Auditory filter bank inversion
L. Lin, W.H. Holmes, Eliathamby Ambikairajah · 2002
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.