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Thread: 7KHz High Pass filter

  1. #1
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    7KHz High Pass filter

    Hi,

    I've been playing with the state variable filter, but it's upper range seems to be limited. I don't know about the math, etc. of filter design, but can anyone suggest what filter and parameters I can use to make a 7KHz 12 db/oct high pass filter?

    THanks

  2. #2
    Senior Member+ Theremingenieur's Avatar
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    You feed the input signal into In 0 of the AudioFilterStateVariable object, leave In 1 unconnected. Get the high pass signal on Out 2.
    Set parameters as follows: filter1.frequency(7000); filter1.resonance(0.7); filter1.octaveControl(0).
    The 12dB/oct is inherent to the Chamberlin-style state variable filter.
    You are done.

  3. #3
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    Thank you.

    It seems I tried setting the SVF to high frequency values in the past, but recall there was some sort of limit. I'll try it again as soon as I get a chance. Thanks for the reassurance!

    Doug

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