From owner-freebsd-questions@FreeBSD.ORG Wed Jan 21 04:44:10 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9029016A4CE for ; Wed, 21 Jan 2004 04:44:10 -0800 (PST) Received: from users.757.org (users.757.org [216.54.62.141]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4205B43D41 for ; Wed, 21 Jan 2004 04:44:09 -0800 (PST) (envelope-from telmnstr@757.org) Received: from users.757.org (telmnstr@localhost [127.0.0.1]) by users.757.org (8.12.9/8.12.5) with ESMTP id i0LCl1HB044310; Wed, 21 Jan 2004 07:47:01 -0500 (EST) (envelope-from telmnstr@757.org) Received: from localhost (telmnstr@localhost) by users.757.org (8.12.9/8.12.5/Submit) with ESMTP id i0LCl0XU044307; Wed, 21 Jan 2004 07:47:01 -0500 (EST) X-Authentication-Warning: users.757.org: telmnstr owned process doing -bs Date: Wed, 21 Jan 2004 07:47:00 -0500 (EST) From: Ethan To: "Daan Vreeken [PA4DAN]" In-Reply-To: <200401210948.04982.Danovitsch@Vitsch.net> Message-ID: <20040121074548.S44235-100000@users.757.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: FreeBSD-questions@FreeBSD.org Subject: Re: USB sound device questions (multiples!) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Jan 2004 12:44:10 -0000 > If they are all plugged in during boot they will get probed in the same order > every time you boot, so yes, they will be static. Okay, because this is going to be a fixed installation that will be pretty much hands off. > Be sure to calculate if you have enough bandwidth available to drive such a > great number of devices at the same time though : > 48KHz * 16-bits sample * stereo * 6 devices = about 48 * 2 * 2 * 6 = > 1152 KB/sec . > That's about the maximum you can get over USB 1.0, so I'm not sure if you will > be able to use them all at the same time at maximum playback rate... So it > depends on the quality and sample-rate you need. I figured I would split them across two USB interface cards?