M65845AFP 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC

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M65845AFP

DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT

MITSUBISHI ELECTRIC  

M65845AFP PRELIMINARY Nsootmicee

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DIGITAL ECHO WITH

MITSUBISHI SOUND PROCESSOR

MICROPHONE MIXING CIRCUIT

ICs

3 Input and output LPF

Signal through frequency fsig is also determined by LPF of Digital Echo cut off frequency.

2 degree LPF of Digital Echo is formed by external resistance and capacitor .

(refer to next figure) So, cut off frequency is determined by next formula.

fsig=

2π

1

R8 • R9 • C13 • C14

LPF1

REF

LPF2

REF

12

13

R7

24kΩ

R8 C14

24kΩ

C13 R9 24kΩ

23

24

R7

24kΩ

R8 C14

24kΩ

C13 R9 24kΩ

MITSUBISHI

ELECTRIC

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