Re: [Bluez-users] Plantronics 510 headset: playback partially works, but not recording

[Matt Zimmerman <mdz@ubuntu.com>]

On Mon, Mar 12, 2007 at 12:39:05PM -0400, Alan Conway wrote:
> Matt Zimmerman wrote:
> > I found an example which used aplay -B 1000000, and that fixes the
> > stuttering.  Still no luck yet on recording.
> I'm trying to get a similar setup to work, here's my previos post with 
> my status so far, would love to hear of any breakthroughs you make:

Thanks for sharing your experience.

> Trying to use a plantronics 510s with skype.
> 
> Update on my attempts, I've established the setup that almost works. By 
> almost works I mean:
> - aplay, arecord -D headset work, quality is fine for telephone use.

Interesting, so recording works for you?  I wonder what's different about
your setup.

> - aoss skype almost works: I can hear the test call clearly, I can 
> record a message but when it is played back my voice is garbled beyond 
> recognition.

I've no idea about this; I'm wanting to use Ekiga which has native ALSA
support.

> == NOTES
> 
> The instructions at http://bluetooth-alsa.sourceforge.net/build.html did 
> *not* work for me. The plugz version of the plugin requires a different 
> .asoundrc (based on plugz/asound.conf) but aplay -D headset gave me:
> 
> [aconway@scooter plugz]$ aplay -D headset /usr/share/sounds/startup3.wav
> Playing WAVE '/usr/share/sounds/startup3.wav' : Signed 16 bit Little 
> Endian, Rate 44100 Hz, Stereo
> aplay: set_params:909: Channels count non available

I believe I got the same when I tried to play a stereo stream for a test.
Since then, I've just been using mono files for testing, which works fine.

> 	# This is the size of the buffer used to queue Voice packets. Value must be between 
> 	# 2 and 334 (~ 1 second). Default value is 2 buffers, which works well most of the
>         # time, and has the advantage of giving us an ultra low delay
> 	@args.MAX_PERIODS {		
> 		type integer
> 		default 334
> 	}

Haven't experimented with this; will see if it makes a difference.

-- 
 - mdz

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