Title :
Auditory filter bank inversion
Author :
Lin, L. ; Holmes, W.H. ; Ambikairajah, E.
Author_Institution :
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
Abstract :
Models of auditory filtering using the Gammatone filter bank are useful tools in speech processing. A perceptually accurate auditory inversion model has applications in speech and audio coding. This paper proposes a new auditory filter bank inversion method using a least squares optimization technique. The proposed method is computationally efficient and its low delay makes it suitable for frame-by-frame processing. Three other approaches to Gammatone analysis/synthesis filter bank implementations are compared with the proposed method
Keywords :
FIR filters; IIR filters; audio signal processing; filtering theory; optimisation; speech processing; Gammatone filter bank; analysis/synthesis filter bank; audio coding; auditory filter bank inversion; auditory filtering models; auditory inversion model; frame-by-frame processing; least squares optimization technique; low delay; speech coding; speech processing; Auditory system; Channel bank filters; Delay; Filter bank; Filtering; Finite impulse response filter; Frequency; Least squares methods; Speech coding; Speech processing;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921126
