HK59879A - Visual audio frequency comparator - Google Patents

Visual audio frequency comparator

Info

Publication number
HK59879A
HK59879A HK598/79A HK59879A HK59879A HK 59879 A HK59879 A HK 59879A HK 598/79 A HK598/79 A HK 598/79A HK 59879 A HK59879 A HK 59879A HK 59879 A HK59879 A HK 59879A
Authority
HK
Hong Kong
Prior art keywords
audio frequency
frequency comparator
visual audio
visual
comparator
Prior art date
Application number
HK598/79A
Other languages
English (en)
Inventor
T V Lester
D C Ryon
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of HK59879A publication Critical patent/HK59879A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/28—Circuits for simultaneous or sequential presentation of more than one variable
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/44—Tuning means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Auxiliary Devices For Music (AREA)
HK598/79A 1973-09-17 1979-08-23 Visual audio frequency comparator HK59879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US398027A US3876936A (en) 1973-09-17 1973-09-17 Visual audio frequency comparator

Publications (1)

Publication Number Publication Date
HK59879A true HK59879A (en) 1979-08-31

Family

ID=23573700

Family Applications (1)

Application Number Title Priority Date Filing Date
HK598/79A HK59879A (en) 1973-09-17 1979-08-23 Visual audio frequency comparator

Country Status (5)

Country Link
US (1) US3876936A (xx)
JP (1) JPS5057674A (xx)
DE (1) DE2444402A1 (xx)
GB (1) GB1432286A (xx)
HK (1) HK59879A (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256008A (en) * 1979-05-17 1981-03-17 Motorola, Inc. Musical instrument tuner with incremental scale shift
US4648113A (en) * 1985-09-11 1987-03-03 Tektronix, Inc. Method and apparatus for providing a visual indication of a relationship between two signals
US4677481A (en) * 1986-03-17 1987-06-30 Tektronix, Inc. Dual display monitor
US5563358A (en) * 1991-12-06 1996-10-08 Zimmerman; Thomas G. Music training apparatus
US5287789A (en) * 1991-12-06 1994-02-22 Zimmerman Thomas G Music training apparatus
US5719343A (en) * 1996-06-14 1998-02-17 Reyburn Piano Service, Inc. Digital aural musical instrument tuning
US6271620B1 (en) 1999-05-20 2001-08-07 Sen Corporation Acoustic transducer and method of making the same
EP1739653B1 (en) * 2005-06-28 2015-09-23 Yamaha Corporation Tuning device for musical instruments and computer program for the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074054A (en) * 1960-11-16 1963-01-15 American District Telegraph Co Electrical system and method for protecting premises subject to varying ambient conditions
US3287639A (en) * 1964-10-08 1966-11-22 Marion L Vail Precision a. c. phase sensor

Also Published As

Publication number Publication date
JPS5057674A (xx) 1975-05-20
US3876936A (en) 1975-04-08
DE2444402A1 (de) 1975-03-20
GB1432286A (en) 1976-04-14

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