Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 29 Mar 2021 11:55:46 +0300
From:      Softwafe Engineer <timsofteng@gmail.com>
To:        Hans Petter Selasky <hps@selasky.org>
Cc:        freebsd-multimedia@freebsd.org
Subject:   Re: Distorted sound with external usb-device and bitperfect
Message-ID:  <CAP7bFfAVVO=m2=YiqL5Kc_9pEpBCnnHEGVhhHer589THdWnLSw@mail.gmail.com>
In-Reply-To: <69e199f6-a3ac-db3b-c7a1-00001f750624@selasky.org>
References:  <CAP7bFfBhoHQXV%2BzpW3Sm%2BLcJh77U=KBoZzhJ6oxCxBABx3UPwQ@mail.gmail.com> <d7d15f35-f363-44df-bf05-c2253a5307d1@selasky.org> <CAP7bFfCRBnJh5k0fe8r9AnhzTh8FBO6_r=iu9D9qrwo-PTxD6A@mail.gmail.com> <4938264f-686a-af1a-cb28-f39585b1375a@selasky.org> <CAP7bFfBAVF1NuVhXLrDMkHGnMZA=tn7taN4cxQGkwO4ogKHkCg@mail.gmail.com> <c2b50b48-f842-2509-2075-dd9d3c6e3d79@selasky.org> <CAP7bFfAQw2uJ%2Bkn7xC=Yis6iFrnh7qn%2BdbbULqARDRO-p5=bag@mail.gmail.com> <69e199f6-a3ac-db3b-c7a1-00001f750624@selasky.org>

next in thread | previous in thread | raw e-mail | index | archive | help
Thanks a lot.

What about uadriver? Maybe Motu support more formats but something wrong
with driver. Would it be true?
 I've send question about it to Motu support.

=D0=BF=D0=BD, 29 =D0=BC=D0=B0=D1=80. 2021 =D0=B3., 11:52 Hans Petter Selask=
y <hps@selasky.org>:

> On 3/29/21 10:47 AM, Softwafe Engineer wrote:
> > So I can't get true bitperfect right? I should convert signal before se=
nd
> > to card output anyway.
>
> As long as your USB audio device reports it only supports 32-bit as
> native format, then 16-bit bitperfect won't be possible.
>
> I think in Linux, ALSA automatically does audio format conversions. The
> choice is just if your application has to provide a certain format or not=
.
>
> Try to look at "top" under Linux while playing something and find who's
> doing the format conversion.
>
> --HPS
>



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAP7bFfAVVO=m2=YiqL5Kc_9pEpBCnnHEGVhhHer589THdWnLSw>