JPS5799047A - Loudspeaking radio device - Google Patents

Loudspeaking radio device

Info

Publication number
JPS5799047A
JPS5799047A JP17554080A JP17554080A JPS5799047A JP S5799047 A JPS5799047 A JP S5799047A JP 17554080 A JP17554080 A JP 17554080A JP 17554080 A JP17554080 A JP 17554080A JP S5799047 A JPS5799047 A JP S5799047A
Authority
JP
Japan
Prior art keywords
circuit
noise
broadcast
sampling
stored
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
JP17554080A
Other languages
Japanese (ja)
Inventor
Masakatsu Tamura
Toshio Koyama
Kunio Akiba
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP17554080A priority Critical patent/JPS5799047A/en
Publication of JPS5799047A publication Critical patent/JPS5799047A/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
    • H04R27/00—Public address systems
    • H04R27/04—Electric megaphones

Abstract

PURPOSE:To enable loundspeaking broadcast with a suitable sound volume for a broadcast district without the operation to a loudspeaker receiver at a base station side. CONSTITUTION:After noise through a microphone 1 is amplified at an amplifier 2, correction according to the frequency characteristics of ears is made at a frequency correction circuit 3, and the noise is detected at a detection circuit 4 and stored in sampling hold circuits 5-7. The sampling of noise is made for a minute time t1 with a timer circuit 8 and stored for a specified time t2. This operation is repetitively made at a time where no broadcast signal is present. When a broadcast signal from a base station is received at an antenna 18, amplified at a high frequency reception section 16 and detected at a detection circuit 17, the noise sampling is stopped, the output of sampling hold circuits 5-7 is stored in a sampling hold circuit 11 through an average circuit 9 and log circuit 10, to operate a voltage control attenuator 13 for the adjustment of sound volume of broadcast.
JP17554080A 1980-12-11 1980-12-11 Loudspeaking radio device Pending JPS5799047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17554080A JPS5799047A (en) 1980-12-11 1980-12-11 Loudspeaking radio device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17554080A JPS5799047A (en) 1980-12-11 1980-12-11 Loudspeaking radio device

Publications (1)

Publication Number Publication Date
JPS5799047A true JPS5799047A (en) 1982-06-19

Family

ID=15997856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17554080A Pending JPS5799047A (en) 1980-12-11 1980-12-11 Loudspeaking radio device

Country Status (1)

Country Link
JP (1) JPS5799047A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010537483A (en) * 2007-08-16 2010-12-02 トムソン ライセンシング Network audio processor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50134312A (en) * 1974-04-09 1975-10-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50134312A (en) * 1974-04-09 1975-10-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010537483A (en) * 2007-08-16 2010-12-02 トムソン ライセンシング Network audio processor
US8755532B2 (en) 2007-08-16 2014-06-17 Thomson Licensing Network audio processor

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