From owner-freebsd-multimedia@FreeBSD.ORG Tue Oct 25 09:13:02 2005 Return-Path: X-Original-To: freebsd-multimedia@FreeBSD.org Delivered-To: freebsd-multimedia@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E82BC16A41F for ; Tue, 25 Oct 2005 09:13:02 +0000 (GMT) (envelope-from netchild@FreeBSD.org) Received: from www.ebusiness-leidinger.de (jojo.ms-net.de [84.16.236.246]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3CFDC43D46 for ; Tue, 25 Oct 2005 09:13:01 +0000 (GMT) (envelope-from netchild@FreeBSD.org) Received: from Andro-Beta.Leidinger.net (p54A5D307.dip.t-dialin.net [84.165.211.7]) (authenticated bits=0) by www.ebusiness-leidinger.de (8.13.1/8.13.1) with ESMTP id j9P8rab2030627; Tue, 25 Oct 2005 10:53:36 +0200 (CEST) (envelope-from netchild@FreeBSD.org) Received: from localhost (localhost [127.0.0.1]) by Andro-Beta.Leidinger.net (8.13.3/8.13.3) with ESMTP id j9P9CsF6007371; Tue, 25 Oct 2005 11:12:54 +0200 (CEST) (envelope-from netchild@FreeBSD.org) Received: from pslux.cec.eu.int (pslux.cec.eu.int [158.169.9.14]) by netchild.homeip.net (Horde MIME library) with HTTP; Tue, 25 Oct 2005 11:12:54 +0200 Message-ID: <20051025111254.di86xsyy8s4ks4sg@netchild.homeip.net> X-Priority: 3 (Normal) Date: Tue, 25 Oct 2005 11:12:54 +0200 From: Alexander Leidinger To: Fabrice Grattier References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Internet Messaging Program (IMP) H3 (4.0.3) / FreeBSD-4.11 X-Virus-Scanned: by amavisd-new Cc: freebsd-multimedia@FreeBSD.org, Ariff Abdullah Subject: RE: uaudio and Digigram UAX220 X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Oct 2005 09:13:03 -0000 Fabrice Grattier wrote: > Dear Per Olof, > > Indeed, the UAX220 feature you mention might have something to do > with the problem that is encountered with FreeBSD. > By default, the UAX220 has a fixed internal clock, set at 48 KHz. > Under Windows (XP), Microsoft DirectSound allows "on the fly" > sampling rate conversion (processing being done on PC's CPU) if > playback and/or recording is performed at a different sampling > frequency value. The in-development version of FreeBSD contains sampling rate conversation routines. The patch Per Olof applied to his stable version of FreeBSD should contain this too. The problem is, that the FreeBSD support for USB audio is suboptimal. Some devices may work, some don't. For example I have an USB audio device from Creative. It works... sort of. In Windows I have to first mute the device and then unmute it to be able to hear something. On FreeBSD I haven't found a reliable way to do the same. Sometimes it works, sometimes it doesn't. At the moment you have to be lucky to be able to use USB sound devices. Fixing this is on the TODO list, but since FreeBSD is a volunteer driven Open Source Operating System, nobody knows when someone has enough free time and interest to fix it. Bye, Alexander. -- http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137 You cannot propel yourself forward by patting yourself on the back.