From help-request at octave dot org Mon Apr 10 11:47:51 2006
Subject: Re: square waves
From: NZG <ngustavson at emacinc dot com>
To: Paul Kienzle <pkienzle at users dot sourceforge dot net>
Cc: Doug Stewart <dastew at sympatico dot ca>, help@octave.org
Date: Mon, 10 Apr 2006 11:46:32 -0500

A generalized approach to Paul Kienzle's suggested method.

## v = pwms(t,period,duty)
##
## square pulse width modulation
##
## period in units of samples, duty is the fraction the pwm is "high".

function v = pwms(t,period,duty)

pw = period*duty;

v = pulstran(t,(period -pw/2):period:length(t),'rectpuls',period*duty);

endfunction 

NZG



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