JPH022666U - - Google Patents

Info

Publication number
JPH022666U
JPH022666U JP8140688U JP8140688U JPH022666U JP H022666 U JPH022666 U JP H022666U JP 8140688 U JP8140688 U JP 8140688U JP 8140688 U JP8140688 U JP 8140688U JP H022666 U JPH022666 U JP H022666U
Authority
JP
Japan
Prior art keywords
sound
microphone
amplifier
filter
attenuator
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
JP8140688U
Other languages
Japanese (ja)
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 JP8140688U priority Critical patent/JPH022666U/ja
Publication of JPH022666U publication Critical patent/JPH022666U/ja
Pending legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Description

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

第１図は本考案の遮音度測定装置の一実施例を
示す概略図、第２図は従来例を示す概略図である
。 １……被測定物、２……増幅器、３……スピー
カ、４……マイクロホン、５……可変減衰器、６
……オシロスコープ、７……フイルタ、８……レ
ベルメータ、９……ピンクノイズ発振器。 FIG. 1 is a schematic diagram showing an embodiment of the sound insulation degree measuring device of the present invention, and FIG. 2 is a schematic diagram showing a conventional example. 1...Object to be measured, 2...Amplifier, 3...Speaker, 4...Microphone, 5...Variable attenuator, 6
...Oscilloscope, 7...Filter, 8...Level meter, 9...Pink noise oscillator.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 音を収音するマイクロホンと、このマイクロホ
ンに収音された音の振幅を変換する減衰器と、音
の振幅を検出する検出器と、前記減衰器に接続さ
れ、音の周波数帯域を制限するフイルタと、この
フイルタの出力を増幅する増幅器と、この増幅器
の出力を放射するスピーカとにより構成され、前
記マイクロホンとスピーカとを被測定物を介して
対向させてハウリングを起こさせることにより、
遮音度を測定するようにしたことを特徴とする遮
音度測定装置。 A microphone that picks up sound, an attenuator that converts the amplitude of the sound picked up by the microphone, a detector that detects the amplitude of the sound, and a filter that is connected to the attenuator and limits the frequency band of the sound. , an amplifier that amplifies the output of this filter, and a speaker that radiates the output of this amplifier, and by making the microphone and the speaker face each other through the object to be measured to cause howling,
A sound insulation degree measuring device characterized by measuring a sound insulation degree.
JP8140688U 1988-06-20 1988-06-20 Pending JPH022666U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8140688U JPH022666U (en) 1988-06-20 1988-06-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8140688U JPH022666U (en) 1988-06-20 1988-06-20

Publications (1)

Publication Number Publication Date
JPH022666U true JPH022666U (en) 1990-01-09

Family

ID=31306188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8140688U Pending JPH022666U (en) 1988-06-20 1988-06-20

Country Status (1)

Country Link
JP (1) JPH022666U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982354U (en) * 1972-11-06 1974-07-17
JP2009216585A (en) * 2008-03-11 2009-09-24 Hitachi Information & Communication Engineering Ltd System and method for measuring pipe length

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982354U (en) * 1972-11-06 1974-07-17
JP2009216585A (en) * 2008-03-11 2009-09-24 Hitachi Information & Communication Engineering Ltd System and method for measuring pipe length

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