Channel mapping with RawInputStream about python-sounddevice HOT 2 CLOSED

PortAudio doesn't provide a platform-independent way to select arbitrary channels. You can only specify a certain number of channels N, which means that the channels 1 to N are used.

For convenience, I added the mapping argument to play() and rec() and input_mapping/output_mapping to playrec(). However, this simply checks for the largest channel number, requests this number of channels from PortAudio and fills the unneeded output channels with zeros (and ignores the unneeded input channels). It's not ideal if you have many unneeded channels, but it gets the job done

And that's what you can do in your code using RawInputStream, too.

Having said that, PortAudio also has some platform-specific functions to select certain channels (see http://portaudio.com/docs/v19-doxydocs/group__public__header.html), but those are currently not implemented in python-sounddevice (see #4). If you think they should be implemented, please leave a comment at #4. On what platform/host API would you need that feature?

from python-sounddevice.

Selecting arbitrary channels is now possible with ASIO (see #34). If you need other platform-specific features, please comment on #4 or open a new issue.

from python-sounddevice.