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Lecture 13_winter_2012

Lecture 13_winter_2012 - Digital Speech Processing Lecture...

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1 Digital Speech Processing— Lecture 13 Linear Predictive Coding (LPC)- Introduction
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2 LPC Methods LPC methods are the most widely used in speech coding, speech synthesis, speech recognition, speaker recognition and verification and for speech storage – LPC methods provide extremely accurate estimates of speech parameters, and does it extremely efficiently – basic idea of Linear Prediction: current speech sample can be closely approximated as a linear combination of past samples, i.e., 1 ( ) ( ) for some value of , 's α α = = p k k k s n s n k p
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