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Chapter 10. Audio - NetBSD
http://www.netbsd.org/docs/guide/en/chap-audio.html
The other device, USB audio, is a secondary device that has been plugged in. Since it isn't the default, it is only used if specifically selected in an application. It is available as /dev/audio1, and for mixer commands, /dev/mixer1. The playback: and record: rows indicate the currently selected hardware audio format. Below this, the other supported formats are listed.
uaudio(4) - NetBSD Manual Pages
https://man.netbsd.org/NetBSD-9.2/uaudio.4
A USB audio device consists of a number of components: input terminals (e.g. USB digital input), output terminals (e.g. speakers), and a number of units in between (e.g. volume control). The following types of units are handled by the uaudio driver and are accessible via the mixer (see audio(4)) interface: mixer A mixer has a number of inputs and one output. Each input has a …
Chapter 13. Using removable media - NetBSD
https://www.netbsd.org/docs/guide/en/chap-rmmedia.html
Initializing and using USB flash drives. USB flash drives can be used to share data among …
NetBSD audio - an application perspective
https://netbsd.org/gallery/presentations/nia/netbsd-audio/
audio options for NetBSD in pkgsrc. Use NetBSD native audio (sun audio/audioio.h) Or OSS emulation layer Basically a wrapper around sun audio in the kernel Incomplete and old version, but works for simple stuff; Many many abstraction layers available: OpenAL-Soft; alsa-lib (config file required) libao, GStreamer (plugins!) PortAudio, SDL; PulseAudio, JACK
USB Hardware Supported by NetBSD
https://www.netbsd.org/support/hardware/usb.html
Machine-independent USB drivers. This list has been moved to a manual page - see usb (4) for a list of USB drivers. Individual device driver man pages often have a list of individual devices (including rebrands) supported by the driver. Back to Hardware Devices Supported by NetBSD.
Re: USB audio re-attach after each usage
https://mail-index.netbsd.org/port-arm/2022/02/01/msg007586.html
manu%netbsd.org@localhost (Emmanuel Dreyfus) writes: >Reducing at values between 0.5 and 1.0 reduces the odds of the USB audio >detach event. The lowr the value, the lesser it happens. At 1.0 it always >happen, and at 0.5 it seems to never happen. Sounds like the speaker resets due to low USB voltage.
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