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MSM7617 - 2-Channel Echo Canceler

General Description

The MSM7617 cancels echoes (acoustic or line echoes) generated in voice channels.

It is a lowpower CMOS LSI device with two channels.

MSM7617 echo canceling is performed by digital signal processing.

Key Features

  • Echo canceler has two channels, which can be used for acoustic and line echoes. Set as a single cross-connected channel, it can be used for both acoustic and line echoes.
  • ITU-T G164/G165 standard tone disabler.
  • PCM line level adjustment possible with SIN level attenuator (SA pin) and SOUT level amplifier (SG pin). Can also be used for ERL amplification with the SIN level attenuator (SA pin).
  • RGC pin provides input/output adjustment mode (± 6LR mode) that can p.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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E2U0057-38-21 ¡ Semiconductor MSM7617 ¡ Semiconductor 2-Channel Echo Canceler This version: Feb. 1999 MSM7617 Previous version: Aug. 1998 GENERAL DESCRIPTION The MSM7617 cancels echoes (acoustic or line echoes) generated in voice channels. It is a lowpower CMOS LSI device with two channels. MSM7617 echo canceling is performed by digital signal processing. It negates echoes by estimating the echo channel and then generating a pseudo-echo signal. www.DataSheet4U.com When used as an acoustic echo canceler, the MSM7617 can cancel acoustic echoes between speaker and microphone that occur during hands-free speaking with car phones, conferencing system phones, etc. When used as a line echo canceler, the MSM7617 can cancel line echoes returned by hybrid impedance mismatches.