JPS54140625A - Acoustic signal generation system - Google Patents

Acoustic signal generation system

Info

Publication number
JPS54140625A
JPS54140625A JP4655578A JP4655578A JPS54140625A JP S54140625 A JPS54140625 A JP S54140625A JP 4655578 A JP4655578 A JP 4655578A JP 4655578 A JP4655578 A JP 4655578A JP S54140625 A JPS54140625 A JP S54140625A
Authority
JP
Japan
Prior art keywords
signal generation
generation system
acoustic signal
acoustic
signal
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
JP4655578A
Other languages
Japanese (ja)
Inventor
Akira Hosoi
Takao Obara
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 Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP4655578A priority Critical patent/JPS54140625A/en
Publication of JPS54140625A publication Critical patent/JPS54140625A/en
Pending legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)
JP4655578A 1978-04-21 1978-04-21 Acoustic signal generation system Pending JPS54140625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4655578A JPS54140625A (en) 1978-04-21 1978-04-21 Acoustic signal generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4655578A JPS54140625A (en) 1978-04-21 1978-04-21 Acoustic signal generation system

Publications (1)

Publication Number Publication Date
JPS54140625A true JPS54140625A (en) 1979-11-01

Family

ID=12750561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4655578A Pending JPS54140625A (en) 1978-04-21 1978-04-21 Acoustic signal generation system

Country Status (1)

Country Link
JP (1) JPS54140625A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752991A (en) * 1980-09-17 1982-03-29 Toshiba Electric Equip Warning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752991A (en) * 1980-09-17 1982-03-29 Toshiba Electric Equip Warning device

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