Claims
- 1. A speech recognition system comprising:
- microphone means for producing speech input signals of various users, to be registered or recognized;
- speech recognition and registration means responsive to a speech input signal from the microphone means, so as to subject the speech input signal to either a registration or a recognition processing, in which upon the registration processing, the speech input signal is allowed to be stored as recognition data and upon the recognition processing, the speech input signal is compared to the recognition data which has been stored; and
- a central processing unit which performs speech recognition processing based on the results of comparison; wherein said speech recognition and registration means comprises a plurality of speech recognition circuits which are connected between a corresponding number of variable characteristic circuits and speech registration RAM's respectively where a plurality of modified speech patterns are stored for each word or each clause, said modified speech patterns including, as the characteristics of the speech, the magnitudes of sound volumes, the varying lengths of sounds, the variation of sound intervals, the husky or somewhat masked voices, and
- each of said variable characteristic circuits is comprised of an amplifier of a different amplification factor and different bandpath characteristic, a set of resistors and a mode designating switch, respectively, to allow the speech which is input through said microphone means in a speech registration mode to be prepared as a variation pattern so that it is stored as such in the speech registration RAM of the corresponding speech recognition circuit, such that when a user inputs his speech through said microphone means it is supplied respectively through said variable characteristic circuits to said speech recognition circuits where the input speeches are compared to the speech patterns which have been registered in the respective speech registration RAMs.
Priority Claims (3)
Number |
Date |
Country |
Kind |
60-181654[U] |
Nov 1985 |
JPX |
|
60-265502 |
Nov 1985 |
JPX |
|
60-287434 |
Dec 1985 |
JPX |
|
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 07/601,013 filed on Oct. 24, 1990 now abandoned, which was a continuation of U.S. patent application Ser. No. 07/382,346 filed on jul. 20, 1989, now abandoned, which was a continuation of U.S. patent application Ser. No. 06/933,213 filed on Nov. 21, 1986 and which has issued as U.S. Pat. No. 4,873,714.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0012463 |
Jan 1983 |
JPX |
0059846 |
Apr 1985 |
JPX |
974850 |
Nov 1964 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Wescon 83 Conference Record, Nov. 8th-11th 1983, San Francisco, pp. 11/4/1-11/4/3, Western Periodical Co., North Hollywood, US; D. Kelley: "Voice recognition is user-friendly" *p. 11/4/1, right-hand column, lines 19,20*. |
Electrical Communication, vol. 59, No. 3, 1985, pp. 281-285, Harlow, G. B.; M. Immendorfer: "Voice Dialer" *pp. 283, 284: Features of the voice dialer; p. 283, left-hand column, lines 18.50*. |
Japan Telecommunications Review, vol. 24, No. 3, Jul. 1982, pp. 267-274, Tokyo, JP; N. Ishii et al.: "Speaker-Independent speech recognition unit development for telephone line use" *p. 269, left-hand column, lines 11-22. |
Continuations (3)
|
Number |
Date |
Country |
Parent |
601013 |
Oct 1990 |
|
Parent |
382346 |
Jul 1989 |
|
Parent |
933213 |
Nov 1986 |
|