G.726 ADPCM
by HotHaus Technologies

Software Overview

The HotHaus G.726 ADPCM software module provides for 40-kbps and 32-kbps encoding and decoding of 
8-KHz speech signals, and also includes the G.721 ADPCM. It is available standalone or as a service 
for the HausWare media player.
A well written and thorough Technical Reference Manual is available describing the G.726 ADPCM and 
how to interface to it via C or assembly. Example C and 
Psuedocode are included in the manual.
All HotHaus software modules are all designed to operate with minimal MIPS and memory. G.726 ADPCM 
has been written entirely in assembly.

Features and Benefits

•	Uses less than 8 MIPS and 1.5K Words of ROM
•	Fully re-entrant, each extra port requires only small additional RAM space
•	4 KHz of audio bandwidth

Processor and System Requirements

Runs on Texas Instruments TMS320C5x family of DSPs.

Usage Limitations or Performance Considerations

None

Availability

Immediately on 'C5x. Can easily be ported to 'C2xx and other TI fixed-point DSPs.

Company Background and Contact Information

HotHaus are experts in TI fixed-point DSP software algorithms for telecommunications. HotHaus' 
algorithms are ideally suited for advanced telecommunications products such as feature phones, PBX 
or key systems, and general computer telephony products.
HausWare is the flagship of the company's product line, and it provides a complete DSP software 
system architecture specifically for telecommunications products. HausWare is the key to HotHaus 
providing a cost-effective software system solution to our customers.

Contact:	Dan McCallum
		HotHaus Technologies Inc.
		1B - 7218 Progress Way
		Delta BC Canada
		V4G 1H2
		(604) 946-0060
		fax: (604) 946-5811