Hi Jonathan,

I just noticed from your other email:

       pcm.ali5451 {
          type hw
          card 0
       }

       ctl.ali5451 {
          type hw
          card 0
       }

If this is the card you are testing with, I took a look at the ALSA
soundcard matrix page and it lists the ALI5451 as supporting Hardware
Mixing, which is not the case for Jean or myself. I'm assuming that is
the difference between what you are finding and what we are finding.

steven


On 1/18/07, Jonathan Murphy <typetosmurky@bigpond.com> wrote:
> Hi Steven,
>
> > For my computer, dmix routes to whatever device happens to be assigned
> > hw0:0 first. Sometimes that's the USB device and sometimes that the
> > onboard soundcard.  If I don't explicitly assign it to the hardware
> > number of the USB device, I can't get predictable results.
>
> Sorry, now I understand your situation. However, with regard to the
> OLPC project, as there is only one soundcard, would it not be best to
> just create the alias? Dmix will be enabled by default for the card,
> and using that setup the problems that Jean described are not arising
> for me.
>
> > What settings are you using for your testing with Csound?  (-b, -B,
> > sr, -o)
>
> Here is the .csd that I am using, the settings are all in the
> CsOptions, I'm just opening up several xterms and running "csound
> olpc.csd", "aplay foo41.wav", "aplay foo48.wav" and so on.
>
> <CsoundSynthesizer>
> <CsOptions>
> -+rtaudio=alsa -odac -d -m0 -b512 -B1024
> </CsOptions>
>
> <CsInstruments>
>
>   sr        =  16000
>   ksmps     =  50
>   nchnls    =  1
>
>     instr 1
>
>   ar        oscil     10000, 440, 1
>
>             out       ar
>
>     endin
>
>  </CsInstruments>
>
> <CsScore>
> f1 0 8192 10 1
> i1 0 30
> e
> </CsScore>
> </CsoundSynthesizer>
>
> Jonathan.
>
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