A sub-milliwatt audio-processing platform for digital hearing aids  

作　　者：袁甲 陈黎明 于增辉 黑勇 

机构地区：[1]Institute of Microelectronics ,Chinese Academy of Sciences

出　　处：《Journal of Semiconductors》2014年第7期160-164,共5页半导体学报（英文版）

基　　金：supported by the Advanced Research Program of the Chinese Academy of Sciences(No.XDA06020401);the National Natural Science Foundation of China(No.61306039)

摘　　要：We present a novel audio-processing platform, FlexEngine, which is composed of a 24-bit applicationspecific instruction-set processor （ASIP） and five dedicated accelerators. Acceleration instructions, compact instructions and repeat instruction are added into the ASIP＇s instruction set to deal with some core tasks of hearing aid algorithms. The five configurable accelerators are used to execute several of the most common functions of hearing aids. Moreover, several low power strategies, such as clock gating, data isolation, memory partition, bypass mode, sleep mode, are also applied in this platform for power reduction. The proposed platform is implemented in CMOS 130 nm technology, and test results show that power consumption of FlexEngine is 0.863 mW with the clock frequency of 8 MHz at Vdd = 1.0 V.We present a novel audio-processing platform, FlexEngine, which is composed of a 24-bit applicationspecific instruction-set processor （ASIP） and five dedicated accelerators. Acceleration instructions, compact instructions and repeat instruction are added into the ASIP＇s instruction set to deal with some core tasks of hearing aid algorithms. The five configurable accelerators are used to execute several of the most common functions of hearing aids. Moreover, several low power strategies, such as clock gating, data isolation, memory partition, bypass mode, sleep mode, are also applied in this platform for power reduction. The proposed platform is implemented in CMOS 130 nm technology, and test results show that power consumption of FlexEngine is 0.863 mW with the clock frequency of 8 MHz at Vdd = 1.0 V.

关 键 词：application-specific instruction-set processor （ASIP） ACCELERATOR low power hearing aids 

分 类 号：R764.5[医药卫生—耳鼻咽喉科]