This web site teaches the creation and operation of the MELP and MELPe vocoders, summarizes their most updated information, and provides useful resources and solutions related to MELP (MIL_STD-3005), and the later enhanced version known as MELPe (STANAG-4591) vocoders.
Introduction to MELP and MELPe Vocoder
Mixed-excitation linear prediction (MELP) is a United States Department of Defense (US DoD) speech coding standard used mainly in military applications and satellite communications, secure voice, and secure radio devices. Its standardization and later development was led and supported by NSA, and NATO. MELPe is the later "enhanced MELP" vocoder.
History of MELP and MELPe Vocoders
Early MELP Vocoder
The initial MELP was invented by Alan McCree around 1995 [1], and standardized in 1997 as MIL-STD-3005.[2] It surpassed other candidate vocoders in the US DoD competition, including:[3]
(a) Frequency Selective Harmonic Coder (FSHC),
(b) Advanced Multi-Band Excitation (AMBE),
(c) Enhanced Multiband Excitation (EMBE),
(d) Sinusoid Transform Coder (STC),
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