds.
/POL

Improvement of Bluetooth Listen Music
Find this registry : :idea:
HKLM/SOFTWARE/Microsoft/Bluetooth/A2DP/Settings/UseJointStereo (Dword:1)
Change the Value to 0
Also you can add a new registry to improve the quality:
HKLM\Software\Microsoft\Bluetooth\A2DP\Settings
Add : BitPool [Dword : 48] Maximum is 58

sas90850 said:
Improvement of Bluetooth Listen Music
Find this registry : :idea:
HKLM/SOFTWARE/Microsoft/Bluetooth/A2DP/Settings/UseJointStereo (Dword:1)
Change the Value to 0
Also you can add a new registry to improve the quality:
HKLM\Software\Microsoft\Bluetooth\A2DP\Settings
Add : BitPool [Dword : 48] Maximum is 58
Click to expand...
Click to collapse
Yes, I've done these mods which set to stereo (why on earth have mono as default?) and select audio quality, but these don't affect the skipping.
Unless lowering the BitPool value will cure the skipping - but I want to keep it at 48 at least.
/POL

Check through my notes thread here. There's been some research going on with priority settings and specific bitpool min/max values. However, there appears to be more than just reg settings at work though. The entire device slows to a crawl too. My gut feeling is that this won't be addressed until HTC releases their first official update, rumored to be in a few weeks or so.

i have done that but still skips every 30 secs or so.

Interestingly, I could hear the same "tick" on my 8125 as well but it sounded like a slight scratch on a record. On the TyTN its magnified to this major dropout. I'm really thinking our only A2DP solution will be to wait for the updated ROM I'm afraid.
Let's hope they don't take the coward's way out and remove A2DP altogether as was done in several Operator's initial AKU2 release for the Wizard.

I think you guys should look into optimising your SD cards and trying the reg entries sleuth255 indicated. My A2DP seems to work fine with probably 99% skip free playing. I'm currently one floor above my Nokia HS-12W and am still connected to my TyTN ok in certain parts of the room. If i am right beside it or in the same room I dont get any skips at all; apart from when I lose or reaquire a GSM signal.

well, that's encouraging news efjay! Much better results than I ever got. Btw: are you running the newer DoPod rom onto your TyTN by any chance?
edit: nevermind; I just used the Wiki to crossref. If your signature is correct then you've got the standard TyTN ROM build running.

Yes im running the TyTN rom. I actually had the Dopod rom but apart from a few things in the extended rom wasnt too different so i flashed back to the TyTN one. A2DP works ok now, was listening most of the day and the TyTN battery even outlasted the Nokia battery.
Another good point in the Nokia's favour is you can re-establish a stereo connection without having to go to the BT settings - just push the Audio button and it reconnects for you and the music starts.

efjay said:
I think you guys should look into optimising your SD cards and trying the reg entries sleuth255 indicated. My A2DP seems to work fine with probably 99% skip free playing. I'm currently one floor above my Nokia HS-12W and am still connected to my TyTN ok in certain parts of the room. If i am right beside it or in the same room I dont get any skips at all; apart from when I lose or reaquire a GSM signal.
Click to expand...
Click to collapse
Some good news on my part! I've done all the mods suggested by sleuth255 - except lowering the BitPool value to 5 - I suspect that would decrease the audio quality too much - and I now have skipping only about once a minute. Much better.
How do I go about optimizing the (micro)SD card?
/POL

politby said:
efjay said:
I think you guys should look into optimising your SD cards and trying the reg entries sleuth255 indicated. My A2DP seems to work fine with probably 99% skip free playing. I'm currently one floor above my Nokia HS-12W and am still connected to my TyTN ok in certain parts of the room. If i am right beside it or in the same room I dont get any skips at all; apart from when I lose or reaquire a GSM signal.
Click to expand...
Click to collapse
Some good news on my part! I've done all the mods suggested by sleuth255 - except lowering the BitPool value to 5 - I suspect that would decrease the audio quality too much - and I now have skipping only about once a minute. Much better.
How do I go about optimizing the (micro)SD card?
/POL
Click to expand...
Click to collapse
Forgot to say that this time I actually listened to music for about 10 minutes and the device does indeed slow to a crawl. Pretty much non-responsive, actually.
/POL

politby said:
efjay said:
I think you guys should look into optimising your SD cards and trying the reg entries sleuth255 indicated. My A2DP seems to work fine with probably 99% skip free playing. I'm currently one floor above my Nokia HS-12W and am still connected to my TyTN ok in certain parts of the room. If i am right beside it or in the same room I dont get any skips at all; apart from when I lose or reaquire a GSM signal.
Click to expand...
Click to collapse
Some good news on my part! I've done all the mods suggested by sleuth255 - except lowering the BitPool value to 5 - I suspect that would decrease the audio quality too much - and I now have skipping only about once a minute. Much better.
How do I go about optimizing the (micro)SD card?
/POL
Click to expand...
Click to collapse
Check out this guide from Menneisyys
http://www.pocketpcmag.com/forum/topic.asp?TOPIC_ID=17921
Or the short version - get SK Tools (trial version should be ok, if not it costs $13) and format your card but make sure the backup FAT table is disabled.
I used it with the default cluster size values and also have other registry tweaks applied and A2DP works; I am even able to browse via GPRS when streaming music.

A2DP and WLAN - no such luck!
It became obvious to me today that using a stereo Bluetooth headset while connected via WiFi is a non starter. Continuously skipping audio and the device hangs after a few minutes and needs a restart.
There goes my dream of listening to Internet radio over a WiFi connecIttion. It works over a UMTS connection but since my carrier doesn't have an unlimited data plan, that's an expensive proposition.
Didn't HTC test such an obvious scenario?
Bummer.

@efjay:
Ok, so I'm now up to speed on SD card optimization having read through Menneisyys' post on this. Now to the nitty gritty... I have a 2gig SANDisk card so FAT16 is pretty much out due to the huge cluster size that it would create. I'm going to eliminate my FAT backup, go with FAT32/8k cluster sizes. I forget how many entries a FAT32 table can have but if that won't give me a full 2GB then I'll bump the cluster size up to 16K.
One A2DP note however: I did test with an mp3 file located in main memory and there was no improvement in skipping, so I came to the initial conclusion that SD card access speed wasn't an issue.

Sleuth255 said:
@efjay:
Ok, so I'm now up to speed on SD card optimization having read through Menneisyys' post on this. Now to the nitty gritty... I have a 2gig SANDisk card so FAT16 is pretty much out due to the huge cluster size that it would create. I'm going to eliminate my FAT backup, go with FAT32/8k cluster sizes. I forget how many entries a FAT32 table can have but if that won't give me a full 2GB then I'll bump the cluster size up to 16K.
One A2DP note however: I did test with an mp3 file located in main memory and there was no improvement in skipping, so I came to the initial conclusion that SD card access speed wasn't an issue.
Click to expand...
Click to collapse
Let us know how it goes. I am still getting skip-free playback via A2DP. If it doesnt work maybe the additional reg tweaks I applied to the system cache are what is making the difference.

efjay said:
Sleuth255 said:
@efjay:
Ok, so I'm now up to speed on SD card optimization having read through Menneisyys' post on this. Now to the nitty gritty... I have a 2gig SANDisk card so FAT16 is pretty much out due to the huge cluster size that it would create. I'm going to eliminate my FAT backup, go with FAT32/8k cluster sizes. I forget how many entries a FAT32 table can have but if that won't give me a full 2GB then I'll bump the cluster size up to 16K.
One A2DP note however: I did test with an mp3 file located in main memory and there was no improvement in skipping, so I came to the initial conclusion that SD card access speed wasn't an issue.
Click to expand...
Click to collapse
Let us know how it goes. I am still getting skip-free playback via A2DP. If it doesnt work maybe the additional reg tweaks I applied to the system cache are what is making the difference.
Click to expand...
Click to collapse
I've found another issue with the wireless stereo profile - sometimes when a call comes in, pressing the call button on the headset will answer the call, but there is no sound (caller can't hear me and I can't hear the caller). To get the call going, I have to "disconnect handsfree" from the call in progress menu and then press the headset button again.
Anyone else seen this?
/POL

joint stereo is not mono
joint stereo is merely a way to improve compression efficiency -- and can even be used with lossless (stereo) codecs

so is there any progress? I have the same trouble with my Anycom BSH-100 .. it is skipping every 30-50s
thx

x7500 - Jabra 8010: voice disruptions/discontinuance reported by people I talk to

Hi guys,
I am wondering about the happiness of the union X7500 - Jabra 8010. Sometimes people I talk to tell me that they barely understand me because they hear disruptions/discontinuance in a voice coming from my side. This almost never happens for voice coming from other party. I am not saying the "couple" is responsible for this but it gets me thinking... What could be the reason for this? Why voice is not corrupted in both direction (up&downlinK)? Ohh, I have the BT configured to Stereo, but I think there is no difference in case of mono…
Is there any way I could test the voice quality coming from/to Jabra? Resco Audio Recorder? Anything else….?

jabra 8010 promblem with athena
i have the same problem.

This problem not only happens with my Jabra BT8010, but also with my other bluetooth headset i.Tech Clip D.

I have the same problem too, but not always happen this. Sometimes the quality is good, sometimes bad. If the headset properties on Athena is hands free the outcoming voice is clear. If you're connecting the Jabra with Athena and there aren't any stereo icon on taskbar coming up, the problem dont ocure.
I have WM5 on athena. Perhaps WM6 will solve this bug (Or a new Jabra update).
I tried it with another phones and it worked good.

Hi!
I have contacted HTC support for this and just received their reply. Man, they are "really quick" - 2.5hours - for the bullsh#!#t answer they provided...
Her is the reply:
"Good morning
We are very sorry to hear you are having problems with Bluetooth. You may find that Windows Mobile 6 may cure this problem when it is released for your device on the HTC eClub.
For now we would recommend using a compatible recommended Bluetooth headset as below:
http://www.expansys.com/htc/p_htc_item.aspx?i=150737
Thank you for your enquiry, Should you have any other problem, please do not hesitate to call us. Your Local number can be found at http://www.europe.htc.com/support/csbyphone.html
"
I shall install Resco Audio Rec and try to record one of these problematic calls. Maybe it will make a difference presenting direct "evidence"...
Any other ideas?

I've got an X7501 Advantage with WM6 on it. I'll be getting the BT8010 in a week or so. I could test this out if that would help.

I have X7500 WM6 Jabra BT8010.
It just disconnects at random times. I will go back to my Jabra BT500 and use the BT8010 only when I want stereo music or other audio output.
Hopefully Jabra will take a look at this problem.

Bluetooth priority patch?
Just curious, have you guys tried installing the Bluetooth priority patch?
http://forum.xda-developers.com/showthread.php?t=262119
I believe it increases the priority given CPU wise for the bluetooth audio. It actually resolved a problem I was having with my BT8010 and the Universal, the audio during a call was a little choppy and callers reported that my voice was frequently dropping out no matter how close the device and headset were. After downloading and installing the registry edit in the 1st post of the thread I linked to above, problem is gone.
Please let me know if this works, I'm considering purchasing an Advantage and would want to know if it works with my Jabra BT8010.
Thanks,
Galt

hi guys
i've got the same problem.
but not only when using my jabra bt250v
but also when using the wired headset, or no headset at all
so imho this is not a bluetooth related problem
after installing wm6 the problem didn't improve at all.
HTC produce the best WM devices out there
and the Advantage is their flagship device.
These problems with the most basic function shouldn't happen.
And HTC's answer is just poor!
I'm sure they know about this problem and also know that WM6 doen't fix it
(or at least not the ROMs available until today).
I'm still waiting for another RadioROM to fix this fault.

hi galt,
Thanks for your post. I have manually entered the fix form your link:
"Make a new Dword value and name is Priority256 and then for the DWORD Data value make that 60 save and reboot. Presto no more lag, cuts or audio drop outs." since the attached reg file did not have the contents the author has been talking about. I made this reg file with a fix and would like to share with you...
I will test it and let you know how it goes...
Uros

Could someone monitor battery consumption with this fix?
There was a similar fix with A2DP and the current consumption was crazy, so I uninstalled it...

Good news so far
1. With the fix installed and the X7500 "at rest", there is no additional current drain = 90 mA.
2. With BT on playing music throught the Jabra BT8010 the current drain is about normal = 320 mA.
3. With BT off, the current drain returns to normal "at rest" current of 90 mA. With A2DPfix the current drain remainded at 400+ mA.
Good news so far!
NOW: the remaining question: Does it solve the problem of dropout?
I'll try it for a day or so and report back.

GREAT news so far
After 4 hours of listening to music (X7500 WM6 BT8010) with Priority256 installed, I can report:
1. One BT dropout that lasted less than 1 second!
2. Normal battery drain!
I have not used the phone enough to know if there will be and BT disconnects or voice issues, but I will report back on these issues soon.
Looks very good at this point.

So far so good
Hi,
It worked for me as well . Almost completely gone, except some tiny/small discontinuance from time to time... GREAT!

I've been using this fix for 3 days and so far having no complain from the people I talked to. Good fix indeed.

Thanks for posting the zip file, makes installation painless. Testing right now!
Well, so far so good. I did experience 2 or 3 drop outs during music play, but I can not contribute them to the device as I was in my office and an ambulance put on their sirens, somehow there must of been some interference.
The best thing about music play was that when the player switched to each successive song, there used to be an audible click or bump, that just isn't there now!

Did anyone ever confirm if this fixes outgoing audio problems? I've had several callers complain of noise/breakups coming from me, when they sounded normal. I know it wasn't a signal issue since this happens when the Advantage is next to me, and I've used my 8010 from 50 feet away through multiple cube walls plus one real wall...

techntrek said:
Did anyone ever confirm if this fixes outgoing audio problems? I've had several callers complain of noise/breakups coming from me, when they sounded normal. I know it wasn't a signal issue since this happens when the Advantage is next to me, and I've used my 8010 from 50 feet away through multiple cube walls plus one real wall...
Click to expand...
Click to collapse
Try to upgrade your Radio ROM to v1.50. That'll solve most of your bluetooth problems.

Bluetooth AD2P & Carkit connection

There are a lot of problems with carkit connections & the HD2.
I tried several things to get it working without success.
When I try to connect to the JVC KD-AVX44 it connects but give no sound at all. (making 2 connections, handsfree & stereo audio)
Then I tried the registry tweak mentioned into this forum and had success once. I was very happy because also the title track was shown onto the JVC display and also the phone was functioning ok both ways.
The sound trough AD2P was perfect. Only one time.
After that i get a lot of disconnects.
Then I tried to make only connection with the phone function and this is working ok now. When I want to make the connection trough AD2P then the problem is back. Also when you make it without making the phone connection
So I think the problem lies into the stereo connection. For instance when you skip a track onto the JVC then the connection will be lost and reconect again and giving 2 seconds of sound and then it's quiet again.
Also when to 2 connections exists the phone is blocked by incomming calls because it's thinking it's connected so the earpiece & mic are dead at that time. And also the radio.

Did you try the LineSpeed setting to 256 in the AV key of the Widcomm registry settings ?
Don't know if it could help in your case but it did for me, I don't have disconnects with my Sony headphones anymore and sound is better.

Bluetooth
Ok thx I will give it a try and post the results.

which registry tweak did you applied first, cause i too keep having issues...?

tweak
Change Registry setting:
HKEY_LOCAL_MACHINE\Software\Microsoft\Bluetooth\Sys
Add the DWORD setting COD=5374476
This makes devices see the HD2 as a 'Normal' phone

Do I have to add this line somewhere? I found the AV key into widcomm but the line was not there

valos said:
After that i get a lot of disconnects.
Click to expand...
Click to collapse
Try turning WiFi off on the phone, it makes a big difference on my IO Play system.

valos said:
Change Registry setting:
HKEY_LOCAL_MACHINE\Software\Microsoft\Bluetooth\Sys
Add the DWORD setting COD=5374476
This makes devices see the HD2 as a 'Normal' phone
Click to expand...
Click to collapse
Ok i make this in my BMW X5 and one of problems is solved - HD2 working correct when i am on call and power the car, but i have another problem - after 5 - 6 min on call Bluetooth connections is droped and i can't lisen nothing from Car or for Phone - i must to press Menu and switch off Hands free to continue conversation.

Ok but are you also making stereo connection. I only have the handsfree conected at this time and then the connection is stable. Only with the A2DP it goes wrong.

valos said:
Do I have to add this line somewhere? I found the AV key into widcomm but the line was not there
Click to expand...
Click to collapse
Yes, you have to add the key, sorry not have said that.

kmeta said:
Ok i make this in my BMW X5 and one of problems is solved - HD2 working correct when i am on call and power the car, but i have another problem - after 5 - 6 min on call Bluetooth connections is droped and i can't lisen nothing from Car or for Phone - i must to press Menu and switch off Hands free to continue conversation.
Click to expand...
Click to collapse
Strange, so far I didn't experience any disconnection.
I have conversations during more than 20 minutes daily and line quality is far better than with my Diamond, with no drops.
With the Diamond I had the BT stopping regularily on the phone, it was very annoying because I always discovered it when receiving a call and not being able to answer.
So far it didn't happen on the HD2, but it is really too soon to jump to any conclusion.
I don't use A2DP in the car as I didn't order the option, which I viewed as useless because the hard disk capacity of the iDrive is sufficient to hold a good collection, the audio quality and functionality is much better and I can still connect the phone to the USB plug as mass storage if I want to play or transfer something from it or any memory stick or external HD.
So maybe not having the A2DP profile active may help also.

I also not any problem with my old HTD HD and Cruize ... but with HD2 i have this issue.
Today i receive answer of my ticket from HTC: they offer me to contact with BMW and to ask them why they not support HD2 ... I think this is stupid becouse every new device must support old protocols and older devices.
Now the choice is to change Car or Phone ... sorry but HD2 not have any chance to survive.

kmeta said:
I also not any problem with my old HTD HD and Cruize ... but with HD2 i have this issue.
Today i receive answer of my ticket from HTC: they offer me to contact with BMW and to ask them why they not support HD2 ... I think this is stupid becouse every new device must support old protocols and older devices.
Now the choice is to change Car or Phone ... sorry but HD2 not have any chance to survive.
Click to expand...
Click to collapse
Yes how lousy is that
Got the same answer first, but they realised that BMW coudn't recall thousands of vehicles to do a BT upgrade just because HTC decided to adopt the crapy Widcomm BT stack.
So they say they are working on a fix, but given how many issues there are with this stack, they better switch back to the old MS stack instead.
To be clear, it is the Widcomm stack at fault here, not BMW. Every single phone not equipped with this stack, I could try on the BMW, worked flawlesly.
I hope they will recognise this officialy and not blame the others each time a customer opens a ticket about these flaws.
In the meantime, the registry hack works perfectly for handsfree profile, but it seems it doesn't fix everything when the A2DP profile is activated.

MacGyver4321 said:
Yes how lousy is that
Got the same answer first, but they realised that BMW coudn't recall thousands of vehicles to do a BT upgrade just because HTC decided to adopt the crapy Widcomm BT stack.
So they say they are working on a fix, but given how many issues there are with this stack, they better switch back to the old MS stack instead.
To be clear, it is the Widcomm stack at fault here, not BMW. Every single phone not equipped with this stack, I could try on the BMW, worked flawlesly.
I hope they will recognise this officialy and not blame the others each time a customer opens a ticket about these flaws.
In the meantime, the registry hack works perfectly for handsfree profile, but it seems it doesn't fix everything when the A2DP profile is activated.
Click to expand...
Click to collapse
After much playing around - I found a linespeed of 300 works best for the HD2. 256 still has questionable quality and 320 for some reason skips a lot. Reducing it to 300 seems to be a workable equilibrium!

Bluetooth Stereo Sound Quality Not Good

All,
Does anybody have any fixes regarding the sound quality when using Bluetooth A2DP protocol? I use my Evo to mate with a Bluetooth receiver so I can listen to Rhapsody over my home stereo. The sound quality is flat. The high frequencies are not present. It sounds like a bad quality MP3. I know that its the A2DP causing the quality issue as directly connection (through 3.5 jack) is awsome.
The Apple 3GS A2DP sound quality was awsome. I am not sure why the Evo is not sounding good. Any help would be most appreciated.
Thanks,
Lance

use the cyanogen rom--this uses a bitpool of 53 giving you the best bluetooth quality possible. the stock/sprint/htc bluetooth drivers are set for a bitpool of 32

Is there any other ROM that has the bit pool set to 53?
Lance

Nope all Sense roms use HTC's ****ty low bitpool setting. This is why I'm running CM as well it's the only rom I can A2DP to my Sony Head unit and get good audio. I attempted to contact HTC about this issue here's the juicy details
Here's my initial question
I have terrible static when streaming music over A2DP on my HTC EVO to my sony mex-bt2800 car radio. If I use CyanogenMod 6.0 which uses a open source bluetooth stack my A2DP is crystal clear to my radio. I have used logcat to look at whats going on I dont know if its a bitrate problem or a bitpool problem or if my radio isn't in your acoustic database.
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
Here's the response I received
Although the android software has been updated to be more compatible with Bluetooth headsets and car kits. Most of the time a Bluetooth manufacturer will have a list on there website stating devices they have found compatible, but this is not always the case. From the information on your issue it seems that your device is simply not fully compatible. The only thing we would be able to recommend would be to try another headset.
Then my response back
I would like an Engineer to read my question if possible since I don't think you fully grasp what I'm saying here. First My EVO's Bluetooth A2DP WORKS 100% clearly when using a Open Source ROM which implements Bluez Bluetooth stack http://www.bluez.org/
When I run your Sense UI ROM the Stock ROM you release which uses your own proprietary Bluetooth Stack I get static in the background so you cant really say its my phone now can you? Its your implementation that's not working properly. I'm not about to try every car stereo till I find one that works with the EVO when I know my stereo can work perfectly with my phone when using a properly coded open source Bluetooth stack.
Here is some extra info from a logcat that shows how your Bluetooth makes a connection through A2DP and what I believe is too low of a bitrate or bitpool setting
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
PLEASE DON'T GIVE ME A ANSWER THAT YOU JUST READ FROM A SCRIPT. I would like a true response from someone who understands and can grasp my question fully like an engineer or a developer, when you give me a generic response of oh your Bluetooth headset isn't compatible keep buying new ones till you find one that works, that really makes me upset since you didn't even read my question it's a car stereo and there not cheap.
I await your educated answer.
And there final bull**** reply
We apologies for any inconvenience you may be experiencing. We will document your concern for review in development of our upcoming devices and future software updates. The situation is still an incompatibility with our device and your car kit weather on software or a hardware level. Unfortunately at this we have no further information beyond what has already been provided.

P_Dub_S said:
Nope all Sense roms use HTC's ****ty low bitpool setting. This is why I'm running CM as well it's the only rom I can A2DP to my Sony Head unit and get good audio. I attempted to contact HTC about this issue here's the juicy details
Here's my initial question
I have terrible static when streaming music over A2DP on my HTC EVO to my sony mex-bt2800 car radio. If I use CyanogenMod 6.0 which uses a open source bluetooth stack my A2DP is crystal clear to my radio. I have used logcat to look at whats going on I dont know if its a bitrate problem or a bitpool problem or if my radio isn't in your acoustic database.
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
Here's the response I received
Although the android software has been updated to be more compatible with Bluetooth headsets and car kits. Most of the time a Bluetooth manufacturer will have a list on there website stating devices they have found compatible, but this is not always the case. From the information on your issue it seems that your device is simply not fully compatible. The only thing we would be able to recommend would be to try another headset.
Then my response back
I would like an Engineer to read my question if possible since I don't think you fully grasp what I'm saying here. First My EVO's Bluetooth A2DP WORKS 100% clearly when using a Open Source ROM which implements Bluez Bluetooth stack http://www.bluez.org/
When I run your Sense UI ROM the Stock ROM you release which uses your own proprietary Bluetooth Stack I get static in the background so you cant really say its my phone now can you? Its your implementation that's not working properly. I'm not about to try every car stereo till I find one that works with the EVO when I know my stereo can work perfectly with my phone when using a properly coded open source Bluetooth stack.
Here is some extra info from a logcat that shows how your Bluetooth makes a connection through A2DP and what I believe is too low of a bitrate or bitpool setting
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
PLEASE DON'T GIVE ME A ANSWER THAT YOU JUST READ FROM A SCRIPT. I would like a true response from someone who understands and can grasp my question fully like an engineer or a developer, when you give me a generic response of oh your Bluetooth headset isn't compatible keep buying new ones till you find one that works, that really makes me upset since you didn't even read my question it's a car stereo and there not cheap.
I await your educated answer.
And there final bull**** reply
We apologies for any inconvenience you may be experiencing. We will document your concern for review in development of our upcoming devices and future software updates. The situation is still an incompatibility with our device and your car kit weather on software or a hardware level. Unfortunately at this we have no further information beyond what has already been provided.
Click to expand...
Click to collapse
Well I commend you for trying. This is something that makes me want to tear my hair out so I would love to see this resolved as well.
good on ya mate.

anyone know how to get another bluetooth stack on stock rooted 2.2?

I asked Flipz a while ago but I don't think he's looking into it. I also asked Netarchy he said he would look into it sometime but that i shouldn't hold my breath since he hadn't even looked at the code yet. HTC has released the source for their Bluez implementation so all we need is a dev willing to look into adjusting the bitpool setting.

This is a HUGE problem. I am flashing CM6 right now. HTC I am very disappointed with you..

The cyanogen rom also has great dsp equalizer

CyanogenMod will also make you a tropical island than transform your EVO into a jet plane and take you there ;-)
But in all seriousness, yeah, CM6 has BT fixed. One of my friends nagged Cyanogen about it last month, and he patched it right away.

I wish somebody could help us by increasing the bitpool on the Bluetooth driver. The Evo would be so much more enjoyable (for me at least) if the sound quality was better thru A2DP.

lancer123 said:
Is there any other ROM that has the bit pool set to 53?
Lance
Click to expand...
Click to collapse
It would be nice if there can be a patch of some sort...

Just an update today I got a call from HTC customer service since i gave a poor review of my experience on a survey they sent me. Talked in great detail about our problem with the Bluetooth stack told him about the bitpool setting how its 53 on CM and 35 on there roms. So hopefully on the next update well get a fix for the Stock Sense UI rom.

^^LMAO!!! dont blv the hype

I read that the CM6 ROM has this issue fixed. I have also read reports that the ROM email client doesn't support word wrapping (which I really do need). Can anybody confirm this?
Also,
Can anybody in ROM land please create a patch or an update to their ROM which increases the Bitpool to 53? I understand that the Bluetooth driver code has been released.
Thanks

bump............

any roms address this yet?

greenail said:
any roms address this yet?
Click to expand...
Click to collapse
maybe:
* Added DSP Manager (Digital Signal Processing) to boost audio and equalize sound for Headset, Phone Speaker and Bluetooth devices.
wont let me post links, but you know what to do:
forum.xda-developers.com/showthread.php?t=793471

I am using the latest OTA, rooted, along with the latest pandora and the bt audio quality is much better. I have the motorola t605.
With the initial 2.2 update bt quality sucked but now it's better.
Sent from my PC36100 using XDA App

mchlwvr614 said:
I am using the latest OTA, rooted, along with the latest pandora and the bt audio quality is much better. I have the motorola t605.
With the initial 2.2 update bt quality sucked but now it's better.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
That was a streaming issue, not a bitpool issue.
The BT audio was a lot better on my TP2 when I updated the registry bitpool to 48 from 32.
I wish they would fix it.