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. 2019 Oct 22;62(10):3876–3886. doi: 10.1044/2019_JSLHR-H-18-0449

Figure 1.

Figure 1.

Examples of spectral modulation superimposed on a 3-octave carrier (400–3200 Hz). In Panel A, the signal stimulus has a modulation frequency of 0.5 cycles/octave (black line) at a 20-dB modulation depth (solid black line) and the standard stimulus is unmodulated (blue dashed line). Panel B shows a similar example for 2 cycles/octave. Panels C and D show estimated excitation patterns (EPs) for the standard unmodulated noise (black line) and modulated signal (blue dashed line). Panel E depicts an average spectral modulation transfer function (SMTF) for a 400-ms duration.