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Mixed-excitation linear prediction
Mixed-excitation linear prediction (MELP) is a United States Department of Defense 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.
==History==
The initial MELP was invented by Alan McCree around 1995 while a graduate student at the Center for Signal and Image Processing (CSIP) at Georgia Tech. The technology was subsequently licensed to Atlanta Signal Processos Inc. (ASPI) (later acquired by Polycomm), for commercial development. Subsequently, ASPI teamed with Texas Instruments to create the ASPI/GT/TI 2400 bit/s MELP. That initial speech coder was standardized in 1997 and was known as MIL-STD-3005. It surpassed other candidate vocoders in the US DoD competition, including: (a) Frequency Selective Harmonic Coder (FSHC), (b) Advanced Multi-Band Excitation (AMBE), (c) Enhanced Multiband Excitation (EMBE), (d) Sinusoid Transform Coder (STC), and (e) Subband LPC Coder (SBC). Due to its lower complexity than Waveform Interpolative (WI) coder, the MELP vocoder won the DoD competition and was selected for MIL-STD-3005.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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