GB1051421A - Method and apparatus for observing vocal cord wave - Google Patents

Method and apparatus for observing vocal cord wave

Info

Publication number
GB1051421A
GB1051421A GB903364A GB903364A GB1051421A GB 1051421 A GB1051421 A GB 1051421A GB 903364 A GB903364 A GB 903364A GB 903364 A GB903364 A GB 903364A GB 1051421 A GB1051421 A GB 1051421A
Authority
GB
United Kingdom
Prior art keywords
circuit
variations
waveform
tube
timespacing
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.)
Expired
Application number
GB903364A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1051421A publication Critical patent/GB1051421A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90—Pitch determination of speech signals

Landscapes

  • 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)
  • Circuit For Audible Band Transducer (AREA)
  • Eye Examination Apparatus (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

1,051,421. Cathode-ray tube displays. HITACHI Ltd. March 3, 1964 [April 3, 1963], No. 9033/64. Heading H4T. Signals (a1, Fig. 2) derived via a microphone A1 (Fig. 1, not shown), held in the region of the trachea and equalized in a circuit A2 (waveform a2) are displayed on the screen of a cathode-ray tube D against a time base which is triggered at a predetermined instant by a pulse (c). The latter is produced by counting in a circuit C a selected number of the pulses of a train (b1) produced in circuit B1 and the timespacing of which is equal to the period of the cycles of waveform (a1). Additionally, a circuit B 2 is employed to convert pulse train (b1) into a pulse train (b2) having amplitude variations corresponding to the variations in timespacing of (b1), i.e. amplitude variations corresponding to variations in pitch (frequency) of waveform (a1) and such variations are also displayed on the tube, e.g. by employing a dual beam tube. The input to circuit B1 may be replaced by the output of a reference generator E producing frequency modulated waves for calibration purposes. The tube preferably has a long persistence to facilitate direct visions.
GB903364A 1963-04-03 1964-03-03 Method and apparatus for observing vocal cord wave Expired GB1051421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1637263 1963-04-03

Publications (1)

Publication Number Publication Date
GB1051421A true GB1051421A (en) 1966-12-14

Family

ID=11914455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB903364A Expired GB1051421A (en) 1963-04-03 1964-03-03 Method and apparatus for observing vocal cord wave

Country Status (3)

Country Link
US (2) US3345979A (en)
DE (1) DE1191595B (en)
GB (1) GB1051421A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368551A (en) * 1965-10-11 1968-02-13 Curtis D. Hardyck Method for correcting subvocalization
US3837332A (en) * 1971-10-21 1974-09-24 Madison College Foundation Inc Voice-operated gas lamp stroboscopes
DE2304070C3 (en) * 1973-01-27 1982-03-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Speech training device for the deaf or hard of hearing
LU71228A1 (en) * 1974-10-31 1976-03-17
JPS5753525Y2 (en) * 1977-11-14 1982-11-19
US4156423A (en) * 1977-11-14 1979-05-29 Ernest H. Friedman Coronary atherosclerosis diagnostic method
US4986281A (en) * 1984-08-23 1991-01-22 Starkey Laboratories, Inc. Method for obtaining a signal for analyzing human and animal joint functions
US4862503A (en) * 1988-01-19 1989-08-29 Syracuse University Voice parameter extractor using oral airflow
GB9223066D0 (en) * 1992-11-04 1992-12-16 Secr Defence Children's speech training aid
US6109923A (en) * 1995-05-24 2000-08-29 Syracuase Language Systems Method and apparatus for teaching prosodic features of speech
US6850882B1 (en) 2000-10-23 2005-02-01 Martin Rothenberg System for measuring velar function during speech

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245403A (en) * 1966-04-12 System for acoustic detection of pathologic larynges
US3076932A (en) * 1963-02-05 Amplifier
US2705742A (en) * 1951-09-15 1955-04-05 Bell Telephone Labor Inc High speed continuous spectrum analysis
US3024783A (en) * 1958-01-21 1962-03-13 Timcke Rolf Vibration therapy apparatus

Also Published As

Publication number Publication date
USRE26600E (en) 1969-06-03
DE1191595B (en) 1965-04-22
US3345979A (en) 1967-10-10

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