From owner-freebsd-multimedia@freebsd.org  Fri Oct 20 16:24:44 2017
Return-Path: <owner-freebsd-multimedia@freebsd.org>
Delivered-To: freebsd-multimedia@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5FCB4E3A112
 for <freebsd-multimedia@mailman.ysv.freebsd.org>;
 Fri, 20 Oct 2017 16:24:44 +0000 (UTC) (envelope-from hps@selasky.org)
Received: from mail.turbocat.net (turbocat.net [IPv6:2a01:4f8:c17:6c4b::2])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 1F57881A01
 for <freebsd-multimedia@freebsd.org>; Fri, 20 Oct 2017 16:24:44 +0000 (UTC)
 (envelope-from hps@selasky.org)
Received: from hps2016.home.selasky.org (unknown [62.141.128.70])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mail.turbocat.net (Postfix) with ESMTPSA id 8850A260117;
 Fri, 20 Oct 2017 18:24:42 +0200 (CEST)
Subject: Re: Advice for audio recording
To: Michael Reifenberger <mike@reifenberger.com>, hps@freebsd.org
Cc: freebsd-multimedia@freebsd.org
References: <20171020173704.Horde.jj_YkUyt6oyqr6Lqy0qwVD-@mail.eeeit.de>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <fd0af04c-b27a-4ab6-45b4-9975fdba400e@selasky.org>
Date: Fri, 20 Oct 2017 18:22:04 +0200
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101
 Thunderbird/52.3.0
MIME-Version: 1.0
In-Reply-To: <20171020173704.Horde.jj_YkUyt6oyqr6Lqy0qwVD-@mail.eeeit.de>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-multimedia@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Multimedia discussions <freebsd-multimedia.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-multimedia>, 
 <mailto:freebsd-multimedia-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-multimedia/>
List-Post: <mailto:freebsd-multimedia@freebsd.org>
List-Help: <mailto:freebsd-multimedia-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-multimedia>, 
 <mailto:freebsd-multimedia-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 20 Oct 2017 16:24:44 -0000

On 10/20/17 17:37, Michael Reifenberger wrote:
> 
> (Hmm, why dev.pcm.4.rec.vchanformat: s16le:2.0 , shouldn't it be 
> s24le:2.0?)

Hi,

You should override this into s24le:2.0 - yes. Further you should set 
bitperfect to avoid resampling issues and the software volume control. 
The DSP device will then refuse to open in any other ways than what is 
printed in dmesg, with regards to sampling rate and sample size and 
channels.

In 11- and 12- you can simply put dev.pcm.4.rec.vchanformat=xxx in the 
kernel environment (man kenv) or in /boot/loader.conf (requires reboot) 
and these settings will be programmed automatically for pcm #4 every 
time you plug this device.

At home I'm using:
http://www.music-group.com/Categories/Behringer/Mixers/Digital-Mixers/X32-RACK/p/P0AWN

Which I'm very happy with. It works well with FreeBSD and is controlled 
via a wireless pad (iOS or Android at your choice).

--HPS