Fmod lipsync question fmod volume affect spectrum extracting

[jeff_fmod]

@simingtu

can u tell me, why fader dsp’s value is at range -80 to 10 from your early response.

The perceived rolloff of sound is approximately logarithmic, -80 is a common minimum. The formula for converting from linear to dB is 20*log10(linear), to convert it back would therefore be 10^(dB/20-1)

@simingtu

in the above code , i find three times. is there a easier way to get the root parent of tone group.

Unfortunately for your use case I think this is the best way I can think of