Improved 1-Bark bandwidth auditory filter
Andrew A. Sekey, Brian A. Hanson · The Journal of the Acoustical Society of America · 1984
A critical band filtering function attributed to Schroeder [A. J. Fourcin et al., ‘‘Speech processing by man and machine,’’ in Recognition of Complex Acoustic Signals, edited by Theodore H. Bullock (Dahlem Konferenzen, Berlin, 1977)] is modified to (i) ensure 1-Bark bandwidth, (ii) have asymptotic slopes which reflect filtering characteristics of the human ear, and (iii) attain 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.