analyze

frequency plot of a sound signal

Arguments

:fmin,fmax,rate,points scalars. default values

fmin=100,fmax=1500,rate=22050,points=8192;

:

Description

Make a frequency plot of the signal w with sampling rate rate. The data must be at least points long. The maximal frequency plotted will be fmax, the minimal fmin.

Examples

// At first we create 0.5 seconds of sound parameters.
t=`soundsec`_(0.5);

// Then we generate the sound.
s=`sin`_(440*t)+`sin`_(220*t)/2+`sin`_(880*t)/2;
[nr,nc]=`size`_(t);
s(nc/2:nc)=`sin`_(330*t(nc/2:nc));
analyze(s);