JPS64895A - Directional microphone - Google Patents

Directional microphone

Info

Publication number
JPS64895A
JPS64895A JP62155896A JP15589687A JPS64895A JP S64895 A JPS64895 A JP S64895A JP 62155896 A JP62155896 A JP 62155896A JP 15589687 A JP15589687 A JP 15589687A JP S64895 A JPS64895 A JP S64895A
Authority
JP
Japan
Prior art keywords
microphone
directivity
output
phase
phase shifter
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.)
Pending
Application number
JP62155896A
Other languages
English (en)
Other versions
JPH01895A (ja
Inventor
Michio Matsumoto
Satoru Ibaraki
Katsunori Fujimura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62155896A priority Critical patent/JPS64895A/ja
Publication of JPH01895A publication Critical patent/JPH01895A/ja
Publication of JPS64895A publication Critical patent/JPS64895A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Circuit For Audible Band Transducer (AREA)
JP62155896A 1987-06-23 1987-06-23 Directional microphone Pending JPS64895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62155896A JPS64895A (en) 1987-06-23 1987-06-23 Directional microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62155896A JPS64895A (en) 1987-06-23 1987-06-23 Directional microphone

Publications (2)

Publication Number Publication Date
JPH01895A JPH01895A (ja) 1989-01-05
JPS64895A true JPS64895A (en) 1989-01-05

Family

ID=15615875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62155896A Pending JPS64895A (en) 1987-06-23 1987-06-23 Directional microphone

Country Status (1)

Country Link
JP (1) JPS64895A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470200A (ja) * 1990-07-10 1992-03-05 Hitachi Plant Eng & Constr Co Ltd 電子消音システム
US5506908A (en) * 1994-06-30 1996-04-09 At&T Corp. Directional microphone system
JP2002253543A (ja) * 2001-03-01 2002-09-10 Hitachi Medical Corp Ｘ線ｃｔ装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470200A (ja) * 1990-07-10 1992-03-05 Hitachi Plant Eng & Constr Co Ltd 電子消音システム
US5506908A (en) * 1994-06-30 1996-04-09 At&T Corp. Directional microphone system
JP2002253543A (ja) * 2001-03-01 2002-09-10 Hitachi Medical Corp Ｘ線ｃｔ装置

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