JPS6435495A - Underwater sound shielding plate - Google Patents

Underwater sound shielding plate

Info

Publication number
JPS6435495A
JPS6435495A JP62190339A JP19033987A JPS6435495A JP S6435495 A JPS6435495 A JP S6435495A JP 62190339 A JP62190339 A JP 62190339A JP 19033987 A JP19033987 A JP 19033987A JP S6435495 A JPS6435495 A JP S6435495A
Authority
JP
Japan
Prior art keywords
transmitter
receiver
disturbing
acoustic
reflection plate
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
JP62190339A
Other languages
Japanese (ja)
Other versions
JP2517845B2 (en
Inventor
Tadahiro Noguchi
Takayoshi Hyodo
Kaoru Nakamura
Akihiro Kamei
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.)
Japan Steel Works Ltd
Technical Research and Development Institute of Japan Defence Agency
Yokohama Rubber Co Ltd
Original Assignee
Japan Steel Works Ltd
Technical Research and Development Institute of Japan Defence Agency
Yokohama Rubber Co 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 Japan Steel Works Ltd, Technical Research and Development Institute of Japan Defence Agency, Yokohama Rubber Co Ltd filed Critical Japan Steel Works Ltd
Priority to JP62190339A priority Critical patent/JP2517845B2/en
Publication of JPS6435495A publication Critical patent/JPS6435495A/en
Application granted granted Critical
Publication of JP2517845B2 publication Critical patent/JP2517845B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PURPOSE: To cancel acoustic pressure of a direct wave and a reflected wave of a coming acoustic wave to effectively reduce disturning sounds by providing one or more phase inverting reflection plates in the vicinity of a transmitter-receiver approximately in parallel with the coming direction of disturbing sounds. CONSTITUTION: A phase inverting reflection plate A of a prescribed length is provided approximately in parallel with the coming direction of disturbing sounds Q between a transmitter-receiver S of an underwater acoustic device like a soner transmitter- receiver, a fish detector, depth sounder, or a speaking machine and a disturbing sound source B and in the vicinity of the transmitter-receiver S. This reflection plate A is made of a foamed rubber. Since the reflection plate A is provided between the transmitter-receiver S and the disturbing sound source B approximately in parallel with the coming direction of disturbing sounds Q in this manner, one disturbing sound Q from the sound source B reaches the transmitter-receiver S through a direct route P1, and the other is reflected for phase inversion by the phase inverting reflection plate A and reaches the transmitter-receiver S through a route P2, and acoustic pressures are synthesized, and the synthesized acoustic pressure is the sum of acoustic pressures of routes P1 and P2, and the acoustic pressure is reduced by cancelling.
JP62190339A 1987-07-31 1987-07-31 Underwater sound insulation board Expired - Lifetime JP2517845B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62190339A JP2517845B2 (en) 1987-07-31 1987-07-31 Underwater sound insulation board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62190339A JP2517845B2 (en) 1987-07-31 1987-07-31 Underwater sound insulation board

Publications (2)

Publication Number Publication Date
JPS6435495A true JPS6435495A (en) 1989-02-06
JP2517845B2 JP2517845B2 (en) 1996-07-24

Family

ID=16256550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62190339A Expired - Lifetime JP2517845B2 (en) 1987-07-31 1987-07-31 Underwater sound insulation board

Country Status (1)

Country Link
JP (1) JP2517845B2 (en)

Also Published As

Publication number Publication date
JP2517845B2 (en) 1996-07-24

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