14-ms-group-delay and low-complexity algorithm design of 18-band quasi-ANSI S1.11 1/3 octave filter bank for digital hearing aids

Shin Chi Lai, Chih Hao Liu, Ling Yi Wang, Sheau Fang Lei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper presents a novel algorithm design of 18-band quasi-class-2 ANSI S1.11 1/3 octave filter bank with the advantages of low group delay and low complexity. The proposed method utilizes a simple low-pass filter (LPF) and discrete cosine transform (DCT) modulation to generate a uniform 9-band filter bank first, and then transfer all element of z-1 into all-pass filter in order to obtain the non-uniform filter bank to meet the standard. Additionally, a fast recursive DCT algorithm is proposed to efficiently accomplish variable-length modulation. Hence, the spectrum of LPF can be easily spanned and flexibly extended to the position of the desired central frequency. Finally, by combining with multi-rate concept, we can realize an 18-band quasi-class-2 filter bank design. Compared with the latest Liu et al.'s quasi-class-2 ANSI S1.11 design, the proposed method totally has 63.4% reduction for multiplications per sample and 14-ms group delay, although we still have 15.2% increase for additions per sample.

Original languageEnglish
Title of host publicationProceedings - 2014 10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014
EditorsJunzo Watada, Akinori Ito, Chien-Ming Chen, Jeng-Shyang Pan, Han-Chieh Chao
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages81-84
Number of pages4
ISBN (Electronic)9781479953905
DOIs
Publication statusPublished - 2014 Dec 24
Event10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014 - Kitakyushu, Japan
Duration: 2014 Aug 272014 Aug 29

Publication series

NameProceedings - 2014 10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014

Other

Other10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014
CountryJapan
CityKitakyushu
Period14-08-2714-08-29

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Artificial Intelligence
  • Signal Processing

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