MELP - Mixed-Excitation Linear Predictive

Vocoders by Adaptive Digital

ADT MELP SPEECH CODER C55x , C6x

DESCRIPTION

Adaptive Digital's MELP (Mixed-Excitation Linear Predictive) vocoder is a real-time implementation of the Federal Standard 2400 bps speech coder, suitable for use by OEM customers for VoIP, telecom, military and government, and other low bit-rate compressed speech applications.

Data sheet:.pdf

Coding Rate: 2.4 kbps MELP

Sampling Rate: 8 kHz

FEATURES

  1. Functions are C-callable

  2. Multiple channel capable

AVAILABILITY

ADT MELP is available on the TMS320™ DSP Family

C55x™ DSP Generation, and C6000™DSP Platform
C62x™ DSP, C64x™ DSP, & C67x™ DSP Generations

 

SPECIFICATIONS

MELP C55x

All Memory usage is given in units of byte.

Function MIPS Program Memory Data Memory Scratch
Memory		 Per-Channel Data Memory
Encode 24.3 21372 19456 3080 2480
Decode 15.1 896

 

Last update: 05/05/2005

MELP C6x-
C62x, C64x, C67x

All Memory usage is given in units of byte.

Function MIPS Program Memory Data Memory Scratch Per-Channel Data Memory
Encode VAD2 21.1 53312 19280 3064 2480
Decode 14.7 57632 904
Encode VAD2 / Decode 35.8 61248 3384

Last update: 11/19/2007

FUNCTION

InitializeMelpEncoderChannel (. . .) Initializes the MELP encoder

InitializeMelpDecoderChannel (. . .) Initializes the MELP decoder

EncodeMelp (. . .) Executes the MELP encoder

DecodeMelp (. . .) Executes the MELP decoder

 

 

 

PRODUCTS