[Trombone-l] Acoustics of brass instruments

[Daniel Pliskin]

>
>Warning***Geek Hat on**********
>
>I think it is possible you've reversed the expansions for square and
>triangle.  Think about superimposing sets of sine waves to get something
>that looks like a square or triangle.  You're going to need lots more of 
>the
>lower harmonics to make it look like a square.
>

I may well be wrong.  It's been a long time since I played with an analog 
synthesizer and even longer since I studied that stuff.

>
>However, I did that hairclipper experiment, remember?  Fundamental 
>frequency
>was 50 Hz, which the trombone did not amplify.  There was no octave.  But I
>could clearly hear a strong octave plus fifth, which would correspond to 
>150
>Hz, the 3rd harmonic.   So I have to think square wave is correct.
>

But also, I think I'm thinking about that particularly annoying sound when a 
clippers is adjusted wrong.  When it's quietly humming...well...I don't like 
the sound and I don't like the sound of a clarinet, so in that way, theyare 
similar.

DanP