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
Links
- 238000009413 insulation Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
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)
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.
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)
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 |
-
1988
- 1988-06-20 JP JP8140688U patent/JPH022666U/ja active Pending
Cited By (2)
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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