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(A–F) The number of patients who chose a given parameter setting for (A) percent of normal F0 contour, (B) change in F0, (C) change in formant frequencies, (D) spectral smear, (E) bandwidth and (F) flange, metallic and vocoder. In E, the dotted lines indicate the default lower- and upper-frequency limits of the signal-processor filter-bank, 70 and 8,500 Hz, respectively.
