JPH0331320B2 - - Google Patents

Info

Publication number
JPH0331320B2
JPH0331320B2 JP6113983A JP6113983A JPH0331320B2 JP H0331320 B2 JPH0331320 B2 JP H0331320B2 JP 6113983 A JP6113983 A JP 6113983A JP 6113983 A JP6113983 A JP 6113983A JP H0331320 B2 JPH0331320 B2 JP H0331320B2
Authority
JP
Japan
Prior art keywords
transmitter
receiver
signal
waves
sound
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 - Lifetime
Application number
JP6113983A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59186498A (ja
Inventor
Hisashi Kawaomo
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia 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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP6113983A priority Critical patent/JPS59186498A/ja
Publication of JPS59186498A publication Critical patent/JPS59186498A/ja
Publication of JPH0331320B2 publication Critical patent/JPH0331320B2/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
    • H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Circuit For Audible Band Transducer (AREA)
JP6113983A 1983-04-07 1983-04-07 パラメトリツクアレ−マイクロホン Granted JPS59186498A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6113983A JPS59186498A (ja) 1983-04-07 1983-04-07 パラメトリツクアレ−マイクロホン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6113983A JPS59186498A (ja) 1983-04-07 1983-04-07 パラメトリツクアレ−マイクロホン

Publications (2)

Publication Number Publication Date
JPS59186498A JPS59186498A (ja) 1984-10-23
JPH0331320B2 true JPH0331320B2 (enrdf_load_stackoverflow) 1991-05-02

Family

ID=13162455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6113983A Granted JPS59186498A (ja) 1983-04-07 1983-04-07 パラメトリツクアレ−マイクロホン

Country Status (1)

Country Link
JP (1) JPS59186498A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9506725D0 (en) 1995-03-31 1995-05-24 Hooley Anthony Improvements in or relating to loudspeakers
GB0124352D0 (en) 2001-10-11 2001-11-28 1 Ltd Signal processing device for acoustic transducer array
GB0415626D0 (en) * 2004-07-13 2004-08-18 1 Ltd Directional microphone

Also Published As

Publication number Publication date
JPS59186498A (ja) 1984-10-23

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