GB2090456A - Sound signal automatic detection and display method and system - Google Patents

Sound signal automatic detection and display method and system

Info

Publication number
GB2090456A
GB2090456A GB8205819A GB8205819A GB2090456A GB 2090456 A GB2090456 A GB 2090456A GB 8205819 A GB8205819 A GB 8205819A GB 8205819 A GB8205819 A GB 8205819A GB 2090456 A GB2090456 A GB 2090456A
Authority
GB
United Kingdom
Prior art keywords
output
filter
vocalist
musician
sound signal
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
GB8205819A
Other versions
GB2090456B (en
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.)
Wright Malta Corp
Original Assignee
Wright Malta Corp
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 Wright Malta Corp filed Critical Wright Malta Corp
Publication of GB2090456A publication Critical patent/GB2090456A/en
Application granted granted Critical
Publication of GB2090456B publication Critical patent/GB2090456B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10G—REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS
    • G10G3/00—Recording music in notation form, e.g. recording the mechanical operation of a musical instrument
    • G10G3/04—Recording music in notation form, e.g. recording the mechanical operation of a musical instrument using electrical means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10G—REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS
    • G10G7/00—Other auxiliary devices or accessories, e.g. conductors' batons or separate holders for resin or strings
    • G10G7/02—Tuning forks or like devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

A sound pitch detection and display system identifies automatically a note being played without requiring assistance from a vocalist or musician. A sound signal transducer (11) detects an input sound wave and supplies it to a filter (13) having bandpass characteristics. The bandpass characteristics of the filter are provided by a high pass filter stage (72) followed by an automatic gain control amplifier (75) that in turn is followed by two stages of low pass filtering (76, 77). The low pass filter stages supply their output to an alternate positive peak voltage and negative peak voltage detector circuit (15, 78) that derives an output representative of the fundamental frequency of the input sound wave being analyzed. The output from the detector circuit is supplied to a microcomputer (16) which processes the signal for display (18) for use by a musician, vocalist or like person for analysis and instruction purposes.
GB8205819A 1980-07-15 1980-07-15 Sound signal automatic detection and display method and system Expired GB2090456B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1980/000873 WO1982000379A1 (en) 1980-07-15 1980-07-15 Sound signal automatic detection and display method and system

Publications (2)

Publication Number Publication Date
GB2090456A true GB2090456A (en) 1982-07-07
GB2090456B GB2090456B (en) 1984-02-15

Family

ID=22154436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8205819A Expired GB2090456B (en) 1980-07-15 1980-07-15 Sound signal automatic detection and display method and system

Country Status (4)

Country Link
JP (1) JPS57501250A (en)
DE (1) DE3050481A1 (en)
GB (1) GB2090456B (en)
WO (1) WO1982000379A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163592A (en) * 1984-08-22 1986-02-26 Yam Hong Chan Music teaching instrument

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8809189D0 (en) * 1988-04-19 1988-05-25 Wisdom P Device
FI20001592A (en) * 2000-07-03 2002-04-11 Elmorex Ltd Oy Generation of a note-based code
CN109935239B (en) * 2019-03-15 2024-03-29 浙江大学城市学院 Automatic metering verification system and recognition algorithm for audio analysis instrument
US11398212B2 (en) * 2020-08-04 2022-07-26 Positive Grid LLC Intelligent accompaniment generating system and method of assisting a user to play an instrument in a system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539701A (en) * 1967-07-07 1970-11-10 Ursula A Milde Electrical musical instrument
US3634596A (en) * 1969-08-27 1972-01-11 Robert E Rupert System for producing musical tones
US3647929A (en) * 1970-10-08 1972-03-07 Karl F Milde Jr Apparatus for reproducing musical notes from an encoded record
US4014237A (en) * 1972-03-01 1977-03-29 Milde Karl F Jr Musical note detecting apparatus
US4024789A (en) * 1973-08-30 1977-05-24 Murli Advani Tone analysis system with visual display
US3926088A (en) * 1974-01-02 1975-12-16 Ibm Apparatus for processing music as data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163592A (en) * 1984-08-22 1986-02-26 Yam Hong Chan Music teaching instrument

Also Published As

Publication number Publication date
JPS57501250A (en) 1982-07-15
GB2090456B (en) 1984-02-15
DE3050481A1 (en) 1982-10-07
WO1982000379A1 (en) 1982-02-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee