It uses Linear Predictive Coding technique, which is one of the most useful methods for encoding good quality speech at low bit rate. LPC Provides extremely accurate estimates of speech parameters, and is relatively efficient for computation. The important aspect of LPC is the linear predictive filter, which allows the value of the next sample to be determined by a combination of previous samples.

Author: Kadaba, Manjunath D
Affiliation: Uvinix Computing Solutions
AES Convention: 122 (May 2007) Paper Number: 7029
Publication Date: May 1, 2007
Subject: Signal Processing, Sound Quality Design

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