[sdiy] filter response on a scope

David G. Dixon dixon at interchange.ubc.ca
Mon Oct 18 02:42:41 CEST 2010

> Use XY mode on your scope. Y is driven by a sawtooth wave (upward ramp)
> that also controls an oscillator's pitch. Feed the oscillator (sine wave
> output) into your filter's audio input. X is driven by the output from
> your filter. Set the filter cutoff frequency as appropriate to get a nice
> display.

Thanks, Scott.  I'll give it a try.

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