JPS5787300A - Output control system of slave station device - Google Patents

Output control system of slave station device

Info

Publication number
JPS5787300A
JPS5787300A JP16197180A JP16197180A JPS5787300A JP S5787300 A JPS5787300 A JP S5787300A JP 16197180 A JP16197180 A JP 16197180A JP 16197180 A JP16197180 A JP 16197180A JP S5787300 A JPS5787300 A JP S5787300A
Authority
JP
Japan
Prior art keywords
loudspeaker
wind
master station
output
wind 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
JP16197180A
Other languages
Japanese (ja)
Inventor
Tsuneki Takahashi
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP16197180A priority Critical patent/JPS5787300A/en
Publication of JPS5787300A publication Critical patent/JPS5787300A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To make an acoustic area for broadcasting constant at all times, by controlling an output of a loudspeaker for each direction, in accordance with wind direction and wind velocity. CONSTITUTION:When a receiver 1 is operated by an electric wave feom a master station, a data detected by a wind direction and wind velocity detector 5 which is always monitoring is stored in a memory circuit 6, simultaneously it is applied to an each direction level setting device 7, a present output level is set, and input adjusting circuits 8 of each direction loudspeaker 4 is controlled. Subsequently, when a selective calling signal from the master station is selected by a selective calling device 2, an power sources of output amplifiers 3 turn on, by which a sound signal from the master station passes through the receiver 1, amplified up to an output level which has been set through each input adjusting circuit, by the amplifier 3, and is applied to the loudspeaker 4. In this way, an acoustic area for broadcasting is always made constant irrespective of wind direction and wind velocity.
JP16197180A 1980-11-19 1980-11-19 Output control system of slave station device Pending JPS5787300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16197180A JPS5787300A (en) 1980-11-19 1980-11-19 Output control system of slave station device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16197180A JPS5787300A (en) 1980-11-19 1980-11-19 Output control system of slave station device

Publications (1)

Publication Number Publication Date
JPS5787300A true JPS5787300A (en) 1982-05-31

Family

ID=15745556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16197180A Pending JPS5787300A (en) 1980-11-19 1980-11-19 Output control system of slave station device

Country Status (1)

Country Link
JP (1) JPS5787300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012028845A (en) * 2010-07-20 2012-02-09 Nec Corp Public address system and public address method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012028845A (en) * 2010-07-20 2012-02-09 Nec Corp Public address system and public address method

Similar Documents

Publication Publication Date Title
SE7907070L (en) AUTOMATIC VOLUME ADJUSTMENT DEVICE
JPS56147525A (en) Reception playback system
GB1021347A (en) Audio actuated switches
KR970004470A (en) Wireless transmitter
SE8200392L (en) speaker
JPS5787300A (en) Output control system of slave station device
SE7712534L (en) NOISE DETECTOR
JPS61287309A (en) Speaker broadcast system
JPS56103600A (en) Control system for outdoor-use loudspeaker sound area
JPS5379453A (en) Automatic gain control system
JPS56162511A (en) Power amplifier
FR2367325A1 (en) Automatic acoustic surveillance system - has automatic function control and uses common line for surveillance and control signals
GB1427029A (en) Radio receiving apparatus
JPS56136055A (en) Agc system of time-division multidirectional communication
JPS57186900A (en) Acoustic device
JPS5426610A (en) Howling prevention unit
JPS55140311A (en) Sound volume automatic control unit of noise control type speaker
ES286232A1 (en) Installation of exit circuit for railway control systems (Machine-translation by Google Translate, not legally binding)
JPS52110555A (en) Automatic volume control system for car mounting audio device
KR880004640A (en) Speaker Volume Control System
JPS5724110A (en) Automatic sound volume adjusting system
JPS5426611A (en) Howling prevention unit
IT1066352B (en) Sound information reproduction system - has two compressor units connected in series between radio receiver and power amplifier
NL7605907A (en) Sound information reproduction system - has two compressor units connected in series between radio receiver and power amplifier
FR2353899A1 (en) Sound information reproduction system - has two compressor units connected in series between radio receiver and power amplifier