TI DSPS 3rd Party Listings: Vocoder Algorithms: G.726 ADCPM Voice Coder

Digital Signal Processing Solutions Tools: Vocoder Algorithms

Product Name:	G.726 ADCPM Voice Coder
Company Name:	D2 Technologies, Inc.
Features & Benefits:	Compresses 8kHz coded or linear voice data to 16,24,32, and 40 kpbs. Toll quality at 24 kpbs or higher Complies with G.726 coding standard Verified with G.726 test vectors Inter-operability with other G.726 coders
TMS320 Devices Supported:	C2xx C5x C54x C6x
Data Rate (kbps):	8kbps
Program Memory (k word):	2.2kword
Data Memory (k word):	47kword
Processor Loading (MIPS):	12.3MIPS
Target Platform:
Hardware Requirements:	The VP Open architecture places minimal constraints on the underlying hardware and can accommodate a wide variety of systems. No specific TMS320 peripheral devices are required.
Technical Support/Training Available:	YES 90 day warranty plus optional design consultation, algorithm development, system integration services and training available.
Overview:	D2's G.726 ADPCM voice coder algorithm module implements the ITU-T G.726 voice coder standard. It compresses codec or linear data to 16, 24, 32, and 40 kbps code using an ADPCM algorithm. Designed to the VP Open interface, the G.726 voice coder module easily integrates with other VP Open modules, runs in real-time concurrently with other VP Open modules, and handles any number of voice ports assigned to the DSP. Like all of D2's algorithm modules, the G.726 voice coders consists of robust software that is rigorously tested.
Ideal Performance:	Integrated with other VP Open modules and tested for concurrent real-time processing on multiple voice ports.
Algorithm Verification:	Validated through suite of tests: * ITU G.726 test vectors - includes test sequences of voice data and other test signals * Numerical stability tests with tones and extreme values * Code error test with stationary and non-stationary errors * Mean Opinion Scores (MOS) test according to ITU-T P.80 specification for Absolute Category Rating *VP Open interface validation - D2's G.726 module is integrated with other VP Open modules and tested in real-time on the D2 VDS50 system
Availability:	C2xx, C5x, C6x--Consult D2; C54x--Available.
Operating System Used:	Host, voice data input and output, memory allocation, and module to module communication interfaces must conform to VP Open requirements.
Tools Supported By:
Company Information:	D2 Technologies, Inc. 104 West Anapamu Street Santa Barbara CA 93101 USA Tel: 805-564-3424 Fax: 805-966-2144 e-mail: sales@d2tech.com www: http://www.d2tech.com
	Voice processing solutions provider for computer telephony. Over 20 years of industry experience in algorithms, DSP implementation, real-time systems, telephony system integration.