@inproceedings{8851c410d19c4a3d9e570aac87e2a688,
title = "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",
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.",
author = "Lai, {Shin Chi} and Liu, {Chih Hao} and Wang, {Ling Yi} and Lei, {Sheau Fang}",
year = "2014",
month = dec,
day = "24",
doi = "10.1109/IIH-MSP.2014.27",
language = "English",
series = "Proceedings - 2014 10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "81--84",
editor = "Junzo Watada and Akinori Ito and Chien-Ming Chen and Jeng-Shyang Pan and Han-Chieh Chao",
booktitle = "Proceedings - 2014 10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014",
address = "United States",
note = "10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2014 ; Conference date: 27-08-2014 Through 29-08-2014",
}