ML7021 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

ML7021

Single Rail CODEC

Oki Electric Industry 

¡ Semiconductor

ML7021

HOW TO USE THE ML7021

The ML7021 cancels (based on the RIN signal) the echo which returns to SIN.

Connect the base signal to the R side and the echo generated signal to the S side.

Connection Methods According to Echos

Example 1:

Canceling acoustic echo (to handle acoustic echo from line input)

ML7021

ROUT

RIN

Acoustic echo

CODEC

AFF

SIN + – SOUT

+

CODEC

H Line input

Example 2: Canceling line echo (to handle line echo from microphone input)

Microphone input

ML7021

RIN

ROUT

CODEC

SOUT

AFF

– + + SIN

CODEC

H

Line echo

15

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