Develop Bugs

stereo bt but mono sound

iam currently using latest rom from dopod and motorola 820, although the two earpiece have sounds it is only mono, can someone help to make it stereo? o recomend what rom to use, thanks

In order to have stereo audio on a Bluetooth device, you need a profile called A2DP, which is currently only supported by the latest Qtek Universal ROM at the moment:
ftp://xda:[email protected]_Updates/UNI_QTEK_13077_176_10900_WWE.exe
Dopod has not released a ROM supporting A2DP yet.

thanks for the help, God bless

No problem. Do let us know whether it works well or not.

it works, i have stereo sound, but need improvements, in a song the bluetoth stops 3 to 4 times when playing, the player dont stop its the motorola 820 that stops several times.

I did come across a post with a patch for the A2DP flaw the other day. It's somewhere on this site - do a search and see if you're lucky.

Found it: http://forum.xda-developers.com/viewtopic.php?t=46811&highlight=universal+a2dp
It worked for me for a little while so try it.

Hi,
I have used A2DP a lot with my JasJar the last 4-5 months, and had written a summary of my experiences with this "lag/stuttering"-issue in another thread here...I have copied the most essential of that text below...might be usefull info for you;
-----------------------------------------------------------------------------------
It seems to be two major factors affecting this "stuttering"/"lag" (from my experiences at least...I have used A2DP a lot with my Universal...couple of hours every day);
1. Universal struggling outputting(RAM/CPU...or both!?)
One help here is to apply the registry "A2DP priority" fix (found it in the forums here...and so did richardlai).
Another is to close all programs before using it (I usually do not do this...I usually only do it in hindsight when I get the problem).
2. Signal between Universal and headset struggling (obstructions between Universal and headset, WiFi nearby, so forth)
I for example get this problem if I put my Universal in my trouser pocket (I know, I must have big pockets, and walk around, I get stuttering/lag occationally. If I then take it out, and hold it in my hand farily still when I walk...no stuttering. I have found, that when I walk, it is Ok to have it in my backpack/rugsack...then for some reason it very rearly stutters...so I usually do that.
But when I walk of the bus at work, and walk into the "campus" of my workplace, which is cramped with radiotransmitters (is norways largest Telecom company)...I get a lot of stuttering, and need to take it out of backpack, and hold it in my hand, at it gets a lot better.
In short: A2DP with the Universal works, but is sensitive to disturbance/obstructions/moving around...and to make it worse, it is also sometimes dependant of the Universal itself struggling with CPU/RAM. So you can not totally get rid of the problem...but you can do a lot to minimize it...I almost never experience it now...except in the campus-area at work that is.
I have BTW had the exact same problems before with Qtek 2020 and Qtek9090 (which I got hold of some "A2DP patches", when I had those devices). ...but I really had a LOT more stuttering with those two...so much so, that I never used A2DP with them on a daily basis.
-----------------------------------------------------------------------------------
I also wrote a short post on my experiences with the different stereo headsets I have...yes, they actually act a little bit different it seems (regarding resume/pause button, and how easy/automatic they "reconnect"). You can see it here; http://forum.xda-developers.com/viewtopic.php?t=47977
Hope this is of some help for you!

RonnyGydar: I came across your little summary a little while ago and have done the registry fix, but the problem still exists! Do you think altering the value in some way would help?

richardlai,
I added the registry value manually...found a reg-file (or was it a CAB-file!?) that supposedly should add it...but when I checked later the key was still not added in the registry?
So I added it manually.
BUT, I do still have the problem...but that seems to be radio interference/distance so forth...since when I hold JasJar in my hand and don't move it around, I NEVER have an problem. ...and actually fairly rearly when I have it in my rugsack/backpack.
With 1 or 2 exceptions...where it lagged "all the time"...but then a soft-reset cured it.
So if you have this problem with your phone lying in front of you on the table...then it really sounds like it is the JasJar/Universal that IS the cause (and not interference)...and yes then the registry hack should help.
BUT I have not done any real testing of the effect of it...I am not sure how much effect it really has...all I know is that I had a "lot of problems" with lag before...and now I almost never have it.
...I hate those "diffuse" problems...when it is impossible to measure in a "scientific" way that "this cures it", and "this do not"! :-(
Sorry about the "little help" I give here...but this issue is a bit "fuzzy"...I have gotten it enough under control to that it isn't a problem any more (during a 1 hour workout, I will typically get this gap/lag 0-2 times...and that is not a problem for me...at least compared to what I experienced 6 months ago, where I was lucky if I could hear 10 seconds without any problems).

The stuttering problem seems to be permanent now... Luckily I have a HP hx4700 (which has a Broadcom bluetooth module) and works perfectly with my Jabra HT620s. Anyone using an A2DP ROM other than Qtek? I'd like to try a different ROM to see if it would make a difference.

only a second of sound
i use the qstarz bt stereo headset (http://www.qstarz.com/products/bh-q392s.aspx) and it works fine for phonecalls, but when i set it for wireless stereo and start a media player (TCPMP, WMP, Pocket Player...) i mostly only get sound for one second and then it shuts up. the players keep playing, the buttons on the headset can pause, resume and change tracks but there is no sound at all.
i get full wireless stereo playback occasionally, but i can't figure out what differs from time to time.
i applied the above patch with no success. anyone has a thought on the matter?
Ariel.

richardlai said:
The stuttering problem seems to be permanent now... Luckily I have a HP hx4700 (which has a Broadcom bluetooth module) and works perfectly with my Jabra HT620s. Anyone using an A2DP ROM other than Qtek? I'd like to try a different ROM to see if it would make a difference.
Click to expand...
Click to collapse
I use the BT620s with my Qtek 9000 without much trouble. Here's the trick:
Assuming you have paired with succes. Set headset and BT OFF before starting.
Turn bluetooth ON
wait a second or two
Turn headset ON
wait another two seconds
Now go to BT settings, and connect the headset.
Wait for the little pling sound (the activesync sound ).
Now start Windows Media Player and play an MP3.
Using this sequence has never failed me
edit:
I use the latest OFFICIAL Qtek 9000 WWE ROM. (Without the ExtROM though ) And i did not use any patches regarding A2DP or Bluetooth.

this is what i tried, many times. i get the activesync sound, sometimes from the speakers, sometimes in the headset, but almost always only one second of sound afterwards.
i found that by pairing the headset to the universal by pressing and holding the green button on the headset untill the universal recognises (doesn't take long) gives better results.
pairing it by the instructions of the headset (putting it in discover mode, and then searching for a device with the universal) will give me the one second sound almost every time.

Biffert said:
I use the BT620s with my Qtek 9000 without much trouble. Here's the trick:
Assuming you have paired with succes. Set headset and BT OFF before starting.
Turn bluetooth ON
wait a second or two
Turn headset ON
wait another two seconds
Now go to BT settings, and connect the headset.
Wait for the little pling sound (the activesync sound ).
Now start Windows Media Player and play an MP3.
Using this sequence has never failed me
Click to expand...
Click to collapse
Well, this has ALWAYS been the sequence I use (and I don't think you can do it in any other way). The real problem here is either the buffer memory or processor load.

richardlai said:
Biffert said:
I use the BT620s with my Qtek 9000 without much trouble. Here's the trick:
Assuming you have paired with succes. Set headset and BT OFF before starting.
Turn bluetooth ON
wait a second or two
Turn headset ON
wait another two seconds
Now go to BT settings, and connect the headset.
Wait for the little pling sound (the activesync sound ).
Now start Windows Media Player and play an MP3.
Using this sequence has never failed me
Click to expand...
Click to collapse
Well, this has ALWAYS been the sequence I use (and I don't think you can do it in any other way). The real problem here is either the buffer memory or processor load.
Click to expand...
Click to collapse
Then there is no A2DP problem, the only solution is to lower the overal systemload. Stop all programs you have running, disable every today plugin that need frequent updating (memory, battery meters etc.) Free up as much RAM as you possibly can. I have AT LEAST 16 mb RAM free when playing music via BT.

Streaming audio to car stereo via bluetooth?

Hi, I'm a first time poster and I'm on the verge of pulling my hair out.
I have an SPV M600 and have just bought a Pioneer DEH P75BT car stereo because of its bluetooth capabilities.
It has two bluetooth modes: Telephone and BT Audio. After a lot of playing around I have managed to get both modes working together....ish!!!
I've installed the A2DP hack from this site enabling the streaming audio which actually sounds fantastic through the car speakers.
The problem is that to get the BT Audio to work I have to delete and repair the phone with the stereo every time I get in the car. This involves the following actions:
Open Comm Manager
Tap settings
Tap bluetooth settings
Tap devices
Tap and hold the Pioneer BT unit
Tap delete
Tap yes to confirm deletion
Tap new partnership
Wait for scanning to complete
Tap the Pioneer BT unit
Tap next
Enter passkey (four taps)
Tap next
Tap finish
As you can imagine, this process is a real pain in the backside every time I get in the car so my question is this.
Can the above actions be automated in just one command? If so how? (bearing in mind I do not really know how to write scripts)
If someone could even point me in the direction of learning to write a script for this I would be grateful. I have downloaded and installed MortScript but I don't really know what I'm doing with it.
Why when you tap and hold the device doesn't the "set as wireless stereo" command work the same as when the stereo and phone are newly paired? Surely it's the same command.
Any help would be gratefully received.

Can't help you except to say that I experienced the same with a pioneer BT radio too. My soolution was to return it to the store and buy myself a parrot BT car kit which works just fine...

JRH said:
Can't help you except to say that I experienced the same with a pioneer BT radio too. My soolution was to return it to the store and buy myself a parrot BT car kit which works just fine...
Click to expand...
Click to collapse
Luckily I don't give up this easily. I have played around with and taught myself the basics of mortscript and have managed to write myself a script that does all of the above in one command. It's not quite perfect yet but it does mean that I can get in my car and start driving whilst the phone is busy pairing itself with the stereo.
The problems I am having so far are as follows:
I have to soft reset the phone each time before pairing with the stereo, otherwise the audio only seems to be transmitted to the front left speaker in my car, which is a bit strange.
I am forcing mortscript to try to pair with the first device in the list of detected devices, which is fine if there's no-one alse with a bluetooth device in the vicinity but not if there is and it detects theirs before mine.
Does anyone know if I could get mortscript to select a detected device by it's name "Pioneer BT unit" rather than selecting the device by simulating a tap on the screen? Also, if the device called "Pioneer BT unit" is not found the first time, scan for bluetooth devices again.
Any help would be much appreciated.

Hello I had the same problem: erase, new, etc.
but i have discovered one thing: you must only change de name in the bt description of your hands free

neomagik said:
Luckily I don't give up this easily. I have played around with and taught myself the basics of mortscript and have managed to write myself a script that does all of the above in one command. It's not quite perfect yet but it does mean that I can get in my car and start driving whilst the phone is busy pairing itself with the stereo.
The problems I am having so far are as follows:
I have to soft reset the phone each time before pairing with the stereo, otherwise the audio only seems to be transmitted to the front left speaker in my car, which is a bit strange.
I am forcing mortscript to try to pair with the first device in the list of detected devices, which is fine if there's no-one alse with a bluetooth device in the vicinity but not if there is and it detects theirs before mine.
Does anyone know if I could get mortscript to select a detected device by it's name "Pioneer BT unit" rather than selecting the device by simulating a tap on the screen? Also, if the device called "Pioneer BT unit" is not found the first time, scan for bluetooth devices again.
Any help would be much appreciated.
Click to expand...
Click to collapse
I was just about to point this fella in your direction ...
You'd have to do an indefinite loop while checking a registry value to see if your stereo was found. There is a key, i'm sure, for a list of found devices but I don't know where that is. As for detecting your car stereo as the one to pair with; depends on what keys are saved, sounds like it may just be possible.
I'll have a look into this as I'd like to get this stereo also if it can connect & stream automatically

If returning it is still an option, I'd get the Sony Bluetooth Audio headunit. Works great for listening to audio from your phone. It pairs it automatically. I also use Jawbone headset for talking on the phone. It kicks off the stereo and goes to the headset when a call comes in.
The built in mic is in the headunit and in my loud car, its subpar in quality. Whicj is why I use the excellent Jawbone.

I personally own a Peekton 950 car stereo and it works great with my wm5 (a2dp enabled) and my new WM6. the only thing that it does not do is autodiscover and connect the A2DP while it does it for the headset profile.
one other thing I would enjoy is to have the idtag displayed while getting the A2dp but I guess this is not part of the spec.

As I wrote in this topic, I guess the A2DP profile has two way of linking.
1°) The "headset" way : a bluetooth A2DP headset initiates communication to the music player/WM device.
2°) The "passive" way : The speaker just waits for a known bluetooth audio player to connect/link to it.
What surprises me is the fact you need to unpair-repair your device everytime : have you tried what I explain in the previous topic : just go to bluetooth devices , long tap on your spearker's name and choose "use as bluetooth speaker" (may not be exact name of the option since I've a French phone ).
On my phone, this simple (but annoying enough) action connects my phone to my bluetooth speaker (not an in-car one).
Hope this helps
PS : If you find any way to script/automatize the connection or any app more convenient than opeining the bluetooth setting, I'd be very pleased to be informed

This probably wont help the OP's problem, but for the rest, this freeware is brilliant, and can be automated using command line switches to work via mapped keys.
http://www.teksoftco.com/index.php?section=freeware
Surur

Many thanks for this piece of software Susur. I tried it, but I didn't manage to use it to initiate connection to my bluetooth a2dp speaker.
It's a very usefull software when your device is connected to an A2DP speaker/headphone.

There is a DIY option bluetooth headset acting as audio receiver.
http://www.grynx.com/projects/bluetooth-stereo-in-the-car/5/

Having problems with A2DP? I can help.

A couple nights ago, I was intent on getting my A2DP to work perfectly. I wanted clear, crisp, skip free music coming from my phone. Using this method, I have done just that. I'm not 100% sure all of the steps I'm including are necessary, but I've done this twice and it worked perfectly both times. Here goes!
Short way, But I'm not 100% sure it will work as well
1. Navigate to "LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings" in the registry.
2. Set BitPool to 48, MaxSupportedBitPool to 56, and Use Joint Stereo to 0.
3. Exit, soft reset
4. Tell me if it works well for you or not...
Long but guaranteed way
1. Download HTweakC, install
2. Go to bluetooth tweaks, set audio quality as "Excellent"
3. Install Sleuth255's A2DP Fix cab then soft reset
[By this point, the A2DP is crackly and may skip...so continue]
4. With the registry editor of your choice, navigate to the following:
LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings
5. Change the value of "Bitpool" to 56
6. Change the value of MaxsupportedBitPool to 56
7. Change "Use Joint Stereo" to 1
8. Soft Reset
9. Uninstall Slueth's A2DP fix
10. Soft Reset
11. Once again, open HTweakC
12. Change the A2DP quality to "High"
13. Soft reset
14. Enjoy crystal clear, skip free streaming music.
Also, if anyone can help me with an issue I've been having...Is there a quick way to set a pair of bluetooth headphones to automatically set itself as as wireless stereo without applying it each time in bluetooth options? I have a pair of BT620's if that makes any difference.
And
Is there a way to have WMP startup with my storage card's library by default? If not, is there a way to delete the library from My device?
Thanks! Hope this helps!

Has this technique eliminated the hissing aswell dude?
(No A2DP hardware to test sorry )

I have now done exactly as the "long" way said, and it did not take away the hizzing sound, (not with my plantronics pulsar 260 anyway)
so it is back to the drawing board!
thanks for sharing this Centurion, it is always nice to hear success stories..
but I would believe that the last step is the only one neccessary (htweakC)
too bad it didn't work for me.

The hissing on mine is definitely gone...I wish I could share it with you.

Hi, I just got my X01HT last week. May I ask which Windows Media/MP3 player program are you using to listen with stereo bluetooth?? I can't find the function in Windows media Player.
Thank you very much!

Hi, Pingubest
You can not use the function of stereo bluetooth on the default OS of X01HT.
In this case, you must apply cab files for the A2DP function or install WM6.

Using WMP...I've tested this 3 times on my phone now after 3 different flashes and it worked each time.

Centurion said:
Short way, But I'm not 100% sure it will work as well
1. Navigate to "LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings" in the registry.
2. Set BitPool to 48, MaxSupportedBitPool to 56, and Use Joint Stereo to 0.
3. Exit, soft reset
4. Tell me if it works well for you or not...
Long but guaranteed way
1. Download HTweakC, install
2. Go to bluetooth tweaks, set audio quality as "Excellent"
3. Install Sleuth255's A2DP Fix cab then soft reset
[By this point, the A2DP is crackly and may skip...so continue]
4. With the registry editor of your choice, navigate to the following:
LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings
5. Change the value of "Bitpool" to 56
6. Change the value of MaxsupportedBitPool to 56
7. Change "Use Joint Stereo" to 1
8. Soft Reset
9. Uninstall Slueth's A2DP fix
10. Soft Reset
11. Once again, open HTweakC
12. Change the A2DP quality to "High"
13. Soft reset
14. Enjoy crystal clear, skip free streaming music.
Also, if anyone can help me with an issue I've been having...Is there a quick way to set a pair of bluetooth headphones to automatically set itself as as wireless stereo without applying it each time in bluetooth options? I have a pair of BT620's if that makes any difference.
QUOTE]
I don't see any logic for the steps 9-14?? Maby you soft reset to quickly or didn't save registry values properly. I usually wait a little the use the powerbutton to close down phone.
Step 5-6 I set to 52 (decimal!) and sound is great on HBH-SD970 and skipping never happens as long as there's not an object between the phone and headset. I'm running Black 2.5 on a Tytn.
Regarding the problem with the BT620, this seem to be ralated to that headset, I don't have that problem with HBH-SD970. Maby there is some firmware upgrade for your headset?
Click to expand...
Click to collapse

I think the stereo thing has to do with your headset also since my BT8010 works correctly also..

I concur Jompao, no problems with HBH-DS970's... no hiss and clicks nearly eliminated with Custel's latest 1236 build v1.2. Also sound with this latest release seems louder than the previous 968 builds. Save some battery power on my DS970's... sweet!
Cheers

A2DP
I followed the "long steps" and it doesn't work for me. I am using Samsung WEP200.

doesn't work on mt 8525. It just makes the skips worst!!!!!!

the new lwsv rom is quite intresting seen from a a2dp level, it made my headset work almost as good as widcomm stack, although with the advantages of ms stack !

a2dp
Hi just to let you know "your way" - works BUT only if you DONT remove sleuth's fix - take it out and its all miss and no hits but leave it runnin and its gr8 .
ps running Moto HT820
regards
jon

mrvanx said:
Has this technique eliminated the hissing aswell dude?
(No A2DP hardware to test sorry )
Click to expand...
Click to collapse
I have perfect stereo sound! It's all in the BT headsets you use.
I use the Nokia HS-12W and HTC BH S100 and the sound is as good as it gets. NO BACKGROUND NOISE AT ALL.
It's about matching the A2DP specs of the headsets to the M$ software, and not the other way around.
My opinion only, for what it's worth.

Can anyone explain what the values of MaxsupportedBitPool and BitPool stand for? Are they kbps or decibles or something else? I understand changing the UseJointStereo to 0 turns off Joint Stereo, but i want to know what the BitPool stands for.
I have a Motorola HT820 and can play music through it with no problems. I changed the 2 bitpool settings to 48. This definately improved the quality, but occasionally it skips (very rarely). So are these higher numbers causing too much data to stream and you get a "buffer" type pause.
Also if I convert back to Joint Stereo, will that cause 1/2 of the data stream, since its basically mono. If I could stream at 96 kbps in mono, compared to 48 kbps in stereo, I would choose the mono. Mainly because of the sounds of the high frequencies. The bass and mids sounds great.
On a side note I found that turning my phone's and windows media players volume all the way up improves the sound. I use the volume controls on the HT820 to control volume.

Ok, I didn't get very far with this fix...
I downloaded and installed HTweakC, but when I run it I get an error; HTweakC.exe "Argument out of range Exception". I am assuming that the bluetooth tweaks are in this proggy?
I also tried the shortcut way, but I don't have "LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings" in the registry.
WTF did I do wrong here??
Any ideas?
I have
Cingular 8125 Wizard
G3 CID/SIM Unlocked
Rom Version: WM5SE rev 4.0 - WM5 without stylus but style!
2.26.10.2 WWE
IPL: 3.08
SPL: 3.08

Ok, One more thing...
I just went to my vehicle to play around some more and I found that when I have the BT stereo playing and a call comes in, the stereo is paused until the call is done and when it starts back up I either have no sound at all or it's skipping badly, but I went to the bluetooth device settings and held the click for the sub menu and then selected Set as wireless stereo, the audio straightened out and started playing fine again.
Could this mean the processor is too slow in the Wizard? Maybe if I overclocked it a bit that might help or am I just doomed to never have this work correctly?
Thanks again!

Can NO ONE answer my question above?
It looks like this thread is dead??
I really want to solve this audio skipping problem if posible!
Thanks
ITAdmin

Centurion said:
Short way, But I'm not 100% sure it will work as well
1. Navigate to "LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings" in the registry.
2. Set BitPool to 48, MaxSupportedBitPool to 56, and Use Joint Stereo to 0.
3. Exit, soft reset
4. Tell me if it works well for you or not...
Click to expand...
Click to collapse
Magic!!!!
I have been battling with this for weeks. Finally something that works.
Many thanks for sharing that.

Bluetooth visibility automatically switched off

Hi. I've playing for several days with my new trinity and have installed AX3L 2.0.7.0. So far i'm pretty happy with it, apart from a couple of problems:
I cannot get wireless stereo to work. I can connect the pda to my car's stereo, it identifies the HTC as a bluetooth audio device but after a few seconds, it disconnects. If I start playing something while in Wireless Stereo connection, it plays it through the pda's internal speaker.
I can't figure out how to leave Bluetooth's "Make this device visible to other devices" on. I have switched it on a dozen times and a dozen times it has been disabled. I'm not sure if it is disabled whenever I turn bluetooth off or after a certain amount of time. The fact is that it becomes disabled.
I think my last problem has already been covered here, MMS. I've seen a couple of notifications about a MMS being downloaded but there's no MMS in the inbox, i guess there's something blocking it, but that's what worries me least.
Great job, AX3L!

javierin79 said:
Hi. I've playing for several days with my new trinity and have installed AX3L 2.0.7.0. So far i'm pretty happy with it, apart from a couple of problems:
I cannot get wireless stereo to work. I can connect the pda to my car's stereo, it identifies the HTC as a bluetooth audio device but after a few seconds, it disconnects. If I start playing something while in Wireless Stereo connection, it plays it through the pda's internal speaker.
I can't figure out how to leave Bluetooth's "Make this device visible to other devices" on. I have switched it on a dozen times and a dozen times it has been disabled. I'm not sure if it is disabled whenever I turn bluetooth off or after a certain amount of time. The fact is that it becomes disabled.
I think my last problem has already been covered here, MMS. I've seen a couple of notifications about a MMS being downloaded but there's no MMS in the inbox, i guess there's something blocking it, but that's what worries me least.
Great job, AX3L!
Click to expand...
Click to collapse
First, try to install my new rom (2.0.8)....i have cleaned the registry and added some tweaks....maybe bluetooth become working (for you!)...
If not, try to edit the setting using "TweakUI"'s AD2P tab (Settings -> System)

I'll give it a shot this weekend, when i can backup my data so nothing gets lost. (BTW, where is the backup device I used to have with activesync with my old ipaq3970?)
I have searched around to find documentation to understand TweakUI AD2P settings, but i didn't see it around. Any clue whether Joint Stereo Should be enabled, meaning of Bitpool, Audio Gateway numbers?

Try to:
REMOVE the following values from the registry at HKLM\Software\Microsoft\Bluetooth\A2DP\Settings if they are present:
- BitPool
- MaxSupportedBitPool
ADD the following value to the registry at HKLM\Software\Microsoft\Bluetooth\A2DP\Settings:
Name: SampleRate
Value (DWORD): 48000 (decimal)
SoftReset the device and try again

ONLY IN CASE not working....
install the Sleuth255's Patch http://forum.xda-developers.com/attachment.php?attachmentid=31755&d=1165092579
(after install, softreset your device)

Thanks, that did the trick of bluetooth visibility not auto-turning off. Anyhow, it seems there is some kind of incompatibility between Pioneer DEH-P75BT (my car receiver) and the HTC. As a hands free, I have to manually set it from the pda as Hands free so they pair each other, and BT Audio function connects as before, but sound is still played through pda's speaker.
Thanks for the tip, AX3L

Tweaking Bluetooth Stereo settings?

Wololo,
I tried pairing up my Sony DS-980 stereo bluetooth headset with my Touch Pro 2. That worked flawlessly. I find the new bluetooth interface to be quite good. It has lots of fancy settings in a nice GUI.
BUT
When listening to music, the sound through my headset isn't very good. It sounds compressed and.. mediocre. I know it's not the headset, as it worked fine on my HTC P4350 (after some tweaking in the bitpool, that is).
I used to use Advanced Config for tweaking the bluetooth stereo settings. Apparently our Pro2 uses a new bluetooth stack which is not (yet) configurable through that program. I then tried searching for ways to edit the equivalent of the bitpool for our tp2's widcomm bluetooth stack. An old thread on xda stated 'Line Speed' to be the new 'bitpool' name. But that string is not in my registry. I might try adding it, but I doubt if that will work.
I also found 'Baudrate' as a candidate. but it's set to 4.000.000. That's quite high, in my idea.
Before I mess up my registry with 'playing around', does anyone know what else I can try? And am I the only one experiencing poor sound quality through stereo bluetooth?
Thanks!

Hi,
BT Stack on Rhodium is from Widcomm.
You can find the config in
HKLM\Software\Widcomm
I have not dug through to find ASDP settings, no time at the moment.
Please post back if you find it or not so that I can add them to the tweaks sticky.
Not sure if you have tried this or not, but with my car kit (which support HFP, A2DP and AVRCP I have to activate Stereo Audio on the Rhodium in BT Config, perhaps your headset behaves the same. If I do not audio is ****.
Cheers,
Beasty

OK, I think I got it. The Linespeed value does indeed seem to have an effect. I used this wiki as a guide:
http://wiki.xda-developers.com/inde...h your stereo Bluetooth headphones? Read this!
I used Resco Explorer Registry add-in to add the following DWORD value:
HKLM\Software\WIDCOMM\Plugin\AV\LineSpeed with a value of 320
That seems to do the trick. I'll test it for a bit, but I'm not experiencing drop-outs as of yet and my music sounds much better.
PS I first tried hacking around in the HKLM\Software\WIDCOMM\BTConfig\SerialTransport; increasing baudrate/bytesize values. Don't. Changing stuff breaks the bluetooth

yesterday i tested the a2dp range and it auto reduced quality the further i went. Unfortunately it did not vice-versa.
I'm going to test that reg.
EDIT: Definitely that reg works but it also makes the cpu use heavier and you notice that while using gps software on the car and streaming music. The 528mhz cpu is not powerful enough for this task. After some testing the value is like kb/s, so 272 is the usual for good quality, above that it takes allot of cpu. At the end i removed the reg because the device does the auto quality/cpu usage quite well. The quality is not quite the same has with a fixed value of 272 but barely worst.

Yeah, I noticed the same thing with the distance and quality, which kind of sucks as over time if the signal weakens for what ever reason (which will likely happen over an extended period of time) the audio quality gets worse and worse over time.
Also I have noticed that Audio controls don't seem to work on the TP2 with my BT stereo headphones (Sony DR-BT21G) and seem to play at max volume all the time. Not sure if this is something you guys have noticed as well or if it is specific to my head phones, though they have worked fine with other devices.

if you google it you will find ppl with dell and hp pda that uses/installed widcomm/broadcom stack and "unfortunately" it's a feature. The volume is controlled only by the a2dp receiver.
The linespeed does work but try and use wifi and a2dp at the same time You will get so much skipping :S My best experience is without that reg. Not the best quality but.. You will live with it.
Also it does adjust the "quality" itself. Lowers and uppers. It's just not instant.

anyone figure out the reg settings so it will force the call to use ringtone?