hscript pulse-wave modulation?

[chrish]

I'm trying to find an hscript expression that will generate a pulse signal where the pulse interval and the pulse width can be easily controlled and vary with time. I've trying an expression like this . . .

pulse(fit($F % (ch("pulsefreq") * rand($F)),0,ch("pulsefreq") * rand($F),0,1),ch("pulselow"),ch("pulsehi"))

. . . using the modulo operator on frame values. I can get something close, but it is still difficult to control the width and interval of the pulses in an easy way.

Any suggestions (using hscript) would be appreciated.

Thanks,

Chris

[mrice]

would this work for the basic expression?

if( $T*ch("freq") - floor($T*ch("freq")) > ch("width")*ch("freq"),  0, ch("amp") )

[chrish]

thanks, this works nicely.

would this work for the basic expression?

if( $T*ch("freq") - floor($T*ch("freq")) > ch("width")*ch("freq"),  0, ch("amp") )