JPH024149U - - Google Patents

Info

Publication number
JPH024149U
JPH024149U JP5102688U JP5102688U JPH024149U JP H024149 U JPH024149 U JP H024149U JP 5102688 U JP5102688 U JP 5102688U JP 5102688 U JP5102688 U JP 5102688U JP H024149 U JPH024149 U JP H024149U
Authority
JP
Japan
Prior art keywords
speaker
receives
input
output
duct
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
JP5102688U
Other languages
Japanese (ja)
Other versions
JPH0522740Y2 (en
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 filed Critical
Priority to JP1988051026U priority Critical patent/JPH0522740Y2/ja
Publication of JPH024149U publication Critical patent/JPH024149U/ja
Application granted granted Critical
Publication of JPH0522740Y2 publication Critical patent/JPH0522740Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Duct Arrangements (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案実施例のブロツク図、第２図
〜第６図は他の実施例の要部断面図、第７図は従
来例を説明するブロツク図である。 １：ダクト、２：マイクロホン、３：デジタル
フイルター、４：増幅器、５：スピーカ。 FIG. 1 is a block diagram of an embodiment of this invention, FIGS. 2 to 6 are sectional views of main parts of other embodiments, and FIG. 7 is a block diagram illustrating a conventional example. 1: Duct, 2: Microphone, 3: Digital filter, 4: Amplifier, 5: Speaker.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ダクト１に配置したマイクロホンと、当該マイ
クロホン１の出力を入力とするデジタルフイルー
タ３と、当該デジタルフイルター３の出力を入力
とする増幅器４と、当該増幅器４出力を入力とす
るスピーカ５であつて、当該スピーカが放射方向
がダクト１内に向くように配置され、かつ前記ス
ピーカ５の振動板前後空間を連通する手段を具備
することを特徴とする電子消音用スピーカ装置。 A microphone arranged in a duct 1, a digital filter 3 which receives the output of the microphone 1 as an input, an amplifier 4 which receives the output of the digital filter 3 as an input, and a speaker 5 which receives the output of the amplifier 4 as an input. An electronic silencing speaker device, characterized in that the speaker is arranged so that its radiation direction faces inside the duct 1, and is provided with means for communicating the space before and after the diaphragm of the speaker 5.
JP1988051026U 1987-10-20 1988-04-15 Expired - Lifetime JPH0522740Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988051026U JPH0522740Y2 (en) 1987-10-20 1988-04-15

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16059987 1987-10-20
JP1988051026U JPH0522740Y2 (en) 1987-10-20 1988-04-15

Publications (2)

Publication Number Publication Date
JPH024149U true JPH024149U (en) 1990-01-11
JPH0522740Y2 JPH0522740Y2 (en) 1993-06-11

Family

ID=31718061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988051026U Expired - Lifetime JPH0522740Y2 (en) 1987-10-20 1988-04-15

Country Status (1)

Country Link
JP (1) JPH0522740Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544985A (en) * 1990-12-19 1993-02-23 Gold Star Co Ltd Method and device for preventing noise of indoor machine of separation indoor air conditioner package
JP2013087773A (en) * 2011-10-14 2013-05-13 J Eberspecher Gmbh & Co Kg Active sound absorber

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62164400A (en) * 1986-01-14 1987-07-21 Hitachi Plant Eng & Constr Co Ltd Electronic silencer system
JPS6345599U (en) * 1986-09-12 1988-03-28

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5772174A (en) * 1981-07-27 1982-05-06 Canon Inc Image forming device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62164400A (en) * 1986-01-14 1987-07-21 Hitachi Plant Eng & Constr Co Ltd Electronic silencer system
JPS6345599U (en) * 1986-09-12 1988-03-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544985A (en) * 1990-12-19 1993-02-23 Gold Star Co Ltd Method and device for preventing noise of indoor machine of separation indoor air conditioner package
JP2013087773A (en) * 2011-10-14 2013-05-13 J Eberspecher Gmbh & Co Kg Active sound absorber
US9206717B2 (en) 2011-10-14 2015-12-08 Eberspaecher Exhaust Technology Gmbh & Co. Kg Active sound absorbers

Also Published As

Publication number Publication date
JPH0522740Y2 (en) 1993-06-11

Similar Documents

Publication Publication Date Title
JPS62141293U (en)
JPH024149U (en)
JPS58147382U (en) headphone
JPS5816920U (en) audio output device
JPS6440992U (en)
JPS609397U (en) Headphone that allows you to hear high-quality sound from the front
JPS6160544U (en)
JPS6234900U (en)
JPS63171091U (en)
JPS5912197U (en) Silencer
JPH0167900U (en)
JPS6121189U (en) headphone with clock
JPS5810139U (en) voice input device
JPS59111352U (en) Telephone listening volume amplification device
JPS591300U (en) ceramic speaker
JPS63163090U (en)
JPS58127789U (en) Diaphragm for electroacoustic transducer
JPS60184391U (en) speaker
JPH01143594U (en)
JPS58125490U (en) speaker
JPS5939600U (en) hearing aid
JPS58129549U (en) terminal device
JPS60145726U (en) Control device
JPS58125491U (en) speaker
JPS59157356U (en) Volume adjustment device for handset