一种模拟耳蜗放大器的360声道语音预处理器

2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers Pub Date : 2006-09-18 DOI:10.1109/ISSCC.2006.1696289

Bo Wen, K. Boahen

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引用次数: 41

摘要

一个基于耳蜗的语音识别预处理器模拟了两个4680元的扩散网格的流体管道，360个二阶切片的基底膜，以及2160个脉冲频率调制器的听神经。该硅耳蜗集成在10.9mm2in 0.25 mm CMOS中，功耗52mW，采用主动双向耦合，选择性放大机制，可锐化调谐(Q10为2.7)并控制增益(24dB压缩)。

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A 360-Channel Speech Preprocessor that Emulates the Cochlear Amplifier

A cochlea-based preprocessor for speech recognition emulates the fluid ducts with two 4680-element diffusive grids, the basilar membrane with 360 2nd-order sections, and the auditory nerve with 2160 pulse-frequency modulators. Integrated in 10.9mm2in 0.25mum CMOS and consuming 52mW, this silicon cochlea employs active bidirectional coupling, a selective amplification mechanism that sharpens tuning (Q10 is 2.7) and controls gain (24dB compression)

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2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers

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