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Acoustic waveforms of an octave band carrier modulated at 32 Hz (depth = 100% at the source) with a center frequency of 791 Hz (left), 3,165 Hz (center), and 12,660 Hz (right) recorded in the highly reverberant environment at sound source distances between 10 and 160 cm in the ear facing the sound source (−90°). Six modulation cycles are shown.
