JPS5635596A - Variable directional microphone - Google Patents

Variable directional microphone

Info

Publication number
JPS5635596A
JPS5635596A JP11907980A JP11907980A JPS5635596A JP S5635596 A JPS5635596 A JP S5635596A JP 11907980 A JP11907980 A JP 11907980A JP 11907980 A JP11907980 A JP 11907980A JP S5635596 A JPS5635596 A JP S5635596A
Authority
JP
Japan
Prior art keywords
directivity
pressure gradient
mixing ratio
sound pressure
primary
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
JP11907980A
Other languages
Japanese (ja)
Other versions
JPS6159598B2 (en
Inventor
Tadahide Momose
Atsushi Yumoto
Naotaka Miyaji
Hiroshi Ogawa
Isamu Nomoto
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP11907980A priority Critical patent/JPS5635596A/en
Publication of JPS5635596A publication Critical patent/JPS5635596A/en
Publication of JPS6159598B2 publication Critical patent/JPS6159598B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To ensure the variation of the directivity from the primary and secondary sound pressure gradient single directivity, by providing the two single directional microphones in combination and the mixing the outputs given from each microphone with variation of the mixing ratio. CONSTITUTION:Two units of the primary sound pressure gradient single directional microphones 12a and 12c are arranged with a fixed space secured between and forwardly to the sound source 13. Furthermore, another primary sound pressure gradient single directional microphone 12b is provided backward to the source 13. And the outputs of microphones 12a, 12b, 12c given from these microphones are mixed up, and this mixing ratio is varies by a fixed amount. With control of this mixing ratio, the directivity can be varied from the primary to secondary sound pressure gradient single directivity. In addition, the natural unified feeling can be obtained between the picture and the sound by securing an interlocking between the control of the mixing ratio and the zooming action of the 8mm. camera or the like.
JP11907980A 1980-08-29 1980-08-29 Variable directional microphone Granted JPS5635596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11907980A JPS5635596A (en) 1980-08-29 1980-08-29 Variable directional microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11907980A JPS5635596A (en) 1980-08-29 1980-08-29 Variable directional microphone

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP54051691A Division JPS5910119B2 (en) 1979-04-26 1979-04-26 variable directional microphone

Publications (2)

Publication Number Publication Date
JPS5635596A true JPS5635596A (en) 1981-04-08
JPS6159598B2 JPS6159598B2 (en) 1986-12-17

Family

ID=14752350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11907980A Granted JPS5635596A (en) 1980-08-29 1980-08-29 Variable directional microphone

Country Status (1)

Country Link
JP (1) JPS5635596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8170260B2 (en) 2005-06-23 2012-05-01 Akg Acoustics Gmbh System for determining the position of sound sources

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046122A (en) * 1973-08-28 1975-04-24
JPS50127631A (en) * 1974-03-14 1975-10-07
JPS5127317A (en) * 1974-08-31 1976-03-06 Tokyo Shibaura Electric Co KAHENSHIKOSEIMAIKUROPPON SOCHI

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046122A (en) * 1973-08-28 1975-04-24
JPS50127631A (en) * 1974-03-14 1975-10-07
JPS5127317A (en) * 1974-08-31 1976-03-06 Tokyo Shibaura Electric Co KAHENSHIKOSEIMAIKUROPPON SOCHI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8170260B2 (en) 2005-06-23 2012-05-01 Akg Acoustics Gmbh System for determining the position of sound sources

Also Published As

Publication number Publication date
JPS6159598B2 (en) 1986-12-17

Similar Documents

Publication Publication Date Title
JPS55143896A (en) Variable directional microphone
JPS5434225A (en) Microphone device
JPS5393816A (en) Diaphragm of speaker
GB2064267B (en) Microphone sound inlets
JPS5635596A (en) Variable directional microphone
JPS5364018A (en) Speaker system
JPS5650698A (en) Variable directivity microphone
JPS56104597A (en) Variably directional microphone
JPS5561197A (en) Electric-acoustic mutual converter
JPS5574292A (en) Speaker system of constant directionality
JPS51122425A (en) Speaker system
JPS5267301A (en) Acoustic signal reproduction device
JPS52139402A (en) Reverberation adding system
JPS5744394A (en) Stereophonic zoom microphone
JPS5494001A (en) Car stereo
JPS6460069A (en) Video device
JPS5666996A (en) Variable directional microphone
JPS52102020A (en) Speaker system
JPS52143705A (en) Telephone with variable reception audio sound
JPS5334514A (en) Horn speaker
JPS5427343A (en) Magic t
JPS53116102A (en) Acoustic reproducer
JPS5582502A (en) Adjusting unit for directivity of antenna
JPS5369024A (en) Speaker
JPS5352312A (en) Color tone control device