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* [Bluez-users] Headsetd, skype and bluetooth headsets.
@ 2007-03-08  8:05 Alan Conway
  2007-03-08 20:25 ` Gerhard Killesreiter
  2007-03-09  3:01 ` Alan Conway
  0 siblings, 2 replies; 4+ messages in thread
From: Alan Conway @ 2007-03-08  8:05 UTC (permalink / raw)
  To: bluez-users

[-- Attachment #1: Type: text/plain, Size: 1257 bytes --]

Trying to get a plantronics 510s headset working with skype (among other 
things) and I'm tantalizingly close. Hopefully someone can help close 
the gap.

I go the headset working for input and output with headsetd and headset 
plug-in: aplay and arecord -D headset working A-OK - my .asoundrc 
attached. Then I tried aoss skype - it *almost* worked. I could hear OK 
thru the headset but my voice was weirdly distorted and unrecognizable. 
I decided to recompile off the CVS head and now nothing works I get
  ALSA lib pcm_sco.c:532:(_snd_pcm_sco_open) Unknown field max_periods

Probably I have some mish-mash of versions installed, it's too late at 
night.

So what I'd like to know to speed my quest tomorrow:
 * In CVS there are multiple headsetd and alsa-plugins under plugz, 
btsco and alsa-plugin-sco. Which is the right one?
 * Maybe the distortion indicates some transformation of sound formats 
is needed - any hints as to what it might be?
 * Is there a better way than aoss for skype? It only shows alsa 
hardware devices in it's menus, I haven't found a way to make it use a PCM.
 * Any other  tips on what might be going wrong, or better ways to 
approach this?

I'll be happy to post my solution to the list if that's useful.

Thanks,
Alan.

[-- Attachment #2: .asoundrc --]
[-- Type: text/plain, Size: 1106 bytes --]

pcm.headset {
	type plug;
	slave.pcm "hw_headset";
}

pcm.hw_headset {
	@args [BDADDR TIMEOUT MAX_PERIODS]
	
	# The Bluetooth device address for target headset, used for Audio Gateway (PC) initiated connections
        # Please note that this value is ignored when the connection is Headset initiated
	@args.BDADDR {
		type string
		default "00:03:89:95:9C:83" # Put your HS address here
	}

	# This value represents how long we will try to reach the headset, until we give up.
	# Value is in milliseconds
	@args.TIMEOUT {
		type integer
		default 6000
	}

	# 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
	}

	type        sco
	bdaddr      $BDADDR
	timeout     $TIMEOUT
	max_periods $MAX_PERIODS
}

ctl.headset {
	type sco
}

pcm.a2dpd {
        type a2dpd
}

# Use headset via aoss emulation for skype.

pcm.dsp0 {
   type plug
   slave.pcm "hw_headset"      
}

[-- Attachment #3: Type: text/plain, Size: 345 bytes --]

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^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [Bluez-users] Headsetd, skype and bluetooth headsets.
@ 2007-04-26 17:41 Ma Begaj
  0 siblings, 0 replies; 4+ messages in thread
From: Ma Begaj @ 2007-04-26 17:41 UTC (permalink / raw)
  To: BlueZ users

Did you or someone else solve this problem?

I have the same problem. I applied the latest kernel patch (v4.2) with
the latest vanilla kernel 2.6.21.

I have Jabra 250v, sound is ok with aplay and arecord, hearing in
skype is ok,  but my recorded voice (echo123) is "garbled beyond
recognition".

Thanks

M.


Alan Conway wrote:

---- quote ---
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.
- 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.

My next step is to fiddle with pcm settings - I've seen .asoundrc
scripts for skype and dmix that do conversions between 8 and 16 bit
formats and other stuff I know nothing about (but am afraid I'm gonna
learn). Here are the details of how I got this far:

== DETAILS: based on btsco/docs/build.html from CVS, slightly modified.

install libsbc:

Note: When asking for a password simply press Enter.

cvs -d:pserver:anonymous <at> sbc.cvs.sourceforge.net:/cvsroot/sbc login
cvs -d:pserver:anonymous <at> sbc.cvs.sourceforge.net:/cvsroot/sbc co sbc
cd sbc
./bootstrap
./configure --prefix=/usr
make
sudo make install

install bstco:

cvs
-d:pserver:anonymous <at>
bluetooth-alsa.cvs.sourceforge.net:/cvsroot/bluetooth-alsa
login
cvs
-d:pserver:anonymous <at>
bluetooth-alsa.cvs.sourceforge.net:/cvsroot/bluetooth-alsa
co btsco
cd btsco
./bootstrap
# Note I added CFLAGS in ./configure. Without them the plugin emits
# a torrent of debug messages that slow it down and ruin the sound quality.
# -NDEBUG is essential, -03 is just for good luck.
./configure --prefix=/usr --enable-alsaplugin CFLAGS="-NDEBUG -03"
make
sudo make install

** Using from skype
My .asoundrc is copied from btsco/alsa-plugins/asound.conf with the
headset address replaced by my own and the following addition for aoss:

# Use headset via aoss emulation for skype.

pcm.dsp0 {
   type plug
   slave.pcm "hw_headset"
}

Full .asoundrc attached. Run skype as "aoss skype" (you need alsa-oss
package installed.)

== 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 <at> 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

Cheers,
Alan.

pcm.headset {
	type plug;
	slave.pcm "hw_headset";
}

pcm.hw_headset {
	 <at> args [BDADDR TIMEOUT MAX_PERIODS]
	
	# The Bluetooth device address for target headset, used for Audio
Gateway (PC) initiated connections
        # Please note that this value is ignored when the connection
is Headset initiated
	 <at> args.BDADDR {
		type string
		default "00:03:89:95:9C:83" # Put your HS address here
	}

	# This value represents how long we will try to reach the headset,
until we give up.
	# Value is in milliseconds
	 <at> args.TIMEOUT {
		type integer
		default 6000
	}

	# 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
	 <at> args.MAX_PERIODS {		
		type integer
		default 334
	}

	type        sco
	bdaddr      $BDADDR
	timeout     $TIMEOUT
	max_periods $MAX_PERIODS
}

ctl.headset {
	type sco
}

pcm.a2dpd {
        type a2dpd
}

# Use headset via aoss emulation for skype.

pcm.dsp0 {
   type plug
   slave.pcm "hw_headset"
}

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^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-04-26 17:41 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-03-08  8:05 [Bluez-users] Headsetd, skype and bluetooth headsets Alan Conway
2007-03-08 20:25 ` Gerhard Killesreiter
2007-03-09  3:01 ` Alan Conway
  -- strict thread matches above, loose matches on Subject: below --
2007-04-26 17:41 Ma Begaj

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