Biomaterial Database

Speech recognition and control system for the severely disabled. 1980

A Cohen, and D Graupe

The availability of microprocessors opens many applications for speech recognition systems where constraints on price, weight, volume and power consumption are imposed, such as in the case of a voice control system for the severely disabled. A microprocessor based speech recognition system for the voice control of wheelchair, touch-tone phone, typewriter and environmental control unit, is described. The finite word length, fixed point arithmetics and relatively slow execution time of the microprocessor introduce several difficulties in the implementation of the recognition process. Algorithms for feature extraction (mainly the autoregressive, or linear prediction coefficients), classification and training are presented. The hierarchical memory organization is discussed. Results with the ten digit set, used to activate a touch-tone phone, are given. With this set the system exhibits less than one percent substitutions and eleven percent rejections.

UI	MeSH Term	Description	Entries
D008328	Man-Machine Systems	A system in which the functions of the man and the machine are interrelated and necessary for the operation of the system.	Man Machine Systems,Man-Machine System,System, Man-Machine,Systems, Man-Machine
D008838	Microcomputers	Small computers using LSI (large-scale integration) microprocessor chips as the CPU (central processing unit) and semiconductor memories for compact, inexpensive storage of program instructions and data. They are smaller and less expensive than minicomputers and are usually built into a dedicated system where they are optimized for a particular application. "Microprocessor" may refer to just the CPU or the entire microcomputer.	Computers, Personal,Microprocessors,Computer, Personal,Microcomputer,Microprocessor,Personal Computer,Personal Computers
D008962	Models, Theoretical	Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.	Experimental Model,Experimental Models,Mathematical Model,Model, Experimental,Models (Theoretical),Models, Experimental,Models, Theoretic,Theoretical Study,Mathematical Models,Model (Theoretical),Model, Mathematical,Model, Theoretical,Models, Mathematical,Studies, Theoretical,Study, Theoretical,Theoretical Model,Theoretical Models,Theoretical Studies
D010363	Pattern Recognition, Automated	In INFORMATION RETRIEVAL, machine-sensing or identification of visible patterns (shapes, forms, and configurations). (Harrod's Librarians' Glossary, 7th ed)	Automated Pattern Recognition,Pattern Recognition System,Pattern Recognition Systems
D011211	Electric Power Supplies	Devices that control the supply of electric current for running electrical equipment.	Power Sources,Power Supplies,Electric Power Sources,Power Sources, Electric,Power Supplies, Electric,Electric Power Source,Electric Power Supply,Power Source,Power Source, Electric,Power Supply,Power Supply, Electric,Supply, Electric Power
D003201	Computers	Programmable electronic devices designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations.	Calculators, Programmable,Computer Hardware,Computers, Digital,Hardware, Computer,Calculator, Programmable,Computer,Computer, Digital,Digital Computer,Digital Computers,Programmable Calculator,Programmable Calculators
D006233	Disabled Persons	Persons with physical or mental disabilities that affect or limit their activities of daily living and that may require special accommodations.	Handicapped,People with Disabilities,Persons with Disabilities,Physically Challenged,Physically Handicapped,Physically Disabled,Disabilities, People with,Disabilities, Persons with,Disability, Persons with,Disabled Person,Disabled, Physically,Handicapped, Physically,People with Disability,Person, Disabled,Persons with Disability,Persons, Disabled
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012656	Self-Help Devices	Devices, not affixed to the body, designed to help persons having musculoskeletal or neuromuscular disabilities to perform activities involving movement.	Assistive Devices,Assistive Technology,Assistive Device,Assistive Technologies,Device, Assistive,Device, Self-Help,Devices, Assistive,Devices, Self-Help,Self Help Devices,Self-Help Device,Technologies, Assistive,Technology, Assistive
D013060	Speech	Communication through a system of conventional vocal symbols.	Public Speaking,Speaking, Public