How to to design and test UI with audioDeviceWriter and dsp.AudioFileReader in AppDesigner for multichannel audio playback
4 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
I'm developing a user interface in AppDesigner that uses dsp.AudioFileReader and audioDeviceWriter to read and play 16-channel audio files. I don't have immediate access to the final 16-channel hardware interface and loudspeaker setup that will be used (it will use RME Madiface XT I guess with ASIO driver), but I do have example 16-channel wav files to work with.
I have the UI working well with mono files over a simple 2-channel home setup using a WASAPI driver. As soon as I've tried playing back the 16-channel files, I get the error message:
Error using audioDeviceWriter/setup
PortAudio Error: Invalid number of channels
(I've been using the setup call to initialise the audioDeviceWriter object, as per the example https://uk.mathworks.com/help/audio/ref/audiodevicewriter-system-object.html)
Is it possible to use these MATLAB objects with the 16-channel files in a limited way over a stereo device (for example, with only playing back 2 of the 16 channels), to enable development and debugging to continue, before undertaking final testing and debugging on the full 16-channel system?
What settings should I anticipate being needed to get the UI working with the 16-channel hardware that are not needed for playback of mono or stereo files - for example, device-specific settings, channel mapping etc?
2 comentarios
Mario Malic
el 5 de Oct. de 2023
deviceWriter = audioDeviceWriter('SampleRate',fileInfo.SampleRate);
info(deviceWriter)
info will tell you how many channels does the audioDeviceWriter support.
Each channel corresponds to a column of matrix you are trying to write.
Respuestas (0)
Ver también
Categorías
Más información sobre Measurements and Spatial Audio en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!