Filtresponsemaker is a routine that uses breakpoints and straight lines to create a synthetic frequency response. It is not a standalone instrument, but is found in Filtdeviator w/ Breakpoint Synthesis and Filter w/ Breakpoint Synthesis.
Auto-Adjust FFT Size Limit Data Pitch Format FFT Length |
Freq Response Type Frequency Response Printout: High Cutoff Frequency in Hz Sampling Rate |
Auto-Adjust FFT Size Limit
In auto-adjust mode, the smallest difference between adjacent breakpoint frequencies is used to set the FFT size. 0 turns off this feature.
Data Pitch Format
Determines the format of the numbers in the pitch column in the data file. 0 indicates the numbers will be frequencies, 1 that they will be in the form octave.pitchclass.
FFT Length
The FFT length must be a power of 2. Larger FFT sizes resolve frequencies better but transient behavior more poorly. Choose your FFT size according to the sound you are working with. A size of 1024 or 2048 works well in most cases.
Freq Response Type
A file consisting of frequency/amplitude(dB) pairs, one per line. Some routines such as Centroid can output an ASCII file suitable for use here.