MELP - Mixed-Excitation Linear Predictive

ADT MELP C55x , C6x

SPEECH CODER

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

Sampling Rate: 8 kHz

FEATURES

Functions are C-callable
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	21372	19456	3080	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

APPLICATIONS

CDMA networks & mobile phones