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Explain in detail pitch detection the applications of LPC to speech processing?

Subject: Speech Processing

Topic: LPC and Parametric Speech Coding

Difficulty: High

1 Answer
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(i) The note is divided into a number of frame. Frame size is made equal to the pitch period. Each frame is passed via window and Linear Prediction Coefficients (LPC) are calculated by using L-D algorithm.

(ii) The LPC obtained are used to predict the further sample and the prediction error is evaluated.

(iii) The synthesis filter in all-pole filter. The synthesized frames are concatenated to synthesize a note.

Block Schematic for LPC synthesis

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