Different sound devices for mic and speakers

Mario Lobo lobo at bsd.com.br
Thu Dec 3 17:37:44 UTC 2020

On Thu, Dec 3, 2020 at 2:04 PM Per olof Ljungmark <peo at nethead.se> wrote:

> On 12/3/20 5:01 PM, Per olof Ljungmark wrote:
> > For videoconferencing I have a mic in the camera, /dev/dsp6 but the
> > speakers are on /dev/dsp4.
> >
> > How can I make this work? Tried to read the man page for device.hints
> > but that just made me dizzy. Is it really the only way to do it?
> >
> virtual_oss seems to do the job.
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Could you elaborate on how to do that with virtual_oss?

When I tried it with the default config, Firefox videos and audios froze.

Here's my sndstat:

Installed devices:
pcm0: <NVIDIA (0x0051) (HDMI/DP 8ch)> (play)
pcm1: <NVIDIA (0x0051) (HDMI/DP 8ch)> (play)
pcm2: <Realtek ALC892 (Rear Analog 7.1/2.0)> (play/rec) default
pcm3: <Realtek ALC892 (Front Analog)> (play/rec)
pcm4: <Realtek ALC892 (Onboard Digital)> (play)
pcm5: <Realtek ALC892 (Rear Digital)> (play)
pcm6: <USB audio> (rec)   <-- camera mic /dev/dsp6.0
No devices installed from userspace.

ugen7.2: <AVEO Technology Corp. USB2.0 Camera> at usbus7
ugen3.2: <vendor 0x275d USB OPTICAL MOUSE> at usbus3
ugen3.3: <Innovace HP Wire Keyboard Kit> at usbus3

Bus /dev/usb Device /dev/ugen3.3: ID 05af:0806 Jing-Mold Enterprise Co.,
Ltd HP SK806A Keyboard
Bus /dev/usb Device /dev/ugen3.2: ID 275d:0ba6
Bus /dev/usb Device /dev/ugen7.2: ID 1871:0143 Aveo Technology Corp.
Bus /dev/usb Device /dev/ugen0.2: ID 2109:3431 VIA Labs, Inc. Hub

Mario Lobo
FreeBSD since version 2.2.8 [not Pro-Audio.... YET!!]

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