TI DSPS 3rd Party Listings: Vocoder Algorithms: G.726 ADPCM Waveform Coder

Digital Signal Processing Solutions Tools: Vocoder Algorithms

Product Name:	G.726 ADPCM Waveform Coder
Company Name:	RadiSys Corp., DSP Division
Features & Benefits:	30 channels per DSP C callable code, multi-thread, multi-tasking Compatible to TASK-6000 development framework
TMS320 Devices Supported:	C6x
Data Rate (kbps):	40, 32, 16, 8
Program Memory (k word):	6
Data Memory (k word):	256
Processor Loading (MIPS):	6.2 (Duplex)
Target Platform:	SPIRIT-6000 (TMS320C6201)
Hardware Requirements:	Best demonstrated over SPIRIT-6000 cPCI board with E1/T1 interface and H.100 support.
Technical Support/Training Available:	YES
Overview:	RadiSys' G.726 ADPCM speech compression algorithm, running on a high performance 200 MHz TMS320C6201 Digital Signal Processor (DSP) from TI, compresses speech and other audio signal components of multimedia. The G.726 ADPCM is a bit-exact implementation of ITU standard voice coder for the TMS320C6x. This coder accepts A-law or mu-law PCM speech samples and compresses it at rates of 40-, 32-, 16- or 8- kbps. The G.726 software code requires 6.2 MIPS (duplex), 6 Kword of program memory and 256 Kwords of data memory. The G.726 algorithm has been optimized to compress speech to the highest quality. The coder is based on adaptive differential waveform quantization and passes Fax, DTMF and other telephony tones. The primary applications of this coder are in digital circuit multiplex equipment (DCME), satellite telephony, and wireless standards such as PACS, DECT and PHP (Japan).
Ideal Performance:
Algorithm Verification:	Full ITU test vectors compatibility (bit-exact). Listening, continuous and DTMF tone passing tests on SPIRIT-6000.
Availability:	Q3 1997
Operating System Used:	TASK-6000 framework. Ports to any other operating system.
Tools Supported By:
Company Information:	RadiSys Corp., DSP Division 2 Wells Avenue Newton MA 02159-3208 USA Tel: 800 628 6502 Fax: 616 235 2531 e-mail: info@radisys.com www: http://www.radisys.com
	RadiSys designs and manufactures a wide range of standard and custom embedded and stand-alone products, including TI DSP-based data and signal processing solutions.