Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Liu, Chih-Wei | en_US |
dc.contributor.author | Chang, Kuo-Chiang | en_US |
dc.contributor.author | Chuang, Ming-Hsun | en_US |
dc.contributor.author | Lin, Ching-Hao | en_US |
dc.date.accessioned | 2014-12-08T15:29:52Z | - |
dc.date.available | 2014-12-08T15:29:52Z | - |
dc.date.issued | 2013-03-01 | en_US |
dc.identifier.issn | 1549-8328 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1109/TCSI.2012.2209731 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/21415 | - |
dc.description.abstract | The ANSI S1.11 1/3-octave filter bank is suitable for digital hearing aids, but its large group delay and high computational complexity complicate matters considerably. This study presents a 10-ms 18-band quasi-ANSI S1.11 1/3-octave filter bank for processing 24 kHz audio signals. We first discuss a filter order optimization algorithm to define the quasi-ANSI filters. The group delay constraint of filters is limited to 10 ms. The proposed design adopts an efficient prescription-fitting algorithm to reduce inter-band interference, enabling the proposed quasi-ANSI filter bank to compensate any type of hearing loss (HL) using the NAL-NL1 or HSE prescription formulas. Simulation results reveal that the maximum matching error in the prescriptions of the mild HL, moderate HL, and severe-to-profound HL is less than 1.5 dB. This study also investigates the complexity-effective multirate IFIR quasi-ANSI filter bank. For an 18-band digital hearing aid with a 24 kHz sampling rate, the proposed architecture eliminates approximately 93% of the multiplications and up to 74% of the storage elements, compared with a parallel FIR filters architecture. The proposed analysis filter bank (AFB) was designed in UMC 90 nm CMOS high-VT technology, and on the basis of post-layout simulations, it consumes 73 mu W (@V-DD = 1 V). By voltage scaling (to 0.6 V), the simulation results show that the power consumption decreases to 27 mu W, which is approximately 30% of that consumed by the most energy-efficient AFB available in the literature for use in hearing aids. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Filter bank | en_US |
dc.subject | hearing aid | en_US |
dc.subject | low group delay | en_US |
dc.title | 10-ms 18-Band Quasi-ANSI S1.11 1/3-Octave Filter Bank for Digital Hearing Aids | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1109/TCSI.2012.2209731 | en_US |
dc.identifier.journal | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | en_US |
dc.citation.volume | 60 | en_US |
dc.citation.issue | 3 | en_US |
dc.citation.spage | 638 | en_US |
dc.citation.epage | 649 | en_US |
dc.contributor.department | 電子工程學系及電子研究所 | zh_TW |
dc.contributor.department | Department of Electronics Engineering and Institute of Electronics | en_US |
dc.identifier.wosnumber | WOS:000315959100012 | - |
dc.citation.woscount | 3 | - |
Appears in Collections: | Articles |
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