----- Original Message -----

From: Diego Saá

To: csound csound

Sent: Wednesday, October 22, 2008 6:03 AM

Subject: [Csnd] Optimizing Audio I/O Latency

Hi all,

I'm trying to optimize the Audio I/O Latency of my iMac (with the Leopard 10.5.2 OS, and a M-audio FastTrack interface).
Please, correct me if I'm wrong, but I think that the latency would improve if I use CoreAudio instead of PortAudio, right? Csound always picks PortAudio by default, which forces me to use this flag: -+rtaudio=CoreAudio. When I use PortAudio, I get signal from my mic, but for some reason, when I try to use CoreAudio, I get no signal whatsoever. Someone has any idea on why this is happening?

I'm using this simple instrument for my testing:
instr 1
a1       in
out    a1
endin

Cheers,
Diego Saá

---

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You can do this in "audio midi setup". In the Audio menu at the top  
left select "open aggregate device editor" and make your I/O  
combination.

Best
Peiman

On 22 Oct 2008, at 14:00, Andres Cabrera wrote:

> Hi Victor,
>
> How do you do this?
>
> Cheers,
> Andrés
>
> On Wed, Oct 22, 2008 at 3:19 AM, victor   
> wrote:
>> With CoreaAudio, you need to make a 'composite device' of the
>> inputs and outputs you want to use and then select that device for
>> your use.
>
>
> Send bugs reports to this list.
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