Simple Function Generator

function "sfg.m" can generate sin,square,duty square,iso triangle,saw tooth,sweep .and fft.

Simple Function Generator "sfg.m" is function generator.

kind of signals
1.sin
2.square(duty 50%)
3.duty square(0<duty<100%)
4.iso triangle
5.saw tooth
6.sweep

and fft analyze signals with optional argument).

So it is suitable learning frequency analyze,
to evaluate filter.

How to use

first using,input
>>sfg('demo')
you can know summary this command,
and watch all kind of plot.