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Sample Alchemy Comb PM filter in Logic Pro for Mac
A comb filter is a type of digital audio effect that creates a characteristic “comb” pattern of peaks and troughs in the frequency spectrum of an audio signal. It is named after the shape of the frequency response curve, which looks like the teeth of a comb.
The Comb PM filter is useful for classic bright Karplus-Strong style sounds, where the exciter impulse is not easily heard and the comb is more prominent. Be careful with your resonance level because it is capable of quickly going to extremes, which can lead to feedback. Start with a resonance level of zero, and increase (or decrease) slowly to find a suitable effect strength.
Comb PM filter parameters
Note: Set the modulation frequency.
Feedback: Controls the amount of feedback in the comb circuit.