[Scilab-users] The sound of mathematical formulas

[Stéphane Mottelet]

Hello,

Cascaded frequency modulation gives nices sounds. For example signals like

sin((w0+a1*sin(w1*t))*t)

w1 itself can also be modulated, and so on. This kind of synthesis was 
used by the famous Yamaha DX-7 and gave typical sounds (bass guitar, 
bells, ...)

S.


Le 05/11/2016 à 13:43, Rafael Guerra a écrit :
>
> Dear Scilab’ers,
>
> Are you aware of any good references showing how to produce brief, 
> nice and useful sounds using simple mathematical formulas?
>
> This is primarily out of curiosity but they could well be played using 
> *sound()* or *playsnd*() functions, and provide different sound 
> warnings during Scilab code execution/interaction.
>
> E.g., something like but hopefully nicer to listen than the following 
> tests:
>
> --> x=1e2:1e4; b=0.6; y=window('hm',length(x)).*sin(x.^b.*log(x)); 
> sound(y,9944)
>
> or:
>
> --> x=1e2:1e4; b=sqrt(2); y=window('hm',length(x)).*sin(x.^b.*log(x)); 
> sound(y,9944)
>
> Thanks and regards,
>
> Rafael
>
>
>
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