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[Octave-bug-tracker] [bug #54668] unable to open audio recording stream


From: John Price
Subject: [Octave-bug-tracker] [bug #54668] unable to open audio recording stream
Date: Tue, 18 Sep 2018 00:32:27 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Follow-up Comment #4, bug #54668 (project octave):

Mike, thanks again for these comments. I understand about the limited
development support and am grateful for any info that can be provided. Great
idea about trying the Audiobox 96 with Audacity. It does not work and shows
similar problems as with Octave. Both Audacity and Octave work with the
internal sound hardware. So I suspect that PortAudio cannot handle this 24-bit
interface. 

When I use the internal sound hardware with Audacity, I can use DirectSound
drivers for both record and play. With Octave, the DirectSound driver works
for play, but for recording the DirectSound driver gives zeros in the data.
That could be a bug. Recording does work fine with the MME driver.

I think my next step should be to try my test code with the Audiobox and Win
10 to see if that is different. I will probably try to get some other hardware
that is a USB audio interface with XLR mic inputs but that is 16 bits rather
than 24. I suspect that might work. I am not sure if we can leave this thread
open or not, but if we can I will report results of further tests.

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