[PD] Analog square wave?
fbar at footils.org
Mon Feb 6 17:56:03 CET 2012
On Mon, Feb 06, 2012 at 09:43:29AM -0500, chris clepper wrote:
> In an analog synth the square wave has some distortion to it: the rise is
> not instantaneous and there is some overshoot of the peak too. Over the
> years this was minimized by using high slew rate amp circuits and the like
> so an old Moog pulse wave is less ideal in shape than a new one.
> For a digital square wave you would want to use band limiting to avoid
> alias artifacts which are quite severe for a square or sawtooth wave. As
> the frequency goes higher both of those waves will begin to look more like
> sine waves as the partials are filtered out. Pretty much every commercial
> digital synth and plugin uses anti-aliased waveforms.
However when using this as a LOW frequency oscillator, I would
simply ignore the literature on bandlimiting and go with a pure digital
aliased wave full force! :)
Frank Barknecht Do You RjDj.me? _ ______footils.org__
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