Applications
LPC is generally used for speech analysis and resynthesis. It is used as a form of voice compression by phone companies, for example in the GSM standard. It is also used for secure wireless, where voice must be digitized, encrypted and sent over a narrow voice channel; an early example of this is the US government's Navajo I.
LPC synthesis can be used to construct vocoders where musical instruments are used as excitation signal to the time-varying filter estimated from a singer's speech. This is somewhat popular in electronic music. Paul Lansky made the well-known computer music piece notjustmoreidlechatter using linear predictive coding. A 10th-order LPC was used in the popular 1980's Speak & Spell educational toy.
Waveform ROM in some digital sample-based music synthesizers made by Yamaha Corporation may be compressed using the LPC algorithm.
LPC predictors are used in Shorten, MPEG-4 ALS, FLAC, and other lossless audio codecs.
Read more about this topic: Linear Predictive Coding