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spatialaudio / python-sounddevice

:sound: Play and Record Sound with Python :snake:
https://python-sounddevice.readthedocs.io/
MIT License
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PortAudioError: Error opening Stream: Illegal combination of I/O devices [PaErrorCode -9993] #478

Open dzdem opened 1 year ago

dzdem commented 1 year ago

I am trying to measure the impulse response of my laptop's loudspeaker using sounddevice. I want to use my own laptop's speaker as the output device, and an external microphone array as the input device. I am using an RME sound card for the microphone array, which uses the MADIface ASIO driver. I want to get the raw audio from the laptop speakers so I am using ASIO4ALL as the driver for laptop speakers. But whenever I run my code, I get the following error:

PortAudioError: Error opening Stream: Illegal combination of I/O devices [PaErrorCode -9993]

I couldn't find anything about this specific error anywhere on the internet. Source code for sounddevice also doesn't show anything. Unfortunately I cannot share my code because of the privacy policy of the company. Can someone please explain what might be the problem here?

HaHeho commented 1 year ago

Using different hardware devices simultaneously can be a bit of a challenge, depending on the operating system. See for example https://github.com/spatialaudio/python-sounddevice/issues/465#issuecomment-1504343671 and the linked discussion https://github.com/spatialaudio/python-sounddevice/issues/338#issuecomment-867131063.