Improved 1-bark bandwidth auditory filters
Andrew A. Sekey, Brian A. Hanson · The Journal of the Acoustical Society of America · 1983
A critical band filtering function attributed to Schroeder [A. J. Fourcin, Rapporteur, “Speech processing by man and machine,” in Theodore H. Bullock (1977), Recognition of Complex Acoustic Signals, Dahlem Konferenzen, Berlin] is modified so as to (i) ensure 1-bark bandwidth, (ii) have asymptotic slopes which reflect masking characteristics of the human ear, and (iii) attains its maximum at 0 bark. A bank of the new filters spaced at 1-bark intervals is presented, and its smoothing effect on a vowel spectrum is illustrated.