From owner-freebsd-multimedia Tue Dec 23 09:17:11 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id JAA21171 for multimedia-outgoing; Tue, 23 Dec 1997 09:17:11 -0800 (PST) (envelope-from owner-freebsd-multimedia) Received: from rah.star-gate.com (rah.star-gate.com [204.188.121.18]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id JAA21163 for ; Tue, 23 Dec 1997 09:17:03 -0800 (PST) (envelope-from hasty@rah.star-gate.com) Received: from rah.star-gate.com (localhost.star-gate.com [127.0.0.1]) by rah.star-gate.com (8.8.8/8.8.8) with ESMTP id JAA01380; Tue, 23 Dec 1997 09:16:42 -0800 (PST) (envelope-from hasty@rah.star-gate.com) Message-Id: <199712231716.JAA01380@rah.star-gate.com> X-Mailer: exmh version 2.0gamma 1/27/96 To: Stephen Roome cc: Luigi Rizzo , multimedia@freebsd.org Subject: Re: precise soundcard tuning ? In-reply-to: Your message of "Tue, 23 Dec 1997 11:59:32 GMT." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 23 Dec 1997 09:16:41 -0800 From: Amancio Hasty Sender: owner-freebsd-multimedia@freebsd.org X-Loop: FreeBSD.org Precedence: bulk I apologies to SB owners and to myself for I am SB16 PnP owner . Now, SB cards are notorious for their clock innacuracy and 5% is not really unheard of . Jim Lowe once reported a SB card which was 10% off . The GUS PnP comes with two crystals: 24.576-MHz and a 16.9344 MHz. Amancio > On Mon, 22 Dec 1997, Amancio Hasty wrote: > > After about 7 minutes or so: > > 3112000 388.919 8001.66 > > > Okay, I've not had a chance to test this one yet, but I don't think that's > the problem I was initially experiencing. > > I was playing a 440 Hz wave and it was coming back somewhere between a G > (391Hz) and a G# (416Hz). It's nearer G# to be fair, but that's still at > least 5.45% out. > > Even combining any inaccuracies in my RTC, with the sound card 5% is quite > a big swing. > > So, I'm still going with your original (if defamatory) statement about > sound blaster cards, my Creative Labs cdrom drive isn't any better either. > > Steve. > > Steve Roome - Vision Interactive Ltd. > Tel:+44(0)117 9730597 Home:+44(0)976 241342 > WWW: http://dylan.visint.co.uk/ >