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Date:      Tue, 23 May 2023 18:37:52 +0000
From:      bugzilla-noreply@freebsd.org
To:        multimedia@FreeBSD.org
Subject:   [Bug 271559] [sound] [snd_uaudio] Creative Katana V2X garbled audio
Message-ID:  <bug-271559-12827-Ei7BKPtqV9@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-271559-12827@https.bugs.freebsd.org/bugzilla/>
References:  <bug-271559-12827@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D271559

Hans Petter Selasky <hselasky@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |hselasky@FreeBSD.org

--- Comment #9 from Hans Petter Selasky <hselasky@FreeBSD.org> ---
Hi,

uaudio1: <Creative Technology Ltd SB Katana V2X, class 239/2, rev 2.00/10.1=
0,
addr 7> on usbus5
uaudio1: Play[0]: 48000 Hz, 6 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio1: Record[0]: 48000 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.

This device use 6 channels for playback.

Try using virtual_oss from pkg / ports, to split the device into a 2 channel
dsp device.

Many applications expect stereo at most. We have some mapping code in the P=
CM
code in the kernel too, but I'm not sure if it supports all channel variant=
s.
For example when you playback stereo, those two channels are mapped to all =
the
6  other channels.

--HPS

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