Linear Predictive Coding   Linear predictive coding is one of a
family of analysis/resynthesis techniques developed in the
search for techniques for speech encoding, transmission and
reception and is still the most widely used technique for
computer-generated speech. LPC attempts to estimate the spectrum
of a sound in terms of the filter coefficients which would be
needed to synthesise that sound when applied to an ’excitation
source’, which may be either noise (for unvoiced sounds), or a
band-limited pulse wave in which all the harmonics are of equal
amplitude. In a synthesis application, both the excitation
waveform and the filter coefficients can be modified (in both
the frequency and time domains) to create related variants of
the original sound. (Source - Richard Dobson (1992). A
Dictionary of Electronic and Computer Music Technology. Oxford
University Press.)    English - Español - Français - Deutch -
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