FIRESS-LPC
by Recosyst R&D

Software Overview

Recosyst Research & Development is offering a software module for high-quality speech and general 
signal compression at 9.6 kbps. The software is conceived to be running entirely on RAM, so that it 
can be loaded from a controller into several compression modules. A near-end echo canceller is 
integrated into the software. The main advantages of this software package are the high-quality, 
the very high-stability degree, and the capability of encoding signals other than speech.
Typical applications are cryptography, multiple-channel speech compression in ISDN, and speech 
recording on computer hard disks.

Features and Benefits

•	High-quality speech coder
•	Integrated echo canceller
•	Excellent stability
•	Adaptability to client-specific machines
•	Capability of encoding signals other than speech
•	Source code on request available (NDA)
•	Innovative approach FIRESS-LPC

Processor and System Requirements

•	Data RAM: 3K word
•	Program RAM or ROM: 6K word
•	Algorithm load: 80% of 'C3x
•	Echo canceller load: 10% of 'C3x

Algorithm Verification

The speech compression algorithm has been tested with several male and female speakers. The 
subjective tests indicate a very high degree of acceptation, especially with female voices, which 
usually represent a problem for traditional speech coders.
Laboratory measurements indicate a signal-to-distortion ratio better than 20 dB with any kind of 
speech.

Availability

The algorithm is available under a royalty-free one-time licensing agreement with source code 
option against NDA. Demonstration versions are available at our facilities in Germany.

Company Background

Recosyst Research & Development is a very small multinational consulting organization specializing 
in the development of client-specific products, especially in the field of DSP. It was founded in 
1985 in Turin, and has since it opened offices in Germany and the UK.

Contact:	Dr. Ing. M. A. Casalegno
		Recosyst R&D
		Reeser straίe 98
		46446 Emmerich
		Germany	
		+49 (2822) 18731
		Fax.: +49 (2822) 18744
		ISDN:  +49 (2822) 92619
		Mobile:  +49 (171) 6008845