FMSYNTH_PARAM_FREQ_MOD constant
int
const FMSYNTH_PARAM_FREQ_MOD
< Frequency mod factor. The base frequency of the operator is note frequency times the freq mod. E.g. A4 with freq mod of 2.0 would be 880 Hz.
Implementation
static const int FMSYNTH_PARAM_FREQ_MOD = 2;