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. 2010 Feb 10;103(4):1809–1822. doi: 10.1152/jn.00281.2009

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Fig. 1. — Acoustic stimulus. Acoustic waveform (left) and spectrum (right) of a Gaussian narrowband acoustic pulse train (top), a missing fundamental harmonic complex tone (middle), and a sinusoidally amplitude modulated (sAM) tone (bottom). The acoustic pulse train has a 3 kHz carrier, 100 Hz repetition rate, and σ = 0.89. Inset: an enlarged view of a single Gaussian pulse. The missing fundamental harmonic complex tone is composed of harmonics 28–32 and has a 100 Hz fundamental frequency (repetition rate). The sAM tone has a modulation frequency of 100 Hz and a 3 kHz carrier.