von Christian » 19. Aug 2021, 14:08
This is the answer that Carsten gave on Facebook:
Carsten Meyer
The "different level issue" only occurs on FPGA prior to 09062021. On first two octaves and all drawbars out, level difference should be below 0.5dB when rotary stopped. Double check your FPGA version otherwise.
However, there is a slight level difference on some (!) higher notes due to phase delays and interference. This is normal, as it also occurs on a Leslie with two mics. DO NOT measure levels with only one drawbar out. Even when stopped, the rotary sim will produce interference and "cancel" effects on pure sine waves. This is how the Leslie modulation works, BTW.
This is the answer that Carsten gave on Facebook:
Carsten Meyer
The "different level issue" only occurs on FPGA prior to 09062021. On first two octaves and all drawbars out, level difference should be below 0.5dB when rotary stopped. Double check your FPGA version otherwise.
However, there is a slight level difference on some (!) higher notes due to phase delays and interference. This is normal, as it also occurs on a Leslie with two mics. DO NOT measure levels with only one drawbar out. Even when stopped, the rotary sim will produce interference and "cancel" effects on pure sine waves. This is how the Leslie modulation works, BTW.