PS: +-50 Cent makes sense, since it's half of a semitone interval, see the Information taken from http://www.sengpielaudio.com/calculator-centsratio.htm:
Interval Frequency ratio cents Semitone or minor second 1.059463 : 1 100 Here's a Table of Cents Difference for some frequencies close around 440 Hz: Frequency Difference 435 Hz −19.78 cents 436 Hz −15.81 cents 437 Hz −11.84 cents 438 Hz −7.89 cents 439 Hz −3.94 cents 440 Hz ±0 cent 441 Hz +3.93 cents 442 Hz +7.85 cents 443 Hz +11.76 cents 444 Hz +15.67 cents 445 Hz +19.56 cents So, the conversion factor 4 cents / Hz is valid for the purposes of tuning as an exception only very close around 440 Hz. There is no conversion from Hz to cents and vice versa. Statement: Cent is a logarithmic unit of measure of an interval, and that is a dimensionless "frequency ratio" of f2 / f1. _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
