JPS56166432A - Measurement of sound transmission matrix in pipeline - Google Patents

Measurement of sound transmission matrix in pipeline

Info

Publication number
JPS56166432A
JPS56166432A JP6956780A JP6956780A JPS56166432A JP S56166432 A JPS56166432 A JP S56166432A JP 6956780 A JP6956780 A JP 6956780A JP 6956780 A JP6956780 A JP 6956780A JP S56166432 A JPS56166432 A JP S56166432A
Authority
JP
Japan
Prior art keywords
pipeline
transmission matrix
measurement
sound transmission
transmission
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
JP6956780A
Other languages
Japanese (ja)
Inventor
Masaharu Nishimura
Satoshi Fukatsu
Kazuo Izumiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP6956780A priority Critical patent/JPS56166432A/en
Publication of JPS56166432A publication Critical patent/JPS56166432A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H15/00—Measuring mechanical or acoustic impedance

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Exhaust Silencers (AREA)

Abstract

PURPOSE:To measure a sound transmission matrix at a better accuracy based on a pipeline impedance and a sound pressure transmission function when a attachment pipeline is connected to a sampling pipeline or not. CONSTITUTION:Four microphones m1-m4 are mounted before and after a sampling pipeline A. Transmission functions of the microphones m1 and m2, m3 and m4 and m3 and m1 are measured with a Fourier analyzer 1 with or without an attachment pipeline A' to be connected and memorized in a computer 2. Based on the transmission functions, a transmission matrix is calculated with a computer and outputted to a plotter 3.
JP6956780A 1980-05-27 1980-05-27 Measurement of sound transmission matrix in pipeline Pending JPS56166432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6956780A JPS56166432A (en) 1980-05-27 1980-05-27 Measurement of sound transmission matrix in pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6956780A JPS56166432A (en) 1980-05-27 1980-05-27 Measurement of sound transmission matrix in pipeline

Publications (1)

Publication Number Publication Date
JPS56166432A true JPS56166432A (en) 1981-12-21

Family

ID=13406476

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6956780A Pending JPS56166432A (en) 1980-05-27 1980-05-27 Measurement of sound transmission matrix in pipeline

Country Status (1)

Country Link
JP (1) JPS56166432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014509390A (en) * 2011-02-03 2014-04-17 インフィコン， インコーポレイテッド A method for determining multilayer thin film deposition on piezoelectric crystals.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014509390A (en) * 2011-02-03 2014-04-17 インフィコン， インコーポレイテッド A method for determining multilayer thin film deposition on piezoelectric crystals.

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