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Old 3rd September 2016
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rons rons is offline
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Default NetBSD questions

Here's an audio question:

1) I use NetBSD for audio players (Ogg123, etc) all the time. Works great. What's the secret to getting audio capture going? I have a CMedia chipset USB Audio dongle, which I use for playing Ogg tunes. I set the audio params with something like:

audioctl -d /dev/audio1 -w play=44100,2,16,slinear_le #for play

audioctl -d /dev/audio1 -w record=44100,1,16,slinear_le #for capture
The system remembers the play settings, but forgets the capture settings.


audioctl -d /dev/audio1 -a
shows new settings in play mode, but in capture mode everything remains set to the original defaults (8k sample rate, for instance).

Last edited by rons; 10th September 2016 at 06:58 PM.
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Old 10th September 2016
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rons rons is offline
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Posts: 37

The USB audio device is:

idVendor: 0x0d8c C-Media Electronics, Inc
idProduct:0x000c Audio headset
line-input: (L-R)
line-output (L-R)
microphone input (mono)

This works very well for output on NetBSD (what most people probably really use it for), but for my app I need input as well. I posted a bug to NetBSD's Send-PR page a week or so ago, but no response has been received yet. I imagine they have other fish to fry :-) .

But, at least I've put the particulars here so that someone may eventually run across it.
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