From owner-freebsd-multimedia Mon Dec 22 04:32:24 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id EAA20671 for multimedia-outgoing; Mon, 22 Dec 1997 04:32:24 -0800 (PST) (envelope-from owner-freebsd-multimedia) Received: from wakko.visint.co.uk (wakko.visint.co.uk [194.207.134.12]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id EAA20666 for ; Mon, 22 Dec 1997 04:32:21 -0800 (PST) (envelope-from steve@visint.co.uk) Received: from dylan.visint.co.uk (dylan.visint.co.uk [194.207.134.180]) by wakko.visint.co.uk (8.8.5/8.7.3) with ESMTP id MAA06290; Mon, 22 Dec 1997 12:33:11 GMT Date: Mon, 22 Dec 1997 12:34:11 +0000 (GMT) From: Stephen Roome To: Luigi Rizzo cc: multimedia@FreeBSD.ORG Subject: Re: precise soundcard tuning ? In-Reply-To: <199712221033.LAA02195@labinfo.iet.unipi.it> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=iso-8859 Content-Transfer-Encoding: 8BIT Sender: owner-freebsd-multimedia@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Mon, 22 Dec 1997, Luigi Rizzo wrote: > Since capture and acquisition often have the same sample clock, > you could sample the tuning fork with a microphone, determine the > actual period in samples, and then generate the sound with the > "correct" (i.e. equal to the reference) frequency. I'll try this approach. Still, I find it remarkable that I'm going to have to tune a £100 piece of sound hardware with either a £20 guitar tuner or a £2 tuning fork. PC hardware is just such high quality stuff! Many Thanks, Steve. -- Steve Roome - Vision Interactive Ltd. Tel:+44(0)117 9730597 Home:+44(0)976 241342 WWW: http://dylan.visint.co.uk/