Choose BiQuad Q #786
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Choose BiQuad Q #786
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This pull request allows the ability to choose your q value for the biquad filter. Filters with a higher q will have a steeper cutoff at the cutoff freq, and a lower q has more of a roll off. The lower q will lead to less ringing and more linear changes in phase delay and frequency. Higher q will have your phase delay more abrupt. A q of 71 (will turn into 0.71) approximates butterworth filter response, and a q of 57 (0.57) will approximate bessel filter response.