[Bluez-devel] Bluetooth ALSA: a2play plays MP3s too fast

[Bluez-devel] Bluetooth ALSA: a2play plays MP3s too fast

[adi007]

Hi fellows,

after figuring out, how to set the passkey-agent for the HCI-daemon
I finally was able to connect my new SONY VGP-BRM1D bluetooth audio
headset with my Linux box and stream audio playback of mpg123 to
the headset with a2play. Here's what I did in short:

1. find headset with "hcitool scan"
2. set passkey for headset with "passkey-agent 0000 <address>"
3. connect to headset with "btsco -v -r <address>"
4. stream audio with "mpg123 --au - file.mp3 | a2play <address>"

The sound quality is just find with 44,1kHz, Stereo. But the playback
of the MP3 is just a bit too fast (high pitched) and varies with
CPU-load, i.e. getting the computer busy makes the music slow down.

I tried the various options for a2play regarding the timing stuff
(-i, -n, -p), but none helped. I also changed the value for "TICKS"
in the a2play-source (a2play.c).


Here my specs:

Kernel: Linux 2.6.19-rc5 (also 2.6.17.9)
Computer: IBM Thinkpad 240X, PIII-500, 192MB RAM
BT-Dongle: Acer Bluetooth USB
Headset: SONY VGP-BRM1D (http://www.jp.sonystyle.com/Qnavi/Detail/VGP-BRM1D=
.html).

Best Regards,

Adrian Glaubitz


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Re: [Bluez-devel] Bluetooth ALSA: a2play plays MP3s too fast

[dleo]

I am having similar issue using alsa with 
a2dpd and xmms

xmms plays the MP3 at about 5x regular speed, 
I get the audio but its just too fast.

I havent' tried a2play  but I am getting 
similar issue with a2dpd.

Anyone have any Ideas?


I am using Dell Inspiron 6000 running Fedora Core 6
kernel 2.6.18-1.2798.fc6 


I followed instructions from 
https://help.ubuntu.com/community/BluetoothAudio

Any help would be useful


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[Bluez-devel] RE : Bluetooth ALSA: a2play plays MP3s too fast

[Frederic Dalleau]

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Hi,

> xmms plays the MP3 at about 5x regular speed, 
> I get the audio but its just too fast.

can you send us some output of the daemon and the content of your .a2dprc?
Also can you upload the file you wanted to play somewhere?

Thanks,
Frederic.

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[-- Attachment #4: Type: text/plain, Size: 164 bytes --]

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[Bluez-devel] Bluetooth ALSA: a2play plays MP3s too fast

[Adrian Glaubitz]

Hi fellows,

after figuring out, how to set the passkey-agent for the HCI-daemon
I finally was able to connect my new SONY VGP-BRM1D bluetooth audio
headset with my Linux box and stream audio playback of mpg123 to
the headset with a2play. Here's what I did in short:

1. find headset with "hcitool scan"
2. set passkey for headset with "passkey-agent 0000 <address>"
3. connect to headset with "btsco -v -r <address>"
4. stream audio with "mpg123 --au - file.mp3 | a2play <address>"

The sound quality is just find with 44,1kHz, Stereo. But the playback
of the MP3 is just a bit too fast (high pitched) and varies with
CPU-load, i.e. getting the computer busy makes the music slow down.

I tried the various options for a2play regarding the timing stuff
(-i, -n, -p), but none helped. I also changed the value for "TICKS"
in the a2play-source (a2play.c).


Here my specs:

Kernel: Linux 2.6.19-rc5 (also 2.6.17.9)
Computer: IBM Thinkpad 240X, PIII-500, 192MB RAM
BT-Dongle: Acer Bluetooth USB
Headset: SONY VGP-BRM1D (http://www.jp.sonystyle.com/Qnavi/Detail/VGP-BRM1D.html).

Best Regards,

Adrian Glaubitz

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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https://lists.sourceforge.net/lists/listinfo/bluez-devel