[Bluez-users] Periodic noise on microphone with bt_sco (BTA-6030 Dongle, Motorola H500 Headset)

[Dirk Stockmann <dirk.stockmann@web.de>]

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Hi,

I have successfully compiled and installed the newest bt_sco driver and
userspace programs on SuSE 10.0 (2.6.13 Kernel). And basically it works
great: playback is fine and also the microphone is working.
The problem is that the sound coming from the microphone is overlayed
with a annoying buzz. The buzz is not very loud but clearly hearable and
quite distracting.
The base frequency of the buzz is about 266Hz. If that helps I could
post a short recorded sample.
I would be very grateful to get pointers what to do to get rid of that
buzz. I am a experienced programmer with some low-level kernel
knowledge, so I would also invest some time in debugging if I would knew
for what I should look.

Thanks,
Dirk
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