Audacity Forum

I have GoldWave v6.10. It requires 64-bit Windows. The options are DirectSound or WASAPI.

These pages explain blocking and callback in PortAudio:

http://portaudio.com/docs/v19-doxydocs/ ... lback.html

http://portaudio.com/docs/v19-doxydocs/ ... write.html

chris319 wrote:One clue: my program uses PortAudio's callback mode. Does Audacity use PortAudio's callback mode or "blocking" mode?

Audacity uses callback mode.

Leland

For testing purposes, it might be useful to install Virtual Audio Cable and have two instances of Audacity, one playing back into Virtual Audio Cable and the other recording the output of Virtual Audio Cable. V.A.C. is fairly dependable and this might eliminate some of the vagaries of dealing with hardware drivers. V.A.C. will show up as a WASAPI audio device.

A free trial version of V.A.C. is available: http://software.muzychenko.net/eng/vac.htm

chris319 wrote:For testing purposes, it might be useful to instal Virtual Audio Cable and have two instances of Audacity, one playing back into Virtual Audio Cable and the other recording the output of Virtual Audio Cable. V.A.C. is fairly dependable and this might eliminate some of the vagaries of dealing with hardware drivers. V.A.C. will show up as a WASAPI audio device.

A free trial version of V.A.C. is available: http://software.muzychenko.net/eng/vac.htm

Well, except that Audacity is designed not to run two instances together on the same computer, so you'd have to set up a workaround to that first.

Gale

Audacity is designed not to run two instances together on the same computer, so you'd have to set up a workaround to that first.

Not worth the bother.

Still, Virtual Audio Cable is a wonderful program and I find it quite useful.