Amplitude modulation below about 60 Hz is well represented in hearing

Evidence

If one considers the TMTF to be similar to a low-pass filter, the TMTF has a cut-off frequency of 55 to 65 Hz. Thus, modulation rates below about 55 Hz are well represented by the auditory system, and rates higher than that become more poorly represented. Across the board, however, the ability to detect the presence of modulation is quite excellent. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1010

Categorization

• DEFINE: The TMTF cutoff frequency is the auditory representation bandwidth for modulation rates.