From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934412Ab2FHSL6 (ORCPT ); Fri, 8 Jun 2012 14:11:58 -0400 Received: from ud10.udmedia.de ([194.117.254.50]:50952 "EHLO mail.ud10.udmedia.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751394Ab2FHSL4 (ORCPT ); Fri, 8 Jun 2012 14:11:56 -0400 Date: Fri, 8 Jun 2012 20:11:54 +0200 From: Markus Trippelsdorf To: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, zonque@gmail.com, tiwai@suse.de Subject: Re: [Bisected] ALSA: snd-usb: New streaming logic causes distortions on Burr-Brown DAC Message-ID: <20120608181154.GA267@x4> References: <20120608164004.GA580@x4> <20120608175043.GA5109@cucamonga.audible.transient.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120608175043.GA5109@cucamonga.audible.transient.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2012.06.08 at 17:50 +0000, Jamie Heilman wrote: > Markus Trippelsdorf wrote: > > I hear distortions on my Burr-Brown USB DAC whenever the (software) > > volume is set to some value lower than 100% in mpd. The lower the volume > > the bigger are the resulting distortions. > > see patch: http://marc.info/?l=linux-kernel&m=133905533312625&w=2 > > You're probably getting distortion because mpd decided it would use > a stream format that's only 8bit. Yes. The patch fixes the issue. Many thanks. -- Markus