Database Users

A2DP High Frequency Noise

Does anybody find that when listening MP3 through Bluetooth stereo headset, there is high frequency noise follows every voice of the song, however this high frequency noise does not appear when slience. I am using PocketMusic 4.2.6 and using Nokia HS-12W Bluetooth Headset, I heard some other Atom users' iTech R35 and other Bluetooth Headsets also have this problem.

turn off equalizer

Both equalizers of PocketMusic and Atom have been turned off, however the noise is still existing.

I've got the same poroblem, but I'm using a wizard/8125 with Globesat bth-820.

I also got the same problems with a K-Jam and a Motorola HT820.
I guess it is a problem with A2DP and some headsets.
And maybe it's the cause that the patch isn't officially released: They are afraid of the support towards their clients.
It doesn't bother me very much.

I tried
1. i-Tech S35
2. Gobalsat BT-830
3. Nokia HS-12W
with equalizer off (on/off don't have any effect) using WM10, TCPMP. High frequency noise apeears all the time when listening to music. See the following thread as well:
http://forum.xda-developers.com/viewtopic.php?t=51162&sid=5d6de77e7db8bb9429d8d09f1633a5bc

I followed the instruction from this post to change the registry
http://forum.xda-developers.com/viewtopic.php?t=54621
almost 99% high frequency noise has been eliminated. Go ahead to try it.

Initial A2DP findings

Using the M3100 with the itech clip S35 Headset
firstly i've been using the fit4cat tweaker which has an A2DP quality improvememt tweak - unfortunately the tweak makes the quality worse so i've tuned it off and the music quality is not too bad when playing through my car stereo. However, I need to try some decent headphnes with the unit because the ones supplied sound very tinny!
Secondly, when you first pair the device, media player plays through the headset ok. If you then go out of range, when you return the headset re-pairs ok for the phone but the media player doesn't and it plays through the loudspeaker. You have to enter BT settings and recheck the stereo music option to have the sound through the headset again. Anybody getting this with the same or other headsets?
Thirdly, I have the S35 outputting through my car stereo. When people are calling me they can hear an echo (of themselves speaking as the sound comes out through the car speakers). There is some sort of delay i suppose but this is very annoying. I'm not sure why its happening because when I tried the headset using my Sony Ericsson W800i there was no such echo!
therfore, is the echo problem an A2DP thing (as the w800i does not support it and this works ok) or is it a m3100 thing? To test this I could turn off A2DP and ry the headset again - is this possible?
any suggestions appreciated

I have the Jabra BT620s headphones and I have indentical problems.
After install all works well but as soon as you disconnect media player just plays via the phone speaker

at least you guys get it to work once. WMP never plays through my iPAQ bluetooth headset. AVRCP controls work fine though. TCPMP plays fine through the bluetooth headset as long as I pair it up before I execute TCPMP. This is exactly how it worked with my 8125.
The WMP issue is very strange and is likely yet another example of the lack of QA testing in the A2DP portion of the TyTN's implementation. I would expect that these issues will all be fixed in a subsequent TyTN ROM update.

I'm getting on ok with this
quality is pretty good both using the headset with my own sony ear buds. Vast improvement over the itech supplied ear buds.
A2DP - no skipping during normal playback and it works well - quality is not an issue through the car stereo either - not bad at all . I've even been listening to music over A2DP and running sat nav using a GPS BT receiver. A slight pause in music when GPS connects but then all runs well.
My only 2 gripes are:-
1. When you disconnect or go out of range of the headset, it reconnect perfectly with the phone application. This isn't the case with the wireless stereo. I have to enter BT settings, uncheck the wireless stereo setting, save then recheck the setting before it reconnects. Slightly annoying but accesptable (for now)
2. the echo using the headset through my car stereo. People calling me can hear themselves again (about a 0.5 second delay) through the car speakers! Just to repeat my earlier post, this does not happen with my W800i. not sure if its an A2DP problem or something else.

Similarly here, I don't seem to be able to make A2DP (and the handsfree profile, for that matter) work.
Using HTC and an Itech clip, I am able to pair the "wireless stereo" and then play music for some 10 seconds on the GS Player, after which the Wireless Stereo symbol disappears from the top bar and the connection is interrupted. I actually believe that the Itech clip is 'shut off', as I have to turn it on again.
When I try to reconnect the headset, it just won't work and the whole machine is slowed down. Only a soft reset helps.
I hope this is a ROM problem (and not mine) and it'll be fixed soon...

WMP and the Itech clip work fine for me, with the current German ROM.

a2dp issues w/th Hermes
With the CHT9000 WWE rom I had the wireless stereo drop off after about 1 minute, then I would have to reconnect. I flashed to the other dopod WWE ROM (latest) and the problem is gone....sound is comparable to my prophet. Reg tweaks suggested in other forums definetely make the sound quality worse for either ROM version. I think further updated ROM's will improve A2DP reliability (or someone may find a reg hack)...as with the prophet A2DP it just takes time.

Hi guys, I've got the vario ii and the Sony Ericsson HBH-610.
I can add the headset fine and make calls through it, but I don't know how to get the music in wmp to play through it.
If anyone has a few mins spare and could explain it for me I would be really grateful

Headsets..HBH 610...
With my CHT 9000 I use an OMIZ 5660...works great for calls and wireless stereo. I don't have any other headset to compare it to (since I only have used this brand)....I believe that if your "options" do not list wireless stereo then you can't use the A2DP function on your device, at least as it is designed to be used.
I'm not aware of a one-piece headset that supports A2DP that is available (all should have either 2 headphones or two wired ear plugs)..

THE ONLY WAY, I FIND :
I have a 590A Plantronics Bluetooth HeadSet
You must refresh Services of your iTech or your Plantronics !
Go Parameters, Bluetooth, Select your Headset, Refresh.
Then reselect services and Save !
Each time you lost the link (Bluetooth turn off or ...) you will have to Refresh,reselect and Save !
I am searching for a Solve but not find another !

I forget something else !
It is the same thing with my Bluetooth GPS (GNS).

I have a spv m3100 and jabra bt620. They both work like a dream most of the time apart from having to go into bluetooth settings each time I want to connect to the stereo headset option.
I have noticed that when in my garden or at home (a quiet environment probably) that I have excellent streaming but when I am walking around, particularly in built up areas like shopping centres, high streets, tube trains, that there is some loss in the streaming which would seem to point towards some kind of interference.
Why the wireless stereo is set as mono as standard I can't understand. I'm sure its to do with improving the streaming quality, but they are supposed to be STEREO!!! Also I set the quality to 58 instead of 48 and there was a definite loss in streaming quality so I switched back to 48.
The AVRCP also works brilliantly in WMP.
The wireless connection also plays havoc with the bluetooth stereo connection with the buffering of stereo constantly dropping. Also noticed that AVRCP wont work with TCPMP, but as there seems to be some major issues with TCPMP and the Tytn I have uninstalled it for the time being until the guys at CorePacket come up with a fix

I have a spv m3100 and jabra bt620. They both work like a dream most of the time apart from having to go into bluetooth settings each time I want to connect to the stereo headset option.
I have noticed that when in my garden or at home (a quiet environment probably) that I have excellent streaming but when I am walking around, particularly in built up areas like shopping centres, high streets, tube trains, that there is some loss in the streaming which would seem to point towards some kind of interference.
Why the wireless stereo is set as mono as standard I can't understand. I'm sure its to do with improving the streaming quality, but they are supposed to be STEREO!!! Also I set the quality to 58 instead of 48 and there was a definite loss in streaming quality so I switched back to 48.
The AVRCP also works brilliantly in WMP.
The wireless connection also plays havoc with the bluetooth stereo connection with the buffering of stereo constantly dropping. Also noticed that AVRCP wont work with TCPMP, but as there seems to be some major issues with TCPMP and the Tytn I have uninstalled it for the time being until the guys at CorePacket come up with a fix

I have a spv m3100 and jabra bt620. They both work like a dream most of the time apart from having to go into bluetooth settings each time I want to connect to the stereo headset option.
I have noticed that when in my garden or at home (a quiet environment probably) that I have excellent streaming but when I am walking around, particularly in built up areas like shopping centres, high streets, tube trains, that there is some loss in the streaming which would seem to point towards some kind of interference.
Why the wireless stereo is set as mono as standard I can't understand. I'm sure its to do with improving the streaming quality, but they are supposed to be STEREO!!! Also I set the quality to 58 instead of 48 and there was a definite loss in streaming quality so I switched back to 48.
The AVRCP also works brilliantly in WMP.
The wireless connection also plays havoc with the bluetooth stereo connection with the buffering of stereo constantly dropping. Also noticed that AVRCP wont work with TCPMP, but as there seems to be some major issues with TCPMP and the Tytn I have uninstalled it for the time being until the guys at CorePacket come up with a fix

So far A2DP has worked fine for me with my Nokia HS-12W. I have applied some registry settings and optimised my SD card and so far it has played with hardly a skip. Definitely better than my previous BA with WM5.

daddyo said:
Secondly, when you first pair the device, media player plays through the headset ok. If you then go out of range, when you return the headset re-pairs ok for the phone but the media player doesn't and it plays through the loudspeaker. You have to enter BT settings and recheck the stereo music option to have the sound through the headset again. Anybody getting this with the same or other headsets?
Click to expand...
Click to collapse
This is the biggest problem for me with my M3100 at the moment. I'm guessing it will only be fixed by an updated\alternative ROM(?!), any ROM's out there I could try that might get round this problem??
Thanks

hutton118 said:
daddyo said:
Secondly, when you first pair the device, media player plays through the headset ok. If you then go out of range, when you return the headset re-pairs ok for the phone but the media player doesn't and it plays through the loudspeaker. You have to enter BT settings and recheck the stereo music option to have the sound through the headset again. Anybody getting this with the same or other headsets?
Click to expand...
Click to collapse
This is the biggest problem for me with my M3100 at the moment. I'm guessing it will only be fixed by an updated\alternative ROM(?!), any ROM's out there I could try that might get round this problem??
Thanks
Click to expand...
Click to collapse
This is probably headset dependent because with my Nokia HS-12W if i need to reconnect i just press the Audio button and it re-establishes the A2DP connection. No going to BT settings at all.

Interesting, can you just confirm what you mean by the Audio button. Is that just hitting 'Play' in WMP?
Thanks

No, the Nokia has a Music key (not Audio, my mistake) which switches from A2DP to the built-in radio. So if i have lost the BT connection pushing the Music key to select the Audio player will re-establish the connection and music is streamed to the headset. You will see the A2DP icon on the today screen when it has connected and get the chime in the headset.

Ok, thanks for that.
Just one last point, if the connection is lost while music is streaming, does the audio switch to the phone speaker instead??
My problem is I'll be listening to music on the subway then or some reason I'll loose the connection (interferance, low battery...whatever) and immediately music starts coming out the speaker, much to my embarrassment!
Thanks again!

Wifi+A2DP standard MS stack NO GO!

Using my bluetooth a2dp headphones with wifi streaming music[internet radio] is just impossible. The stream plays for the first 5 secs and then stops. Is there anyone who has got internet radio via wifi working with an a2dp headset please let me know.
Thanks

Hi
does it do the same when your not using the headset or is it doing then same when your using the normal internal speakers ?
Regards

I have never had any success with WiFi and a2dp on any pda I've ever owned.
I've used:
TCPMP
Mortplayer (GSPlayer)
Coreplayer
Resco Pocket Radio
and a few more
on:
iPAQ 1940 (Sandisk WiFi and also Socket WiFi SD cards)
iPAQ 2790
and HTC 8525 (TyTN)
It skips and drops and is just plain unusable. Works fine on any wired speakers/headset.
I suspect that there are two causes:
1) the WiFi and the Bluetooth share RF frequencies and are know not to play well together (its getting better, but its not perfect)
2) There isnt enough CPU and/or memory speed to do WiFi, MP3/AAC/etc. and Bluetooth all at once.
Non-a2dp bluetooth headset and WiFi skype also seems to have some issues on the iPAQ, but I havnt tried it on the 8525
I dont think its MS bluetooth Vs Widcomm because the iPAQ 2790 uses Widcomm and the 8525 uses MS (I think) and the both behave badly.

Disappoining but unsurprising
Do the math:
It's an OS running on a puny 400 mHz processor trying to simultaneously mediate and transmit two separate broadcasts on a device that is really just a souped up 1st/2nd generation device. More importantly these aren't open broadcasts, there's likely some form of encryption in one that's run by the OS unless your AP is open. All the while it's also performing the phone function (unless you have that turned off). Frankly, its a wonder I get 5 seconds of sound
I have gotten some decent results from streaming mp3 radio to my headphones via 3G connection- which isn't totally dependent on the OS, but not since I upgraded to WM5; I also get great absolutely fabulous reception on my headphones when playing from the SD card, almost 10 meters range when I'm at the health club. So you take the good with the bad.

A2DP earphone?

Can you recommend me a bluetooth earphone that supports the A2DP protocol?
tnx in advance

BT530, BT8040
I just love both of them...

Sony Ericsson Stereo Bluetooth Headset HBH-IS800.
Pros: Good sound quality. It's very stylish and lightweight.
Cons: Pricy. Battery life (up to 4 hours from spec sheet). (For me, not a problem for daily use)
I love this BT headset anyway.

SonyEricsson HBH-DS980
Pros:
Shows Song Titles/Album and the Time on the display (provided you install the smartWatchm plugin).
Also shows your Recent Calls List & Contact List so you don't have to pull out your phone to make a call.
Easily switches between devices and shows the device name ID.
Cons:
Can't switch headphones with another set.
4-5 Hour battery life.

When you say earphone, do you mean a bluetooth stereo headphone/stereo earphones? OR do you mean a one piece mono earpiece that also supports a2dp?

Bluetooth Problem

I'm having a really hard time getting my Hero to pair with my Motorola H820 headphones as well as my Pioneer stereo. They will only pair if I restart the phone and have the headphones and stereo in pairing mode, then I have to put in the four digit code.
Is anyone else having this problem?
Does anyone know how to fix it?
thanks in advance

i have the issue with my alpine stereo.. it connects and pairs but when i turn off my car it never pairs again, i have to unpair.. turn off the bluetooth and then repair.
it never asks me for the passcode when I connect it, and then it asks me for it after i disconnect it, but by then my alpine stereo doesn't ask for it

Keep an eye out for your Storage Space ROM decreasing with every failure to connect and subsequent reset of bluetooth (or the phone itself).
http://community.sprint.com/baw/message/127560#127560

thanks for posting this. I thought I was the only one.

I am also experiencing a similar problem after I paired with my Kenwood DNX headunit. After I exit the car and leave the proximity of it my phone will flash bluetooth headset disconnected, however even an hour later with my car off and me still in the house the phone will flash the message again.
And now all of a sudden when I get a phone call sometimes, i will hit answer but then the phone auto hangs up.
Is there a way for us to unpair a device? I've looked in all the settings and can't see how to remove a device from the bluetooth list.

Gambit727 said:
Keep an eye out for your Storage Space ROM decreasing with every failure to connect and subsequent reset of bluetooth (or the phone itself).
Click to expand...
Click to collapse
Uh, you *do* know that bug was fixed in the MR, right?

Uh maybe they tried to fix it, but I have the same problem after using the OTA update so it wasn't fixed.

for everyone that is having this problem.
please give me some info on what the parameters are for the alpine bluetooth settings? and the exact model of the stereo. If you could just take a picture of the settings screen on the pioneer.
also : what Rom you are using right now. Maybe try the stock rom (updated MR).

I am not using the Alpine unit, my car has the Ford/Microsoft Sync unit built in, I have no settings other than simply pairing the unit. I have also tried it against my wife's car which has a motorola IHF1000 car kit installed, again no options other than pairing.
The phone is a completely stock Hero, not rooted and the OTA update has been applied. (I had the same issues when I tried fresh 1.1 but have since had Sprint replace the phone)
-TL

Time_Lord said:
Uh maybe they tried to fix it, but I have the same problem after using the OTA update so it wasn't fixed.
Click to expand...
Click to collapse
And you've looked in the filesystem and the core files are showing up again?

Time_Lord said:
I am not using the Alpine unit, my car has the Ford/Microsoft Sync unit built in, I have no settings other than simply pairing the unit. I have also tried it against my wife's car which has a motorola IHF1000 car kit installed, again no options other than pairing.
The phone is a completely stock Hero, not rooted and the OTA update has been applied. (I had the same issues when I tried fresh 1.1 but have since had Sprint replace the phone)
-TL
Click to expand...
Click to collapse
hmm.. sounds weird, maybe you do want to try an upgraded rom then. I have a moto droid with 2.01 on it. It works flawless with my bluetooth stereo (soundstream it is a cheap brand made in china) I can dial through the unit, see my phonebook and everything. It could have something to do with the bluetooth stack in 1.5 (well htc's hacked version of 1.5 (or is it 1.6)) either way. I might be wrong on this one, but I don't think 1.5 supported A2DP, which i think is a requirement on any bluetooth stereo. So once again, I would suggest updating your rom to a 1.6 or higher; or wait for the eclair update if sprint/htc ever pushes it.

wasupwithuman said:
hmm.. sounds weird, maybe you do want to try an upgraded rom then. I have a moto droid with 2.01 on it. It works flawless with my bluetooth stereo (soundstream it is a cheap brand made in china) I can dial through the unit, see my phonebook and everything. It could have something to do with the bluetooth stack in 1.5 (well htc's hacked version of 1.5 (or is it 1.6)) either way. I might be wrong on this one, but I don't think 1.5 supported A2DP, which i think is a requirement on any bluetooth stereo. So once again, I would suggest updating your rom to a 1.6 or higher; or wait for the eclair update if sprint/htc ever pushes it.
Click to expand...
Click to collapse
Actually, 1.5 does support A2DP.

tkirton said:
Actually, 1.5 does support A2DP.
Click to expand...
Click to collapse
I haven't been able to get it to work with my Bluetooth headphones. It pairs but only calls go to the headphones (motorola dj forgot the model number). When I go to the advanced settings for the headphones and check the audio (or music or whatever) option, the connection greys out and stalls.
I'm really interested in this topic at the moment because my car stereo died this week and I'd like to replace it with one that has Bluetooth built in.
I guess my main question is whether Bluetooth on the hero is just hit or miss, or am I missing something?
Running "unofficial" modaco 1.3a

Here let me check something out for you guys.. My old hero (which i gave to my gf) I will try to see if it can sync with my bluetooth stereo today. i have her running the new years release of fresh. I'll get back to you.
hmmm just found this too:
Bluetooth Features by release
Android 2.0 release (Eclair)
Java API features
Bluetooth on / off
Device discovery
RFCOMM Server and Client sockets
Automatic RFCOMM channel lookup and SDP record advertisement via SDP UUID
Supports most RFCOMM use-cases, including peer-to-peer communication and gaming
See http://developer.android.com/reference/android/bluetooth/package-summary.html for the latest javadoc.
Platform features
Based on Bluez 4.47 with Linux Kernel 2.6.29
Bluetooth 2.1+EDR host stack
Support for auto-pairing with '0000' devices
Support for Secure Simple Pairing
Headset Profile 1.1 in Audio Gateway role
Handsfree Profile 1.5 in Audio Gateway role
Three way calling
Phonebook over AT commands
Volume synchronization
eSCO
Bug fixes and compatibility improvements
Stereo Bluetooth (A2DP 1.2) in Source role
AVDTP 1.2 in Acceptor and Initiator roles
GAVDTP 1.0 in Acceptor and Initiator roles
44.1 khz, stereo, software SBC codec
Remote Control (AVRCP 1.0) in Target role
AVCTP 1.3 in Target role
play/pause/stop/prev/next
Object Exchange Protocol (OBEX 1.1)
Object Push Profile (OPP 1.0)
Push Client and Push Server roles
Phone Book Access Profile (PBAP 1.0)
Phone Book Server Equipment (PSE) role
Example products
Motorola Droid
Android 1.5 & 1.6 release (cupcake / donut)
Platform features
Based on Bluez 3.36 with Linux Kernel 2.6.27
Bluetooth 2.0+EDR host stack
Support for auto-pairing with '0000' devices
Headset Profile 1.1 in Audio Gateway role
Handsfree Profile 1.5 in Audio Gateway role
Three way calling
Phonebook over AT commands
Volume synchronization
eSCO
Extensive bug fixes and compatability improvements
Stereo Bluetooth (A2DP 1.2) in Source role
AVDTP 1.2 in Acceptor and Initiator roles
GAVDTP 1.0 in Acceptor and Initiator roles
44.1 khz, stereo, software SBC codec
Remote Control (AVRCP 1.0) in Target role
AVCTP 1.3 in Target role
play/pause/stop/prev/next
Qualifications
QDID B015261: Host stack (SDP, L2CAP, GAP, RFCOMM, SPP, AVCTP, AVRCP, GAVDP, AVDTP, A2DP)
QDID B015262: EPL for HTC Sapphire (HSP, HFP)
Android 1.0 & 1.1 release
Platform features
Based on Bluez 3.36 and Linux Kernel 2.6.25
Bluetooth 2.0+EDR host stack
Headset Profile 1.0 in Audio Gateway role
Handsfree Profile 1.5 in Audio Gateway role
Three way calling
Phonebook over AT commands
Qualifications
QDID B014524: Host stack (SDP, L2CAP, GAP, RFCOMM, SPP)
QDID B014624: EPL for HTC Dream (HSP, HFP)
Example products
HTC Dream / T-Mobile G1
The problem MIGHT be that these bluetooth stereo's also require OBEX, which wasn't released till 2.0.
also, when your phone does pair, what profile is it getting set to?
Like with my droid i was having a problem with some of the bt headsets only paring as handsfree. Now with my bluetooth stereo it says phone control and phone audio. So like i said, im not sure if OBEX has to do with phone control, but it would seem it would.