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Date:      Tue, 26 Apr 2011 22:19:43 -0300
From:      Marcel Bonnet <marcelbonnet@gmail.com>
To:        Clemens Ladisch <clemens@ladisch.de>
Cc:        freebsd-multimedia@freebsd.org
Subject:   Re: uaudio, M-Audio FastTrack Pro device - sound distorted
Message-ID:  <BANLkTin11mS8ur=8PouR0H8sFkFxiJ%2BFfQ@mail.gmail.com>
In-Reply-To: <4DB67DED.1030906@ladisch.de>
References:  <BANLkTimAZtcpe2Ba5P0qsHKiH2-G691GCQ@mail.gmail.com> <4DB67DED.1030906@ladisch.de>

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On 26 April 2011 05:10, Clemens Ladisch <clemens@ladisch.de> wrote:

> Marcel Bonnet wrote:
> > I'm using the M-AUDIO FastTrack Pro USB audio interface, but every time=
 I
> > play or record, the sound get distorted.
>
> > uaudio0: Play: 44100 Hz, 2 ch, 16-bit S-LE PCM format
> > uaudio0: Record: 48000 Hz, 2 ch, 16-bit S-LE PCM format
>
> This device uses one internal sample rate; using different rates for the
> playback and capture interfaces won't work.
>
> AFAIK there are some undocumented constraints on which configurations
> and alternate settings can be used; and in some alternate settings, the
> device uses big-endian samples.  This cannot be handled with the generic
> parts of the uaudio driver; it requires device-specific workarounds.
>
> There is an outdated patch that tries to make this device work on Linux
> on this page: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3D32=
49
>
> Thanks, I'll keep that URL for studing soon.
I was using Linux kernel 2.6.26 (debian lenny - 5.x) until last month and
the playback worked fine.


>
> Regards,
> Clemens
>



--=20
Marcel Bonnet
*"No princ=EDpio era o caos... e no meio tamb=E9m."*
www.monovox.net.br
twitter.com/mono_vox
FreeBSD inside



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