VOIP/SIP WM6 voice audio quality: setings and choppy - Windows Mobile Development and Hacking General

OK my VOIP/SIP works on WM6 and my Internal earphone works with SIP on my TyTN WM6. Thanks to the great work off that thread's contributers. I can use both the internal speaker phone and the internal earphone of my TyTN. The sound quality ,however, is another topic: mine is very choppy. I can not even judge the other quality factors.
I read a lot of SIP/VOIP postings but did not find much on improving the audio quality under WM6. Third party SIP clients most times have codec, jitter, buffer and other voice and audio adjustment possibilities. The only very technical reference I found is Windows CE Networking Team WebLog.
I can compare the audio quality of my HTC TyTN WM6 SIP with a Linksys WIP 330 WiFi phone (WM 4.2, SIP) through the same WiFi Router. ADSL at above 10 mbs and 1 mbs upload. The WIP330 sounds is a bit sharp (high hiss), but almost no chopped off sound.
Perhaps the lack of those features is why HTC left SIP support out under WM6?How is your audio quality on your device under WM6?

Same here. Using voip on Kaiser with Dutty's Touchflo ROM. Got it set up with voip.com and the call quality is lousy (choppy, jitter, etc.). It's about the same whether I use wifi or 3g. Any recommended solution for this? I know my broadband wifi connection is good since I use the softphone from my laptop over wifi with execellent results. Would trying a different codec help? If so which one and how would I set that up? Thanks.

Related

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.

Old laptop = a2dp reciever for PPC stereo?

This may be off topic for the forum, but I'm wondering if I could throw some ideas around in the hopes that perhaps someone from here has done something similar and could offer suggestions.
I've got this old IBM thinkpad attached to my stereo system which I use as a streaming media computer for my music (obsolete laptop, but good for playing internet streams or media files on my home network over the stereo).
I very often attach my pocket pc (HTC Titan) as my music player to the stereo as well, usually using a portable a2dp receiver with a 3.5" port (i.tech r35, to be exact) to stream music wirelessly.
Problem with this is that I constantly need to charge the r35 adapter because it won't charge the battery while playing music (poor design choice).
The obvious solution, since my laptop is always hooked up anyway, would be to add a bluetooth dongle to the laptop and use it at a receiver.
I tried this, but sadly WinXP does not support the A2DP profile in its native stack, and I don't have a valid license for any of the third party ones (broadcomm, Bluesoleil, etc).
Is there a simple way to support a2dp stream receiving from this laptop? An open-source bluetooth stack perhaps?
The truth is, I don't really need *windows* on there for what I use it for, I would be open to installing a linux distro if it had a2dp support built in (and wasn't too complicated to install and use... I've got very limited linux experience).
What do you guys think?
nobody has any pointers?
Wouldnt it be easier to do via wifi? Better range and higher quality than A2DP too?
i've used my wizard to stream to my laptop before with just the native bluetooth stack on the laptop
i'm sure you could just buy a bluetooth dongle and sync it via A2DP that way
Download bluesoleil, it has an A2DP server you can use to send audio from PPC to the laptop.
shandar said:
Wouldnt it be easier to do via wifi? Better range and higher quality than A2DP too?
Click to expand...
Click to collapse
Um... I'm not sure that you understood the concept here. First of all, when properly configured, a2dp is virtually indistinguishable to wired speakers when dealing with mp3 files (you lose a slight amount since it IS compressing the data, but not any more than a well encoded mp3). Second, range isn't an issue since I plan to control the music from the room I'm in (why would u want to play the music in a room far enough away that u can't hear it?).
Third, unless I haven't heard of a new Wifi audio protocol, I think what you're talking about is TOTALLY different. I stream music to my stereo from networked computers all the time, but thats not what I'm talking about here.
I use my ppc as my personal music player, and sometimes I want my playlist on the ppc to come out of the stereo system in my house. A2dp lets u do that by simply BEING IN THE SAME ROOM AS IT. I frankly don't see how WiFi would be an acceptable alternative to this since there is no audio transport support built in- its designed mostly for just networking.
I'd love to be proved wrong, so please share with me if I'm missing something here, but how would Wifi be better?
thenext1, I actually have bluesoleil, but its not registered to my device so its stuck on a 5mb trial version (5mb of info and it stops). I was thinking of something free / open source, which is why I thought about a linux option. if there is a free windows stack for A2dp, I'd love to try it...
This looks intersting I am about to try this bluesolei
What I'm looking to do is actually route calls to my laptop mic and speakers when my phone is docked in the cradle...
I'm thinking since this is the same principle that it can be accomplished?
Let me know if anyone has done this before...
it is kind of "off-topic" but i think it was relavent to post here because it deals with the same principles
surgex0 said:
This looks intersting I am about to try this bluesolei
What I'm looking to do is actually route calls to my laptop mic and speakers when my phone is docked in the cradle...
I'm thinking since this is the same principle that it can be accomplished?
Let me know if anyone has done this before...
it is kind of "off-topic" but i think it was relavent to post here because it deals with the same principles
Click to expand...
Click to collapse
It's not the same principle, A2DP is for hi-quality audio, you are trying to make the handsfree profile work.... It should work, since bluesoleil can also do that
Dishe said:
Um... I'm not sure that you understood the concept here. First of all, when properly configured, a2dp is virtually indistinguishable to wired speakers when dealing with mp3 files (you lose a slight amount since it IS compressing the data, but not any more than a well encoded mp3). Second, range isn't an issue since I plan to control the music from the room I'm in (why would u want to play the music in a room far enough away that u can't hear it?).
Third, unless I haven't heard of a new Wifi audio protocol, I think what you're talking about is TOTALLY different. I stream music to my stereo from networked computers all the time, but thats not what I'm talking about here.
I use my ppc as my personal music player, and sometimes I want my playlist on the ppc to come out of the stereo system in my house. A2dp lets u do that by simply BEING IN THE SAME ROOM AS IT. I frankly don't see how WiFi would be an acceptable alternative to this since there is no audio transport support built in- its designed mostly for just networking.
I'd love to be proved wrong, so please share with me if I'm missing something here, but how would Wifi be better?
Click to expand...
Click to collapse
Wow. You have got some aggression issues.
First of all, read through the entire post above and replace A2DP with WiFi and see what comes out. There is no advantage of using A2DP over Wifi if you have wifi on your phone. Set up a simple streaming server on your mobile then stream it over Wifi to your laptop. After the first configuration you run one application on your phone and press play in whichever media player you have on your laptop to start the music. Dead easy. Full quality, no reencoding or anything. Control the music from your PDA etc etc.
Not entirely sure what you are on about with the range? Wifi works perfectly if you're in the same room, what's A2DPs advantage? You dont have to stand 100 m from your stereo just because you're using wifi
Oh, and reencoded A2DP is _not_ indistinguishable from MP3s on normal speakers. Unless you mean laptop speakers. A2DP is a lossy encoding that is limited by the connection speed (and thus signal strength) which means that you have to be right next to the bluetooth receiver to get maximum quality. As you move away from the receiver the signal will drop, thus the speed will drop along with sound quality. Same thing happens with Wifi but the lowest connection speed over Wifi is still way beyond what you need to stream music at decent quality.
And.. ehm.. Both wifi and bluetooth are ways to transfer data, A2DP is just a protocol like FTP or HTTP. No magic there, Bluetooth and Wifi are basically the same thing but with different bandwidth and range capacities. In this case you'd use HTTP to transfer the music over Wifi instead of A2DP over Bluetooth, result is the same.
why isn't it the same principle?
my motorols HT820 headphones are A2DP and it has a microphone on them and i use it as a headset and to play music
...
BTW if you're looking for something free and linuxy why not use VLC over wifi
i'm almost positive they have a mobile client and it would def. be better than a2dp
I have to say I share the thread starter's frustration on this. Perhaps a little clarification is in order.
A2DP is far better suited to the purpose than a stream server on wifi in this case, because was simply designed to do exactly what Dishe is trying to do - connect an audio source to an audio sink without wires. Given the right software stack, all this should involve is a quick pairing procedure.
Streaming audio on the other hand, especially from a mobile device, is somewhat tedious - hacky at best, but certainly not "dead simple". You'd have to set up a stream server, probably third party and definitely not part of standard wifi installs. A audio streaming server on a mobile device could prove to be quite a resource hog as well. Attempting to this so in a time where bluetooth dongles (especially the made in china ones) that come with Bluesoleil go for next to nothing sounds like unnecessary fuss to me.
About a solution, I think picking up a cheap bluetooth dongle with Bluesoleil installed would be the most painless way to go. Linux and bluetooth don't exactly play nice from experience, but I've never actually tried to run an A2DP sink on it. You could do some reading on BlueZ, which is linux's standard stack and see if anyone else has had any luck.
Right now, A2DP sources are more common on PC stacks than A2DP sinks - people usually want to send audio out to a wireless headset or something instead of recieve audio - so google doesn't seem to be of much help. I'm currently trying to get it to work as well, and will test BlueSoleil within the week or so on a Windows computer and post back here if it works. Don't hold your breath, though.

A2DP audio quality

I was wondering if any of you who has access to this device tried to see if it also suffers from high pitched noise like other devices when used with A2DP devices?
Is this using the sandard WM bluetooth stack or have they used an improved one?
Thanks
the Bitpool could be set as high as possible, dont know why MS set the default at very low since many devices support high data streaming.
without tweaking program, average people would think bluetooth quality is poor on this device.
Lurking around for years, I would expect anyone to search and apply suggested fixes in this forum before coming to a conclusion and askind this question.
Actually, I have applied most of those settings in both polaris and diamond. Even yough it is reduced, you still notice the noise during silence. Especially id device volume is lower and receiver volume is higher. This wasn't the case in n95 and SE m600.
Similarly in Vista with built in bluetooth stack there is some noise. Using a different stack such as Widcomm produced totally different results with same receiver.
if it was good in the m600... sony ericsson...
but it's made by HTC so????
Hi all !
I'm looking around for ways to better my audio experiences in A2DP with my HTC Touch Diamond. I keep hearing these high pitched metallic noises, and based on your posts, it could be an issue with Bluetooth stack. Is it the same with Xperia ? I mean, does A2DP sucks ?
These noises are a nightmare... I am using Diamond Tweak for my Diamond, any setting ideas ? Didn't try anythng so far...
Thanks a lot !

Can anyone try A2DP?

I was wondering if the audio quality and sound stuttering has improved by using BT stereo headphones with Blackstone...
I have a trinity and i still haven't found a setting nor a rom nor a BT stack which handles my samsung headphones with a decent quality and no stuttering...
My cheap nokia 6234 has a solid connection and a good quality sound compared to the trinity... Plus, the A2DP connection slows my device down so much you have to pause if you want to do anything with it...
So if anyone could report about using bluetooth headphones with Blackstone, I would be very grateful as that would help me decide whether to buy or not
Thanks a lot
--
Fra
Great
I have the Touch HD for a few days now with the BH S100 HTC bluetooth headset. I have to say that the sound quality is great. It is even better than my conventional mp3 player.
Stable, never lost connection, etc.
Hope this helps.
I tried it today, with my Sony-headset.
It seems to stutter, though, for the five minutes I tested.
I have the Blackstone from seven day and the A2DP is OK with my Sony_Ericsson HBH-DS200.
The sound is very good and the pairing with the phone is immediatly in about 1 second.
Regards
reasonably OK with my Jabra BT620s. However, quality in BT A2DP is not really comparable with wired headsets, and i got some losses when passing nearby EM sources like wifi, etc.etc.
I needed to enhance the quality with Schaps Advanced Config Tool.
Alpine radio
I have an Alpine radio with bluetooth capabilities in my car, and for the first time I have a great connection with my HD. My Touch Diamond stuttered.
Thanks a lot everyone!
I guess it depends by the headset model and interferences then...
I'm still looking for a shop which would make me play with it for a little while...
i have a pioneer deh 700bt and the headunit set up was easier than the nokia n95
streaming music was a bit weird, the quality was very weird, kinda like very low bit rate streaming on mp3s at times, then fine again.
my n95 music used to pause when i took the key out of the ingnition and the stereo turn off
however the HD just keeps playing, but not through the speaker phone....just see it still playing
bit disappointed, and looking for a fix
I've only played for 10 mins, so i'll let you know if i find some more.
I have an Audi A3 from 2005 with a original BT carkit.
Can I use my HD to play some music ?
I can make phonecalls without a problem, if I adjust the volume of my carradio the volume from the HD is also adjusted.
But is there a possibility to play some music ?
Has anyone tried the Plantronics 855 Voyager stereo headset yet?
Also, I'm currently using the Jawbone 1 and noticed horrible interference/noise in the ear piece when the wifi is on, anyone else experience this?
I've never had any problems with the diamond and now with the hd. Like the senior man said, you need to increase the bluetooth bitpool values either in the registry or by using schaps tool. The difference in quality is immense - low values will make high bitrate music sound 64 kbps so you need to change this. Of course, the higher the bitpool the more chance of dropouts but I run at 60 and rarely, if ever have any dropouts.
Sennheiser MM200
Now if tested for almost one day my HD with my new Sennheiser MM 200. Amazing!!! The use of the MP3-Player switched with the use of the remote control to a new level. During sport display can be switched off(no need for touch display-less power consumption (try to give a more compareable info in future)), full control of play/pause/fwd/rwd/volume function. There is no delay of the HD in using the remote nor any transmission interruptings. Now the HD is with armwrest a perfect sport companion. The sound of the earphones - haven't had any better sound (and i've tried a lot of earplugs). Neckstrap fits perfect, mic in perfect position, clear speech and due to perfect noise reduction of the plugs even in noisy areas perfect understanding.
The Sennheiser was just charged the first time - i'll report the stamina.
So far -
I am using the i.Tech S35 bluetooth clip also on my HD now, and sound is very good, with WiFi on. Advantage of the clip is that one can use any headphones with it.
http://dontknowme.at/http://www.itechdynamic.com/en/products_spec.asp?cid=2&pid=02041
Louis said:
I have an Audi A3 from 2005 with a original BT carkit.
Can I use my HD to play some music ?
I can make phonecalls without a problem, if I adjust the volume of my carradio the volume from the HD is also adjusted.
But is there a possibility to play some music ?
Click to expand...
Click to collapse
no ... thats just working with A5
(is trying too much effort?)
Louis said:
I have an Audi A3 from 2005 with a original BT carkit.
Can I use my HD to play some music ?
I can make phonecalls without a problem, if I adjust the volume of my carradio the volume from the HD is also adjusted.
But is there a possibility to play some music ?
Click to expand...
Click to collapse
It's not possible to play music, only phone functions are available.
I've tested the HD with the PARROT MK6000 and everything works very fine, also A2DP, Quality is good.Phone Functions great, Phonebook synchronize works perfect

Bluetooth audio routing issues.

Hello all.
I've been having this somewhat annoying issue. I've tried a few of these bluetooth audio routers that let you use any bluetooth headset to listen to your music. I recently lost my old a2dp enabled bluetooth so I purchased a jawbone 2. The issue is that the audio routes to the jb2, but it sounds really low quality and low volume. This so far has been exactly the same with the following software: BTaudio, acbToggleBluetooth, BlueMusic, and BluetoothAudioRouter. Sucks because I just upgraded to DCD's latest rom hoping it was just an issue but wasted my time because I had to reinstall all of my cabs and have the same results lol. If anyone knows anything that could help, it would be much appreciated.
XV6800
DCD's 3.3.4 ROM
RADIO 3.42.50
I am having the same problem. Any fixes?
Nothing, I've tried every program and many bt headsets, nada.
LOL- you guys are expecting A2DP quality from the handsfree/headset profile??
It doesnt work that way. Headset profile is heavily compressed to be roughly the same quality as a phone call (since it was designed for that purpose). When bluetooth throughput was enhanced in later revisions, they created the Advanced Audio Distribution Profile (A2DP), which allows for higher fidelity sound and stereo encoding for a decent wireless music experience.
The "routing" apps just take all output from the phone's audio system, and push it out to your standard earpeice using the headset profile. There's nothing wrong with your phone or headset, what you're hearing is a limitation of the bluetooth profile. It will at best sound like on-hold music, or someone playing music for you over a phone call.
Only way to get high quality is to use the high quality A2DP profile with a compatible headset.
How do we use the A2DP Profile?
To Dishe,
My HTC Raphael supports the A2DP profile so does my headset(it works flawelessly via bluetooth on my laptop) but i can't route music to the same headset via bluetooth.
Any ideas?

Categories

Resources