A SINGLE-CHIP 20-CHANNEL SPEECH SPECTRUM ANALYZER USING A MULTIPLEXED SWITCHED-CAPACITOR FILTER BANK

被引：14

作者：

KURAISHI, Y ^{[1
]}

NAKAYAMA, K ^{[1
]}

MIYADERA, K ^{[1
]}

OKAMURA, T ^{[1
]}

机构：

[1] NIPPON ELECT CO LTD,LSI DIV,NAKAHARA KU,KAWASAKI 211,JAPAN

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1984年 / 19卷 / 06期

关键词：

DATA CONVERSION; ANALOG TO DIGITAL - ELECTRIC FILTERS - INTEGRATED CIRCUITS; LSI - SEMICONDUCTOR DEVICES; MOS; -; SPEECH; Recognition;

D O I：

10.1109/JSSC.1984.1052252

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：

A single-chip speech spectrum analyzer which contains a 20-channel filter bank, a 9 bit resolution analog-to-digital converter, and a 396 bit buffer memory is described. Several efficient design techniques were used to realize the equivalent 308th-order transfer functions on a single chip monolithic MOS circuit. A new time division multiplexed switched-capacitor filter technique is introduced which can easily cancel dc offsets which appear in the multiplexed channel outputs. The LSI was fabricated in 3. 5 mu m CMOS technology, with a 7. 0 multiplied by 6. 5 mm**2 die size and a 150 mw power consumption with a plus 5 v single power supply. Experimental results show that designed performance was realized.

引用

页码：964 / 970

页数：7

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