[sdiy] Request brain dump on balanced lines -- harmonic numbering

[John L Marshall]

The fundamental is the first. The math works this way.

For example:

A square wave is an infinite series of odd harmonic sine waves decreasing in
amplitude by the harmonic value. ie. 1st = gain of 1, 3rd = gain of 1/3...
99th = gain of 1/99.

Full wave rectified sine wave only contains even harmonics. The fundamental
must be missing. 2nd, 4th, 6th.....

Drawing sine wave graph overlays is revealing.

Take care,
John
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Pacific Northwest DIY Synthesizer meeting, July 20, 2002
See: www.sound-photo.com
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----- Original Message -----
From: "Scott Gravenhorst" <music.maker at gte.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, October 13, 2002 10:56 AM
Subject: Re: [sdiy] Request brain dump on balanced lines -- harmonic
numbering


> What is the official correct way to number harmonics?
>
> Is the fundamental considered the first?  Or is the
> fundamental not considered a harmonic at all?  To my way of
> thinking, which may be completely in error, the first
> harmonic is a sine wave one octave above (or 2x the freq) of
> the fundamental sine wave.  ??