From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762267Ab2FHRvT (ORCPT ); Fri, 8 Jun 2012 13:51:19 -0400 Received: from audible.transient.net ([216.254.12.79]:48737 "HELO audible.transient.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750795Ab2FHRvS (ORCPT ); Fri, 8 Jun 2012 13:51:18 -0400 Date: Fri, 8 Jun 2012 17:50:43 +0000 From: Jamie Heilman To: Markus Trippelsdorf Cc: 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: <20120608175043.GA5109@cucamonga.audible.transient.net> Mail-Followup-To: Markus Trippelsdorf , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, zonque@gmail.com, tiwai@suse.de References: <20120608164004.GA580@x4> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120608164004.GA580@x4> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. -- Jamie Heilman http://audible.transient.net/~jamie/