JPS6422814U - - Google Patents

Info

Publication number
JPS6422814U
JPS6422814U JP9917487U JP9917487U JPS6422814U JP S6422814 U JPS6422814 U JP S6422814U JP 9917487 U JP9917487 U JP 9917487U JP 9917487 U JP9917487 U JP 9917487U JP S6422814 U JPS6422814 U JP S6422814U
Authority
JP
Japan
Prior art keywords
intake
exhaust pipe
noise
speaker
exhaust
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
JP9917487U
Other languages
Japanese (ja)
Other versions
JPH0619784Y2 (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 JP9917487U priority Critical patent/JPH0619784Y2/en
Publication of JPS6422814U publication Critical patent/JPS6422814U/ja
Application granted granted Critical
Publication of JPH0619784Y2 publication Critical patent/JPH0619784Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Description

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

第１図は本考案実施例の排気管用アクテイブキ
ヤンセラーシステムを示す全体図、第２図は従来
例を示す全体図である。 １……排気管、３……圧電スピーカ、４……騒
音検出マイク、６……アクテイブキヤンセル制御
手段、７……エンジン、８……エラー検出マイク
、ａ……排気流路、ｂ……内側空間。 FIG. 1 is an overall view showing an active canceller system for an exhaust pipe according to an embodiment of the present invention, and FIG. 2 is an overall view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Exhaust pipe, 3... Piezoelectric speaker, 4... Noise detection microphone, 6... Active cancel control means, 7... Engine, 8... Error detection microphone, a... Exhaust flow path, b... Inside space.

Claims (1)

【実用新案登録請求の範囲】 一端が騒音源であるエンジンに接続され、吸気
もしくは排気の流路が形成された吸排気管と、 該吸排気管の騒音に対して圧力波を重ねること
が可能に設けられたキヤンセルスピーカと、 前記吸排気管系に設けられたマイクから入力し
た信号に基き騒音を監視して所定の制御信号を前
記キヤンセルスピーカに出力するアクテイブキヤ
ンセル制御手段とを備え、 前記吸排気管騒音の圧力波に対して騒音とは逆
位相の粗密圧力波をキヤンセルスピーカから出力
して両圧力波の打ち消し作用により消音を行なう
吸排気管用アクテイブキヤンセラーシステムにお
いて、 前記キヤンセルスピーカをセラミツク製で両端
を開口した筒状の圧電スピーカで形成し、該圧電
スピーカをその内側空間が吸排気の流路を形成す
るよう前記吸排気管の一部として設けたことを特
徴とする吸排気管用アクテイブキヤンセラーシス
テム。[Scope of Claim for Utility Model Registration] An intake/exhaust pipe whose one end is connected to the engine that is the source of noise, and in which an intake or exhaust flow path is formed, and an air intake/exhaust pipe that is provided so as to be able to generate pressure waves in response to the noise of the intake/exhaust pipe. and an active cancel control means for monitoring noise based on a signal input from a microphone provided in the intake and exhaust pipe system and outputting a predetermined control signal to the cancellation speaker, and controlling the noise of the intake and exhaust pipes. In an active canceller system for intake and exhaust pipes, which outputs coarse pressure waves having a phase opposite to that of noise from a cancel speaker and performs noise reduction by canceling both pressure waves, the cancel speaker is made of ceramic and has both ends open. 1. An active canceller system for an intake/exhaust pipe, characterized in that the piezoelectric speaker is formed of a cylindrical piezoelectric speaker, and the piezoelectric speaker is provided as a part of the intake/exhaust pipe so that the inner space thereof forms an intake/exhaust flow path.
JP9917487U 1987-06-26 1987-06-26 Active canceller system for intake and exhaust pipes Expired - Lifetime JPH0619784Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9917487U JPH0619784Y2 (en) 1987-06-26 1987-06-26 Active canceller system for intake and exhaust pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9917487U JPH0619784Y2 (en) 1987-06-26 1987-06-26 Active canceller system for intake and exhaust pipes

Publications (2)

Publication Number Publication Date
JPS6422814U true JPS6422814U (en) 1989-02-07
JPH0619784Y2 JPH0619784Y2 (en) 1994-05-25

Family

ID=31326085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9917487U Expired - Lifetime JPH0619784Y2 (en) 1987-06-26 1987-06-26 Active canceller system for intake and exhaust pipes

Country Status (1)

Country Link
JP (1) JPH0619784Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008534991A (en) * 2005-03-09 2008-08-28 ヒューマン タッチ ソフト シーオー エルティーディー Active noise control method and apparatus using film speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008534991A (en) * 2005-03-09 2008-08-28 ヒューマン タッチ ソフト シーオー エルティーディー Active noise control method and apparatus using film speaker

Also Published As

Publication number Publication date
JPH0619784Y2 (en) 1994-05-25

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