A micropower analog circuit implementation of hidden Markov model state decoding

被引:9
作者
Lazzaro, J [1 ]
Wawrzynek, J [1 ]
Lippmann, RP [1 ]
机构
[1] MIT,LINCOLN LAB,LEXINGTON,MA 02173
关键词
analog integrated circuits; hidden Markov models; micropower circuit design; speech recognition; weak-inversion MOSFET circuits;
D O I
10.1109/4.604076
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We describe the implementation of a hidden Markov model state decoding system, a component for a wordspotting speech recognition system. The key specification for this state decoder design is microwatt power dissipation: this requirement led to a continuous-time, analog circuit implementation. We describe the tradeoffs inherent in the choice of an analog design and explain the mapping of the discrete-time state decoding algorithm into the continuous domain. We characterize the operation of a ten-word (81-state) state decoder test chip.
引用
收藏
页码:1200 / 1209
页数:10
相关论文
共 9 条
[1]  
Bourlard H. A., 1994, Connectionist speech recognition: a hybrid approach
[2]  
COGGINS R, 1995, IEEE MICRO, V15, P8
[3]  
Delbruck T., 1991, P INT JOINT C NEURAL, V1, P475
[4]  
LIPPMANN RP, 1987, P INT C NEUR NETW IC, V4, P417
[5]  
LIPPMANN RP, 1994, P INT C AC SPEECH SI, V1, P389
[6]   AN INTEGRATED ANALOG CMOS VITERBI DETECTOR FOR DIGITAL MAGNETIC RECORDING [J].
MATTHEWS, TW ;
SPENCER, RR .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1993, 28 (12) :1294-1302
[7]  
OGUEY H, 1996, P EUR SOL STAT CIRC, P104
[8]  
VANSCHAIK A, 1996, ADV NEURAL INFORMATI
[9]   IMPROVED IMPLEMENTATION OF THE SILICON COCHLEA [J].
WATTS, L ;
KERNS, DA ;
LYON, RF ;
MEAD, CA .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1992, 27 (05) :692-700