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dc.contributor.authorLai, Shin-Chien_US
dc.contributor.authorLiu, Chih-Haoen_US
dc.contributor.authorWang, Ling-Yien_US
dc.contributor.authorChen, Shin-Haoen_US
dc.contributor.authorChen, Ke-Horngen_US
dc.date.accessioned2015-12-02T02:59:12Z-
dc.date.available2015-12-02T02:59:12Z-
dc.date.issued2015-06-01en_US
dc.identifier.issn1549-8328en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TCSI.2015.2411795en_US
dc.identifier.urihttp://hdl.handle.net/11536/127906-
dc.description.abstractThis paper presents a novel algorithm and architecture design for 18-band quasi-class-2 ANSI S1.11 1/3 octave filterbank. The proposed design has several advantages such as lower group delay, lower computational complexity, and lower matching error. The technique we developed in this paper can be summarized as follows: 1) a simple low-pass filter (LPF) and discrete cosine transform (DCT) modulation are utilized to generate a uniform 9-band filterbank first, and then all elements of are replaced by all-pass filters to obtain a non-uniform filterbank; 2) a fast recursive structure and variable-length algorithm is further developed to efficiently accomplish DCT modulation. Thus, the spectrum of LPF can be easily spanned and flexibly extended to the location of the desired central frequency; 3) after employing the multi-rate algorithm, an 18-band non-uniform filterbank is generated from two 9-band sub filterbanks by following the proposed design steps and parameter determinations. Compared with the latest Liu et al.\'s quasi-class-2 ANSI S1.11 design, the proposed method-I (Proposed-I) totally has 72.8% reduction for multiplications per sample, 11.25-ms group delay, and 59 additions decreased per sample. Moreover, the maximum matching error of the proposed method-II (Proposed-II) is averagely equal to 1.79 dB much smaller than that of the latest Wei et al.\'s design. For the proposed variable-length DCT modulation, only 2 adders, 2 multipliers, 2 multiplexers, and 5 registers are required for hardware implementation after applying VLSI retiming scheme. Overall, the proposed filterbank design would be a new solution for future applications in the area of hearing aids.en_US
dc.language.isoen_USen_US
dc.subjectANSI S1.11en_US
dc.subjectdigital hearing aidsen_US
dc.subjectdiscrete cosine transform (DCT) modulationen_US
dc.subjectfilterbanken_US
dc.title11.25-ms-Group-Delay and Low-Complexity Algorithm Design of 18-Band Quasi-ANSI S1.11 1/3 Octave Digital Filterbank for Hearing Aidsen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TCSI.2015.2411795en_US
dc.identifier.journalIEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERSen_US
dc.citation.volume62en_US
dc.citation.spage1572en_US
dc.citation.epage1581en_US
dc.contributor.department電子工程學系及電子研究所zh_TW
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.identifier.wosnumberWOS:000356935700014en_US
dc.citation.woscount0en_US
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