Classical Estimation of MELP in Speech Coding
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The classical estimation method for MELP in speech coding is demonstrated through the following MATLAB example code:
% Import audio signal
[y, fs] = audioread('audio.wav');
% MELP parameter estimation typically includes:
% - Linear predictive coding (LPC) analysis for spectral envelope
% - Pitch detection using autocorrelation or cepstral methods
% - Bandpass voicing analysis for mixed excitation determination
% - Fourier magnitude estimation for spectral enhancement
% Result output and parameter quantization
This example code demonstrates how to implement classical MELP speech coding estimation in MATLAB. The implementation typically involves multiple signal processing stages including frame-based analysis, parameter extraction, and quantization. You can modify and extend this code according to your specific speech coding requirements, such as adjusting frame sizes, improving pitch detection algorithms, or customizing parameter quantization schemes for different applications.
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