From owner-freebsd-hackers@FreeBSD.ORG Tue Mar 9 15:39:17 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 07BEC16A4D0 for ; Tue, 9 Mar 2004 15:39:17 -0800 (PST) Received: from relay8.bu.edu (relay8.bu.edu [128.197.27.238]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6BDAE43D41 for ; Tue, 9 Mar 2004 15:39:16 -0800 (PST) (envelope-from jhoder@bu.edu) Received: from software4.bu.edu (software4.bu.edu [128.197.27.40]) by relay8.bu.edu (8.12.8/8.12.8) with ESMTP id i29Nc5Fa014660 for ; Tue, 9 Mar 2004 18:38:05 -0500 Received: (from nobody@localhost) ((8.9.3p2.buoit.v1.3)/8.9.3/(BU-S-05/17/2000-v1.1)) id SAA27402 for freebsd-hackers@freebsd.org; Tue, 9 Mar 2004 18:38:05 -0500 (EST) From: jhoder@bu.edu To: freebsd-hackers@freebsd.org Date: Tue, 09 Mar 2004 18:38:05 -0500 Message-ID: <1078875485.404e555d87e85@www.bu.edu> X-Mailer: SilkyMail v1.1.7 30-June-2002 BU MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Originating-IP: 128.197.245.127 X-Forwarded-For: 128.197.245.127 X-Mailman-Approved-At: Wed, 10 Mar 2004 05:32:22 -0800 Subject: Equalizer X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Mar 2004 23:39:17 -0000 i'm interested is learning more about freebsd's digital audio functionality, and in particular, i'm interested in developing a graphic audio equalizer which could be run from the command line, but allowing greater control than the stock "mixer" bass and treble functions. would someone explain to me where, for example, the bass and treble controls get their frequency range values? which source files (besides "soundcard.h") need modification to accomplish something like this? forgive my ignorance. i'm new to writing and compiling code but not to the audio world. with some initial guidance, i'm sure i could make a contribution. thanks in advance, john