Is there a synchronous synchronisation to the given power frequency or
does it have slippage like an asynch engine?
If long term synchronous, there certainly is jitter.
Am 02.01.2019 um 02:50 schrieb Ben Bradley:> Even with that, you're
> still not accounting for variations caused by the mechanical
> geartrain. I can imagine that has an effect, but not how much.
Am 02.01.2019 um 02:50 schrieb Ben Bradley:
as the Hammond tone generation is mechanically tied to the 50Hz or
60Hz power frequency, and I don't think the line frequency has ever
been regulated as accurately as 1 cent (1/100th semitone). For
accurate recordings, you'd need to run the organ off a power inverter
with a quartz crystal derived power frequency. Even with that, you're
still not accounting for variations caused by the mechanical
geartrain. I can imagine that has an effect, but not how much.
Anyway: For this particular recording approach, you will have to the
identify base frequency and its vibrato / tremolo with an equation and
fitting. A FFT will most probably fail.
dupswapdrop: music-dsp mailing list