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Draw a block schematic for channel encoder and decoder and explain operations

Subject: Speech Processing

Topic: LPC and Parametric Speech Coding

Difficulty: Low

1 Answer
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(i) Channel vocoders: Channel vocoder models the vocal tract as bank of band-pass filters. The analysis filter at the transmitter side finds the average square value of energy for input speech 50 times per second.

Channel vocoder transmitter block

Receiver for channel vocoder

(ii) Basically, channel vocoder try to match the frequency profile of the input speech signal. …

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