Alsa and software speech

Alsa and software speech

[Zachary Kline]

Hello,
    I am dealing with a fairly annoying problem--one which seems quite complex.  How do I achieve software mixing with Alsa?  (I want to be able to play an MP3 stream and also have software speech going.)  The information I've found so far seems to center on a file named asoundrc--which I've never heard of before, and who's format is a mystery to me.
    Could anybody be so kind as to give some general information on this?  What is Dmix, for example?
Thanks,
Zack.

Re: Alsa and software speech

[Gregory Nowak]

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Dmix is a software mixer for alsa. If you're using I believe alsa 0.10
or later with a card that isn't multi-channel, dmix is used
automatically, so you don't need to do anything to activate
it. Otherwise, you can activate dmix with a $HOME/.asoundrc
file. You'll need to search the web to find out exactly what should go
in that file to activate dmix, since I got rid of my $HOME/.asoundrc
when alsa started supporting dmix by default on cards which need
it. I'm by no means an expert on this, so anything I've said here
stands to be corrected.

Greg


On Mon, May 21, 2007 at 06:30:44PM -0700, Zachary Kline wrote:
> Hello,
>     I am dealing with a fairly annoying problem--one which seems quite complex.  How do I achieve software mixing with Alsa?  (I want to be able to play an MP3 stream and also have software speech going.)  The information I've found so far seems to center on a file named asoundrc--which I've never heard of before, and who's format is a mystery to me.
>     Could anybody be so kind as to give some general information on this?  What is Dmix, for example?
> Thanks,
> Zack.
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

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Re: Alsa and software speech

[Jan Buchal]

>>>>> "ZK" == Zachary Kline <Z_kline@hotmail.com> writes:

    ZK> Hello, I am dealing with a fairly annoying problem--one which
    ZK> seems quite complex. How do I achieve software mixing with Alsa?
    ZK> (I want to be able to play an MP3 stream and also have software
    ZK> speech going.) The information I've found so far seems to center
    ZK> on a file named asoundrc--which I've never heard of before, and
    ZK> who's format is a mystery to me. Could anybody be so kind as to
    ZK> give some general information on this? What is Dmix, for
    ZK> example?

Hi,

if you will use latest alsa then you don't need set up dmix. alsa use it
automaticaly. Only you must be carrrefuly if you have on your system
.asoundrc which is not compatible with a new version of alsa but if you
have a new linux installation then will be OK.


For playing you need alsa clients or for oss client you can install
alsa-oss on debian for example. Then you can play with command: aoss
playcommand FILE .

Best

-- 

Jan Buchal
Tel: (00420) 24 24 86 008
Mob: (00420) 608023021