JPS54109704A - Outdoor loudspeaker system - Google Patents
Outdoor loudspeaker systemInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013239959A (en) * | 2012-05-16 | 2013-11-28 | Fujitsu General Ltd | Disaster prevention radio system |
-
1978
- 1978-02-16 JP JP1672378A patent/JPS54109704A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013239959A (en) * | 2012-05-16 | 2013-11-28 | Fujitsu General Ltd | Disaster prevention radio system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57136811A (en) | Automatic controller of sound volume | |
JPS52153034A (en) | Electric air-fuel ratio controlling device | |
JPS5434225A (en) | Microphone device | |
JPS54109704A (en) | Outdoor loudspeaker system | |
JPS54109705A (en) | Outdoor loudspeaker system | |
JPS54161868A (en) | Automatic sound volume controller | |
JPS56103600A (en) | Control system for outdoor-use loudspeaker sound area | |
JPS5546182A (en) | Flaw signal generation unit for adjustment for eddy current flaw detector | |
JPS5319540A (en) | Collective control system in power system | |
JPS53144649A (en) | Auto-spanning circuit | |
JPS54139587A (en) | Measuring method of acoustic characteristics | |
JPS5242176A (en) | Method of measuring direction and speed of wind | |
JPS54664A (en) | Electromagnetic flow meter | |
JPS6442942A (en) | Outdoor slave station equipment output detection system | |
JPS51123546A (en) | Power amplifier | |
JPS53134493A (en) | Electrolyte measuring system | |
JPS579200A (en) | Controller for feeling of sound image interval | |
JPS5788329A (en) | Measuring device for acoustic characteristic | |
JPS5437448A (en) | Overload detecting circuit of power amplifier | |
JPS5379453A (en) | Automatic gain control system | |
JPS5751966A (en) | Wind power generation controlling apparatus | |
JPS5439118A (en) | Musical sound signal converting device | |
JPS5335591A (en) | Sound diagnosing apparatus | |
JPS5610226A (en) | Water leakage detector | |
JPS5296524A (en) | Automatic accompaniment apparatus |