From owner-freebsd-multimedia@freebsd.org  Wed Dec 13 14:17:43 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 C1B84E9FC68;
 Wed, 13 Dec 2017 14:17:43 +0000 (UTC)
 (envelope-from jbeich@freebsd.org)
Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "freefall.freebsd.org",
 Issuer "Let's Encrypt Authority X3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id A3DF272896;
 Wed, 13 Dec 2017 14:17:43 +0000 (UTC)
 (envelope-from jbeich@freebsd.org)
Received: by freefall.freebsd.org (Postfix, from userid 1354)
 id E3BFB3D8D; Wed, 13 Dec 2017 14:17:42 +0000 (UTC)
From: Jan Beich <jbeich@FreeBSD.org>
To: "Onno K." <onno.k@gmx.com>
Cc: Freebsd-multimedia@freebsd.org, freebsd-questions@freebsd.org
Subject: Re: How to capture audio with FreeBSD?
References: <trinity-b639b15a-c1a2-426d-b47a-69ab299dbcc3-1513171390323@3c-app-mailcom-bs16>
Date: Wed, 13 Dec 2017 15:17:33 +0100
Message-ID: <374e-af0i-wny@FreeBSD.org>
MIME-Version: 1.0
Content-Type: text/plain
X-BeenThere: freebsd-multimedia@freebsd.org
X-Mailman-Version: 2.1.25
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: Wed, 13 Dec 2017 14:17:43 -0000

"Onno K." <onno.k@gmx.com> writes:

> # aplay -l
> aplay: device_list:273: no soundcards found...
> # arecord -l
> arecord: device_list:273: no soundcards found...

ALSA on FreeBSD doesn't support direct hardware access, it uses plugins
such as OSS, Jack, PulseAudio. Try instead:

$ pkg install ffmpeg
$ ffmpeg -f oss -i /dev/dsp foo.wav
<Type Q or Ctrl+C to quit>
$ ffmpeg -i foo.wav -f oss /dev/dsp
<Type Q or Ctrl+C to quit>