EP0423800A2 - Dispositif pour la reconnaissance de la parole - Google Patents

Dispositif pour la reconnaissance de la parole Download PDF

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Publication number
EP0423800A2
EP0423800A2 EP90120020A EP90120020A EP0423800A2 EP 0423800 A2 EP0423800 A2 EP 0423800A2 EP 90120020 A EP90120020 A EP 90120020A EP 90120020 A EP90120020 A EP 90120020A EP 0423800 A2 EP0423800 A2 EP 0423800A2
Authority
EP
European Patent Office
Prior art keywords
speech
symbol train
word
speech recognition
phoneme
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90120020A
Other languages
German (de)
English (en)
Other versions
EP0423800B1 (fr
EP0423800A3 (en
Inventor
Shuji Morii
Shoji Hiraoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0423800A2 publication Critical patent/EP0423800A2/fr
Publication of EP0423800A3 publication Critical patent/EP0423800A3/en
Application granted granted Critical
Publication of EP0423800B1 publication Critical patent/EP0423800B1/fr
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/0018—Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis

Definitions

  • the present invention relates generally to speech recognition systems, and more particularly to such a speech recognition system for operation of an apparatus through speech recognition.
  • a banking service system as disclosed in "Electronic Technique, Vol. 25, No. 1, P 43 to 46, for example.
  • this system is arranged such that a speech inputted through a telephone set 51 or the like is transmitted through a public line 52 or the like up to a speech recognition apparatus 53 at the central processing equipment side where the inputted speech is recogized and the recoginition result is supplied to a task control apparatus.
  • Another approach involves, as illustrated in Fig.
  • a speech recognition system comprising: means responsive to an input of a speech from an external device for recognizing phonemes or syllables constituting the inputted speech to output them as a symbol sequence; means coupled to the extracting means for coding the symbol train and outputting the coded symbol train; means for transmitting the coded symbol train; means coupled through the transmitting means to the coding means for decoding the coded symbol train to restoring it to the original symbol train; and means responsive to the decoded symbol train from the decoding means for recognizing a word or a sentence on the basis of the decoded symbol train.
  • a speech recognition system according.to a first embodiment of the present invention.
  • the speech recognition is generally performed by using words, syllables, phonemes and others as basic units for recognition
  • the syllables, phonemes or the like which are units to allow the expression of a sentence and a word, are used as the basic units.
  • the embodiment will be described in terms of one case of using phonemes which are minimum and indispensable phonological units for description of a given speech.
  • the speech recognition system illustrated at numeral 1 comprises a phoneme recognizing section 2 which recognizes an inputted speech and convertsit into a phoneme-symbol sequence, each phoneme being a basic unit of the inputted speech.
  • the phoneme-symbol train is supplied to a coder 4 to be coded.
  • the coded phoneme-symbol train is supplied through a transmission line 5 to a decoder 6 which in turn decodes the coded phoneme-symbol train.
  • the decoded phoneme-symbol train is supplied to a word and sentence recognizing section 7 for recognizing a word and a sentence making up the speech.
  • the word and senstence recognizing section 7 is also coupled to a word dictionary 8 storing a phoneme notation.
  • the word and sentence recognizing section 7 performs the matching between the phoneme-symbol train outputted from the decoder 6 and the phoneme notation stored in the word dictionary 8.
  • the output of the word and sentence recognizing section 7 is supplied to a task control apparatus 2 which performs applications of the banking service, information retrieval and others.
  • the task control apparatus 2 gives instructions for the speech recognition system 1, for example, selection a different dictionary to change a word to be recognized (one dictionary has a group of words which can be recognized with one speech and the word to be recognized is changeable by selection of one of dictionaries), and start of the recognition.
  • the phoneme recognizing section 3 and the coder 4 are placed at the user side and the decoder 6, the word and sentence recognizing section 7 and the word dictionary 8 are placed at the central processing equipment side which is remotely disposed from the user side.
  • Fig. 4 shows one example of the contents of the word dictionary 8 which are mentioned with phoneme symbols.
  • the "word” column shows Japanese Kanji (Chinese) characters corresponding to, the respective word dictionary items, but not used for the actual recognition. With this arrangement, an operation will be described hereinbelow.
  • the following table 1 shows the kinds of the phonemes of the japanese language used.
  • a speech is inputted as an electric signal through a microphone, a handset and or the like to the phoneme recognizing section 3 in order to recognize the uttered phoneme.
  • the speech signal takes a signal as illustrated by (a) in Fig. 5 and, as obvious from the above-mentioned table 1, the phoneme symbol train becomes "sibuja" as illustrated by (b) in Fig. 5.
  • the recognized phoneme symbol train is supplied to the coder 4 so as to be coded and outputted in order to be suitable for the transmission line 5.
  • the coding is performed in accordance with the frequency shift keying (FSK) system, the phase shift keying (PSK) system or the like. It is also appropriate to use a digital line such as a bus-structure network (Ethernet) as the transmission line 5.
  • the decoder 6 performs a reverse process of the coding with respect to the signal transmitted through the transmission line 5 so as to restore it to the original phoneme symbol train.
  • the word and sentence recognizing section 7 performs a matching of the phoneme symbol train from the decoder 7 with the phonemes of the respective dictionary items in'the word dictionary 8 illustrated in Fig. 4.
  • the word number for the word most similar thereto i.e., "001 " in this embodiment, is outputted as the recognition result to the task control apparatus 2.
  • the word dictionary 8 can be constructed with a plurality of groups so as to be selectively used for every speech recognition process in order to limit the vocabulary.
  • sentence recognition it is required to additionally use syntax information, word-semantic information and others.
  • FIG. 6 A speech recognition system according to a second embodiment of this invention will be described hereinbelow with reference to Fig. 6, where parts corresponding to those in Fig. 3 are marked with the same numerals.
  • the speech recognition system indicated by a dotted line and illustrated at numeral 1 is included in a dialogue or interaction system comprising a terminal apparatus 11 and a central apparatus 12 which are coupled through a transmission line 5 to each other.
  • the speech recognition system 1 comprises a phoneme recognizing section 3 responsive to an inputted speech, a coder 4 coupled to the phoneme recognizing section 3, a decoder coupled through the transmission line 5 to the coder 4, a word and senstence recognizing section 7 and a word dictionary 8.
  • the speech recognizing section 3 and the coder 4 are placed at the terminal apparatus 11 side and the decoder 6, the word and sentence recognizing section and the word dictionary 8 are disposed at the central apparatus 12 side. Further, at the central apparatus 12 side are disposed a task control apparatus 2 coupled to the word and sentence recognizing section 7 and another coder 13 coupled to the task control apparatus 2, and at the terminal apparatus 11 side are disposed another decoder 14 coupled through the transmission line 5 to the coder 13 and a terminal control section 15 coupled to the decoder 14.
  • a pronounced speech by a user at the terminal apparatus 11 side is recognized by the speech recognition system 1.
  • the operation of the task control apparatus for the recognition result is transmitted through the coder 13, transmission line 5 and decoder 14 to the terminal control section 15 which in turn delivers it to the user with a speech or letters through an indicator, a loud speaker or the like.
  • a speech is again introduced into the phoneme recognizing section 3 of the speech recognition system 1.
  • a recognition start command for the speech recognition system 1 is transmitted from the task control apparatus 2 to the word and sentence recognizing section 7 and further through the terminal control section 15 to the phoneme recognizing section 3.
  • phonemes expressing a speech is recognized and a symbol train is coded and transmitted through a transmission means -to a central processing apparatus.
  • the central processing apparatus decodes it and recognizes and outputs the corresponding word or sentence.
  • a speech recognition system for recognizing a speech to be inputted so as to operate a given apparatus in accordance with the recoginized speech.
  • the speech recognition system includes a phoneme recognizing section responsive to input of a speech from an external device for extracting phonemes constituting the inputted speech to output them as a symbol train.
  • the symbol train from the phoneme recognizing section is supplied to a coder for coding the symbol train and outputting the coded symbol train through a transmission line to a decoder for decoding the coded symbol train to restoring it to the original symbol train.
  • the decoded symbol train is inputted to a word and sentence recognizing section which in turn recognizes a word or a sentence on the basis of the decoded symbol train using a word dictionary.

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)
EP90120020A 1989-10-19 1990-10-18 Dispositif pour la reconnaissance de la parole Expired - Lifetime EP0423800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP272846/89 1989-10-19
JP1272846A JPH03132797A (ja) 1989-10-19 1989-10-19 音声認識装置

Publications (3)

Publication Number Publication Date
EP0423800A2 true EP0423800A2 (fr) 1991-04-24
EP0423800A3 EP0423800A3 (en) 1992-01-02
EP0423800B1 EP0423800B1 (fr) 1995-02-01

Family

ID=17519590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120020A Expired - Lifetime EP0423800B1 (fr) 1989-10-19 1990-10-18 Dispositif pour la reconnaissance de la parole

Country Status (3)

Country Link
EP (1) EP0423800B1 (fr)
JP (1) JPH03132797A (fr)
DE (1) DE69016568D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706172A1 (fr) * 1994-10-04 1996-04-10 Hughes Aircraft Company Codeur et décodeur de parole à faible débit binaire
US5909662A (en) * 1995-08-11 1999-06-01 Fujitsu Limited Speech processing coder, decoder and command recognizer
EP1031963A2 (fr) * 1994-03-10 2000-08-30 CABLE & WIRELESS PLC Système de communication
WO2001099096A1 (fr) * 2000-06-20 2001-12-27 Sharp Kabushiki Kaisha Systeme de communication a entree vocale, terminal d'utilisateur et systeme central
EP1220202A1 (fr) * 2000-12-29 2002-07-03 Alcatel Système et procédé de codage d'informations de parole dépendantes du locuteur et indépendantes du locuteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1120469C (zh) 1998-02-03 2003-09-03 西门子公司 传输语音数据的方法
DE19933318C1 (de) * 1999-07-16 2001-02-01 Bayerische Motoren Werke Ag Verfahren zur drahtlosen Übertragung von Nachrichten zwischen einem fahrzeuginternen Kommunikationssystem und einem fahrzeugexternen Zentralrechner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473904A (en) * 1978-12-11 1984-09-25 Hitachi, Ltd. Speech information transmission method and system
GB2183880A (en) * 1985-12-05 1987-06-10 Int Standard Electric Corp Speech translator for the deaf
EP0286035A1 (fr) * 1987-04-09 1988-10-12 Eliza Corporation Dispositif de reconnaissance de la parole utilisant l'identification des phonèmes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151726A (ja) * 1982-03-05 1983-09-09 Nippon Telegr & Teleph Corp <Ntt> 衛星回線による音声伝送方式

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473904A (en) * 1978-12-11 1984-09-25 Hitachi, Ltd. Speech information transmission method and system
GB2183880A (en) * 1985-12-05 1987-06-10 Int Standard Electric Corp Speech translator for the deaf
EP0286035A1 (fr) * 1987-04-09 1988-10-12 Eliza Corporation Dispositif de reconnaissance de la parole utilisant l'identification des phonèmes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1031963A2 (fr) * 1994-03-10 2000-08-30 CABLE &amp; WIRELESS PLC Système de communication
EP1032189A2 (fr) * 1994-03-10 2000-08-30 CABLE &amp; WIRELESS PLC Système de communication
US6125284A (en) * 1994-03-10 2000-09-26 Cable & Wireless Plc Communication system with handset for distributed processing
EP1031963A3 (fr) * 1994-03-10 2000-10-18 CABLE &amp; WIRELESS PLC Système de communication
EP1032189A3 (fr) * 1994-03-10 2000-10-25 CABLE &amp; WIRELESS PLC Système de communication
US6216013B1 (en) 1994-03-10 2001-04-10 Cable & Wireless Plc Communication system with handset for distributed processing
EP0706172A1 (fr) * 1994-10-04 1996-04-10 Hughes Aircraft Company Codeur et décodeur de parole à faible débit binaire
US5832425A (en) * 1994-10-04 1998-11-03 Hughes Electronics Corporation Phoneme recognition and difference signal for speech coding/decoding
US5909662A (en) * 1995-08-11 1999-06-01 Fujitsu Limited Speech processing coder, decoder and command recognizer
WO2001099096A1 (fr) * 2000-06-20 2001-12-27 Sharp Kabushiki Kaisha Systeme de communication a entree vocale, terminal d'utilisateur et systeme central
US7225134B2 (en) 2000-06-20 2007-05-29 Sharp Kabushiki Kaisha Speech input communication system, user terminal and center system
EP1220202A1 (fr) * 2000-12-29 2002-07-03 Alcatel Système et procédé de codage d'informations de parole dépendantes du locuteur et indépendantes du locuteur

Also Published As

Publication number Publication date
JPH03132797A (ja) 1991-06-06
DE69016568D1 (de) 1995-03-16
EP0423800B1 (fr) 1995-02-01
EP0423800A3 (en) 1992-01-02

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