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Date:      Mon, 22 Dec 1997 09:33:50 -0800
From:      Amancio Hasty <hasty@rah.star-gate.com>
To:        Stephen Roome <steve@visint.co.uk>
Cc:        Luigi Rizzo <luigi@labinfo.iet.unipi.it>, multimedia@freebsd.org
Subject:   Re: precise soundcard tuning ? 
Message-ID:  <199712221733.JAA01209@rah.star-gate.com>
In-Reply-To: Your message of "Mon, 22 Dec 1997 12:34:11 GMT." <Pine.BSF.3.96.971222122440.5515B-100000@dylan.visint.co.uk> 

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The sound blaster cards are known not to be very precise sound cards.

	Amancio

> 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/
> 





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