Single-board general-purpose speech recognition system
This paper describes a single-board implementation of an isolated word recognizer based on the principles of linear predictive coding (LPC) and dynamic time warping (DTW). The recognizer requires only a serial (RS-232) terminal, power supply, and microphone for operation, and may be used to add speech input capability to any serial terminal connected to a host computer. Key elements of the recognizer include a custom integrated circuit for DTW-based pattern matching, a single-chip implementation of real-time LPC feature measurement, and a 16-bit microprocessor for control, communication, and decision functions. As a result of the custom integrated circuit and multiple processor architecture, pattern matching speed is increased by a factor of 50 over an earlier design with no custom integrated circuits and without pipeline processing capabilities, and proceeds on one word while LPC measurement on the next is in progress, increasing speech throughput.
- Research Organization:
- AT and T Bell Labs., Murray Hill, NJ
- OSTI ID:
- 6555873
- Journal Information:
- Bell Syst. Tech. J.; (United States), Vol. 65:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
SPEECH SYNTHESIZERS
ARTIFICIAL INTELLIGENCE
COMPUTERIZED CONTROL SYSTEMS
DESIGN
COMMUNICATIONS
COMPUTER CODES
DECISION MAKING
EFFICIENCY
INTEGRATED CIRCUITS
MICROPROCESSORS
NATURAL LANGUAGE
PERSONAL COMPUTERS
POWER SUPPLIES
RECORDING SYSTEMS
SPEECH
COMPUTERS
CONTROL SYSTEMS
DIGITAL COMPUTERS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
MICROELECTRONIC CIRCUITS
PROGRAMMING LANGUAGES
420800* - Engineering- Electronic Circuits & Devices- (-1989)
990210 - Supercomputers- (1987-1989)