Perceptual Metrics for Ideal Reverberation

Some desirable controls for an artificial reverberator include

• $t_{60}(f) =$ desired reverberation time at each frequency
• $G^2(f) =$ signal power gain at each frequency
• $C(f) =$ ``clarity'' = ratio of impulse-response energy in early reflections to that in the late reverb
• $\rho(f) =$ inter-aural correlation coefficient at left and right ears

Perceptual studies indicate that reverberation time $t_{60}(f)$ should be independently adjustable in at least three frequency bands.