There is not really any code in the Csound PortAudio plugin that would
restrict the sample rate to 44100 Hz or higher. Does the version of
ASIO4ALL you have work at low sample rates in other applications ?
If it does, another possible problem may be the portaudio.dll that is
currently included; it is the one built by Victor Lazzarini in 2004,
perhaps the limitation existed then and was removed in later versions
of PortAudio. This could be tested by trying the ASIO-only PortAudio
DLLs from one of the Gogins beta releases.

On Wednesday 01 March 2006 03:17, Art Hunkins wrote:

> Back when Mike G. was doing ASIO-only driver interfacing for Csound5Beta, he
> got it so ASIO4ALL worked with lower SR's (20K, 11K, 8K). That is to say
> once ASIO4ALL added these rates.
> 
> The current Portaudio drivers do not seem to accomodate these lower rates;
> they only allow ASIO4ALL at 44K and higher. This ASIO limitation seems
> limited to ASIO4ALL, as an M-Audio Quattro of mine works fine with its
> native ASIO at 22K.
> 
> If ASIO4ALL can be made to work at these lower SR's in Csound5, I'd sure
> appreciate it. (BTW, I know that the lower rates *do* work with the MME and
> DirectSound portions of PortAudio.)


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