JPS5570723A - Listening monitor - Google Patents

Listening monitor

Info

Publication number
JPS5570723A
JPS5570723A JP14447478A JP14447478A JPS5570723A JP S5570723 A JPS5570723 A JP S5570723A JP 14447478 A JP14447478 A JP 14447478A JP 14447478 A JP14447478 A JP 14447478A JP S5570723 A JPS5570723 A JP S5570723A
Authority
JP
Japan
Prior art keywords
control section
abnormal sound
unit
signal
wire
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
JP14447478A
Other languages
Japanese (ja)
Inventor
Yasuhiro Nakajima
Masazumi Watanabe
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14447478A priority Critical patent/JPS5570723A/en
Publication of JPS5570723A publication Critical patent/JPS5570723A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To avoid noise from the speaker at all times and useless use of recording paper, by adding the part detecting abnormal sound and the part controlling it to the listening monitor.
CONSTITUTION: The sound made from the unit 1 is converted into electric signal with the microphone 2 and this is delivered to the amplifier 4 through the wire 3. After this signal is amplified with the amplifier 4, the signal of respective waveform is fed to the failure detection section 10 via the wire 9 and the waveform are converted into rectangular wave signals. Only when the rectangular waveform of abnormal sound is detected other than the rectangular waveforms of normal tone, the detection signal is fed to the control section 11 via the wire 14 from the abnormal tone detection section 10 and the control section 11 starts operation with this. With the operation of the control section 11, the speaker 7 broadcasts abnormal sound, the recorder 8 records abnormal sound, and the listenging objective unit control section 13 outputs the display of unit stop to tell the operator the failure of the unit 1.
COPYRIGHT: (C)1980,JPO&Japio
JP14447478A 1978-11-21 1978-11-21 Listening monitor Pending JPS5570723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14447478A JPS5570723A (en) 1978-11-21 1978-11-21 Listening monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14447478A JPS5570723A (en) 1978-11-21 1978-11-21 Listening monitor

Publications (1)

Publication Number Publication Date
JPS5570723A true JPS5570723A (en) 1980-05-28

Family

ID=15363129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14447478A Pending JPS5570723A (en) 1978-11-21 1978-11-21 Listening monitor

Country Status (1)

Country Link
JP (1) JPS5570723A (en)

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