TY - GEN
T1 - A low-power mandarin-specific hearing aid chip
AU - Wei, Cheng Wen
AU - Kuo, Yu Ting
AU - Chang, Kuo Chiang
AU - Tsai, Cheng Chun
AU - Lin, Jihi Yu
AU - FanJiang, Yi
AU - Tu, Ming Hsien
AU - Liu, Chih-Wei
AU - Chang, Tian-Sheuan
AU - Jou, Shyh-Jye
PY - 2010/12/1
Y1 - 2010/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79952827485&partnerID=8YFLogxK
U2 - 10.1109/ASSCC.2010.5716623
DO - 10.1109/ASSCC.2010.5716623
M3 - Conference contribution
AN - SCOPUS:79952827485
SN - 9781424482979
T3 - 2010 IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
SP - 333
EP - 336
BT - 2010 IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
T2 - 2010 6th IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
Y2 - 8 November 2010 through 10 November 2010
ER -