posted 03 February 2003 21:43            

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In the prototypes, under "Tracking Live Input", there is a Sound called "Detect 3 c".

Could you explain why you set the fundamental to 8.1758Hz and the harmonic to 16, rather than use 130.8128Hz and a harmonic of 1?

Does it make a difference? (Filter bandwidth, perhaps?)

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posted 04 February 2003 09:45            

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Yes, the bandwidth of the filter is determined by how far apart the adjacent harmonics are at that harmonic number (i.e. for harmonic 1, they are an octave apart, whereas at harmonic 16 they are about a whole step apart).

Instead, I recommend everyone use the EnergyAtFrequency or FrequencyDetectorGate modules. These are higher-level versions of 'Detect 3C' that automatically compute the fundamental frequency and harmonic number for you (and internally they use the same code as the Detect 3 c example does).

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