Startrek A2DP: Mono

[Zone-MR]

Anyone who uses A2DP will have realised by now that the implementation in the Qtek 8500 only supports mono - the quality is good but both channels are identical.

For Dopod S300 users this ROM (http://www.howardforums.com/showthread.php?t=938699&page=1&pp=15) is rumored to fix the problem. Of course we cannot use this rom on STAR100 devices other than the S300 due to the signature and operator ID checking for ROM updates. Therefore we need a way to either set the CID to 11111111, or manually extract the relevant A2DP dlls from the dopod ROM.

Any thoughts?

[briboynyc]

Yeah I tested my bluetooth stereo headset also and it plays Mono from both earpieces. Not sure why they call it stereo when it isnt. I hope this is fixed in the next ROM or maybe there is a registry hack for it

[Zone-MR]

I tried the DLLs from the Dopod ROM - still mono :(

[datacrime]

I have a dopod S300 with A2DP working fine. I use it with the Motorola headphones.

OS:5.1.195
Radio Version: 4.1.13.14_02.26.31

[datacrime]

I have a dopod S300 with A2DP working fine. I use it with the Motorola headphones.

OS:5.1.195
Radio Version: 4.1.13.14_02.26.31

[dalamario]

To have real stereo with your bluetooth stereo headphone you have to change the following registry key:

HKLM\SOFTWARE\Microsoft\Bluetooth\A2DP\Settings
Change the UseJointStereo value 1 to 0.

The value 1 means dual mono, value 0 means stereo.

[abbot33]

[HKLM_LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings]

Modify, Value name=UseJointStereo; Value data=0 (Decimal, Originally 1)

1 - Join Stereo (Mono)
0 - Real Stereo

To improove Audio Quality modify the following keys:

Dword, Value name=BitPool; Value data=48 (Decimal)
Modify, Value Max SupportedBitPool; Value data=48 (Decimal)


For BitPool:

Microsoft suggests the following bitpool values for optimal buffer sizes.
30 - Low audio quality
40 - Medium audio quality
48 - High audio quality
58 - Excellent audio quality

Chose one you like. I think 48 is good enough.

Thanks Wiki for the info.

[Woodent]

hello everyone!

just go the qtek 8500 2 days ago and was trying to implement the a2dp fix mentioned in this thread - http://forum.xda-developers.com/viewtopic.php?t=46811&postdays=0&postorder=asc&highlight=a2dp+lag+patch&start=0 - but found to be unable to create or modify entires in the HKEY_LOCAL_MACHINE\Drivers\BuiltIn\BtA2dpSnd section. This is sad since the audio interrupts too much more often then on my qtek9100 before it was stolen :( . Does anyone have an idea as to why i cant make a modification and whether anything could be done about that?

thanks!

[porterx]

[HKLM_LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/Settings]

Modify, Value name=UseJointStereo; Value data=0 (Decimal, Originally 1)

1 - Join Stereo (Mono)
0 - Real Stereo

To improove Audio Quality modify the following keys:

Dword, Value name=BitPool; Value data=48 (Decimal)
Modify, Value Max SupportedBitPool; Value data=48 (Decimal)

For BitPool:

Microsoft suggests the following bitpool values for optimal buffer sizes.
30 - Low audio quality
40 - Medium audio quality
48 - High audio quality
58 - Excellent audio quality

Chose one you like. I think 48 is good enough.

Thanks Wiki for the info.

Can you tell me where I would do this on my 8125 phone? I use the path you stated and I don't have a setings folder. The only folder inside a2dp is devices. This is the path on my phone:

HKEY_LOCAL_MACHINE/Software/Microsoft/Bluetooth/A2DP/DEVICES

Thanks

[liangmike]

now I can listen to the stereo music from my startrek.
but the sound quality is still not so good, even after I did what the above said,
is there any good way to solve that?
thanks