JPS5663221A - Measuring device for transmission factor of sound for wall face - Google Patents
Measuring device for transmission factor of sound for wall faceInfo
- Publication number
- JPS5663221A JPS5663221A JP13839679A JP13839679A JPS5663221A JP S5663221 A JPS5663221 A JP S5663221A JP 13839679 A JP13839679 A JP 13839679A JP 13839679 A JP13839679 A JP 13839679A JP S5663221 A JPS5663221 A JP S5663221A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- wall
- transmission factor
- microphone
- measured
- 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
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To realize an accurate measurement for the transmission factor of the wall to be measured, by isolating the sound generated at the site from the test sound produced for measurement of the transmission factor via the correlation method and then giving a distinction between the sound passed through the wall to be measured and the sound propagated through other route.
CONSTITUTION: The speaker 2 and the microphone 3 are installed in opposition to each other across the wall 1 to be measured while centering the wall 1. In such conditions, both the M-series pseudo random signal generator 6 and the period signal generator 7 are operated. Thus the acoustic signal having a frequency of 2n/h is transmitted from the speaker 2 with every period during which the pseudo random pulse is transmitted, and a part of the acoustic signal propagates to the microphone 3 after transmitting through the wall 1. The output signal supplied from the microphone 3 is squared by the data processor 9, thus the noise at the site or the noise given from ohter route being erased. Then the value corresponding to the square of the transmitted sound is displayed on the data processor 9.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13839679A JPS5663221A (en) | 1979-10-26 | 1979-10-26 | Measuring device for transmission factor of sound for wall face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13839679A JPS5663221A (en) | 1979-10-26 | 1979-10-26 | Measuring device for transmission factor of sound for wall face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5663221A true JPS5663221A (en) | 1981-05-29 |
Family
ID=15220959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13839679A Pending JPS5663221A (en) | 1979-10-26 | 1979-10-26 | Measuring device for transmission factor of sound for wall face |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5663221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100435639B1 (en) * | 2000-11-20 | 2004-06-12 | 현대자동차주식회사 | Apparatus for measuring sand noise |
| JP2017003276A (en) * | 2015-06-04 | 2017-01-05 | 鹿島建設株式会社 | Acoustic performance estimation method, acoustic performance estimation device, and acoustic performance estimation program |
-
1979
- 1979-10-26 JP JP13839679A patent/JPS5663221A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100435639B1 (en) * | 2000-11-20 | 2004-06-12 | 현대자동차주식회사 | Apparatus for measuring sand noise |
| JP2017003276A (en) * | 2015-06-04 | 2017-01-05 | 鹿島建設株式会社 | Acoustic performance estimation method, acoustic performance estimation device, and acoustic performance estimation program |
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