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Chang-Min Kim and Soo-Young Lee

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Title: Author: Last modified by: Created Date: 1/30/2002 11:33:16 AM Document presentation format – PowerPoint PPT presentation

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Title: Chang-Min Kim and Soo-Young Lee


1
8051??? ?? ?? ???? ??
  • Chang-Min Kim and Soo-Young Lee
  • Brain Science Research Center and
  • Department of Electrical Engineering and Computer
    Science
  • Korea Advanced Institute of Science and
    Technology

2
??? ?? ?? ????(1)
  • ??? ?? ?? ????
  • ??8051???? ??(???)
  • 12 MHz ?? 1.93 MIPS
  • ???? ?? ??(16??)
  • ?? ??? ?? ?? ???
  • 50 ?? ? 20 ms ?? ?? ?? ??
  • ??? 95 ??

3
??? ?? ?? ????(2)
  • Hynix 0.35 ??
  • ??? ?? 64-TQFP
  • ?? ??? 128x12, 256x8, 2048x8
  • AGC, A/D, D/A ??
  • 12KHz, 12 bit A/D
  • 12Khz, 8 bit D/A
  • ??? ?? ?? ????
  • ?? ?? ????
  • ?? ?? ????
  • ??? ?? ???? ??

4
??? ?? ?? ????(3)
  • CM8051 ??? ? I/O ???

5
??? ?? ?? ????(4)
  • ?? ?? ???

6
ICA ??? ??? ?? ?? ????(1)
  • Adaptive Noise Canceling

Speech Noise

W
Noise
Weight update rule
7
ICA ??? ??? ?? ?? ????(2)
  • ANC Architecture with 1024 delay tabs

convolution
MIC
MAC ROOT
MAC SUB0
MAC SUB1
buffering
update
NOISE
MAC
Buffer 512 x 12 Weight 512 x 14
8
ICA ??? ??? ?? ?? ????(3)
  • FPGA? ??? ??? ??
  • ALTERA APEX EP20K600EBC
  • 12 MHz OSC
  • 12 KHz, 12 bit A/D
  • 2048x12 bit ??? ??

lt Without ANC gt
lt With ANC gt
9
ICA ??? ??? ?? ?? ????(4)
  • Multi-Channel Architecture

convolution
buffering
update
10
?? ?? ??
  • ??? ?? ?? ?? ????
  • One-Chip Solution
  • ICA ??? ??? ?? ??
  • ??? ??? ?? ??
  • ?? ??? ???? ??
  • ??? ??
  • ??? ?? ??? ?? ???
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