VProPRL™
by Voice Processing Corporation

Software Overview

VProPRL is a portable recognizer library consisting of VPro™ continuous speaker-independent, 
discrete speaker-independent, and speaker-dependent speech recognition technologies. It is designed 
for customers who wish to enable VPC speech recognition technologies on platforms other than those 
supported by VPro hardware. Consisting of a library of object modules which can be linked with a 
user application or task, VProPRL is completely embeddable into a wide variety of hardware 
platforms.

Features and Benefits

•	Talkover™
•	Wireline and wireless support
•	Word-spotting
•	High accuracy
•	Languages supported include American English, Australian English, Austrian German, Brazilian 
Portuguese, Canadian French, Castilian Spanish, Central/South American Spanish, Croatian, Dutch, 
French, German, Greek, Italian, Mexican Spanish, New Zealand English, Portuguese, UK English

Features and Benefits

•	Devices supported: TMS320C3x
•	Algorithm category: Speech recognition
•	Data rate: 33 MHz
•	Sampling rate: 8-KHz, 8-bit µ-law, 8-bit A-law, or 14- to 16-bit linear
•	Program memory:
		Data memory:
		Processor loading (MIPS):
•	Quality:  
•	Language: C language

Algorithm Verification

•	Independent field results show per-digit accuracy at 98%+. Word and phrase recognition accuracy 
depends on many factors, including: application, language, and acoustic similarity of words. For a 
demonstration of VPro speech recognition technology call (800) 755-0880, or (617) 577-8422.

Availability

•	License pricing of the VProPRL is available from Voice Processing Corporation.

Company Background and Contact Information

Voice Processing Corporation (VPC) is a  leading supplier of automated speech recognition (ASR) 
systems for over the telephone use. The company's VPro product line, used in telecommunications, 
cellular and PC applications, is sold to original equipment manufacturers (OEMs), value added 
resellers (VARs), and system integrators who in turn develop and provide a wide variety of 
practical speech-enabled applications. These applications offer users more flexibility and 
efficiency when using the telephone to interact with computer systems.
Contact: 	Canby Dautel
		Voice Processing Corporation
		One Main Street
		Cambridge, MA  02142  USA
		(617) 494-0100
		Fax: (617) 494-0100
		e-mail: sales@vpro.com
		http://www.vpro.com