Subject: Re: [linux-audio-user] Bandlimited oscillator plugins for LADSPA ('blop-0.1.0')
From: Mike Rawes (mike_rawes_AT_yahoo.co.uk)
Date: Wed May 15 2002 - 21:54:19 EEST
On Wed, 15 May 2002 14:31:14 -0400
Paul Winkler <pw_lists_AT_slinkp.com> wrote:
> On Wed, May 15, 2002 at 05:25:51PM +0100, Mike Rawes wrote:
> > Maybe. The sawtooth contains all harmonics (well, up to one half of
> > the sample rate) at equal energies, which might be useful.
>
> If it actually looks like a classic sawtooth wave, that's not true.
> From Dodge, "Computer Music", 2nd edition, page 50:
> "The spectrum of a sawtooth wave is shown in figure 2.25c. In this
> case, all harmonics are present and they diminish in direct proportion
> to the harmonic number."
>
> A waveform with equal energy in all harmonics up to nyquist is
> described on pp. 170-171. It's called "buzz" in the music-N family
> (csound, cmix, saol etc).
>
I stand corrected. I'll have to get that book, it sounds like it'd be
handy.
And my sawtooth is indeed a sawtooth (being generated by Sum[h:1,N] (1/h
* sin(h*phase*2*PI)). I was just fast and loose with the description.
-- Myk_________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
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