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MT9122
Dual Voice Echo Canceller with Tone Detection
Data Sheet
Features
• Dual channel 64 ms or single channel 128 ms echo cancellation
• Conforms to ITU-T G.165 requirements • ITU-T G.165/G.164 disable tone detection
supported on all audio paths • Narrow-band signal detection • Programmable double-talk detection threshold • Non-linear processor with adaptive suppression
threshold and comfort noise insertion • Offset nulling of all PCM channels • Controllerless mode or Controller mode with
serial interface • ST-BUS or variable-rate SSI PCM interfaces • Selectable µ/A-Law ITU-T G.711; µ/A-Law Sign
Mag; linear 2’s complement • Per channel selectable 12 dB attenuator • Transparent data transfer and mute option • 19.
MT9122 Datasheet
