JPS54109704A - Outdoor loudspeaker system - Google Patents

Outdoor loudspeaker system

Info

Publication number
JPS54109704A
JPS54109704A JP1672378A JP1672378A JPS54109704A JP S54109704 A JPS54109704 A JP S54109704A JP 1672378 A JP1672378 A JP 1672378A JP 1672378 A JP1672378 A JP 1672378A JP S54109704 A JPS54109704 A JP S54109704A
Authority
JP
Japan
Prior art keywords
wind
speaker
meter
point
velocity
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
JP1672378A
Other languages
Japanese (ja)
Inventor
Tomoyasu Mashita
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP1672378A priority Critical patent/JPS54109704A/en
Publication of JPS54109704A publication Critical patent/JPS54109704A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure the clear listening of the voice both in the windless and windy states by measuring and detecting the wind velocity and direction via the wind meter and thus controlling the electric power to be applied to the speaker.
CONSTITUTION: Wind meter 7 is located at an optional point E within broadcast area A to measure and detect the wind velocity and direction. Both the velocity and direction of the wind measured through meter 7 are converted into the electric signals through converter 8 and then supplied to control means 9. These electric signals are then mixed with the broadcast signals which are supplied to means 9 via microphone 10 with adjustment. Thus, the control is given to the electric power to be applied to speaker 1 of point S as well as to speaker 2 of point S respectively. As a result, a constant sound pressure level expnads uniformly both in the windy and windless states, avoiding the nonaudible or hard-to-listening state.
COPYRIGHT: (C)1979,JPO&Japio
JP1672378A 1978-02-16 1978-02-16 Outdoor loudspeaker system Pending JPS54109704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1672378A JPS54109704A (en) 1978-02-16 1978-02-16 Outdoor loudspeaker system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1672378A JPS54109704A (en) 1978-02-16 1978-02-16 Outdoor loudspeaker system

Publications (1)

Publication Number Publication Date
JPS54109704A true JPS54109704A (en) 1979-08-28

Family

ID=11924177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1672378A Pending JPS54109704A (en) 1978-02-16 1978-02-16 Outdoor loudspeaker system

Country Status (1)

Country Link
JP (1) JPS54109704A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013239959A (en) * 2012-05-16 2013-11-28 Fujitsu General Ltd Disaster prevention radio system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013239959A (en) * 2012-05-16 2013-11-28 Fujitsu General Ltd Disaster prevention radio system

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