A low-power mandarin-specific hearing aid chip

Cheng Wen Wei*, Yu Ting Kuo, Kuo Chiang Chang, Cheng Chun Tsai, Jihi Yu Lin, Yi FanJiang, Ming Hsien Tu, Chih-Wei Liu, Tian-Sheuan Chang, Shyh-Jye Jou

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    14 Scopus citations


    This paper presents a digital hearing aid chip designed for Mandarin user to enhance speech quality and intelligibility. The hearing aid consists of an 18 subbands analysis and synthesis filter bank, insertion gain stage, and three channels wide dynamic range control for the new Mandarin-specific auditory compensation algorithm. A noise reduction block based on multiband spectral subtraction and enhanced entropy voice activity detection is also included to enhance quality. We reduce the power consumption of these algorithms through algorithmic and architecture optimization. In addition, for the data storage requirement, a low power SRAM that can operate at 0.6V and below is developed. Moreover, several strategies such as multi-clock domain, bypass mode, and voltage scaling are also adopted for power reduction. The chip measurement shows that the hearing aid consumes 314uW at 0.6V.

    Original languageEnglish
    Title of host publication2010 IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
    Number of pages4
    StatePublished - 1 Dec 2010
    Event2010 6th IEEE Asian Solid-State Circuits Conference, A-SSCC 2010 - Beijing, China
    Duration: 8 Nov 201010 Nov 2010

    Publication series

    Name2010 IEEE Asian Solid-State Circuits Conference, A-SSCC 2010


    Conference2010 6th IEEE Asian Solid-State Circuits Conference, A-SSCC 2010


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