JPS5725730A - Detecting device of noise intensity - Google Patents

Detecting device of noise intensity

Info

Publication number
JPS5725730A
JPS5725730A JP10072680A JP10072680A JPS5725730A JP S5725730 A JPS5725730 A JP S5725730A JP 10072680 A JP10072680 A JP 10072680A JP 10072680 A JP10072680 A JP 10072680A JP S5725730 A JPS5725730 A JP S5725730A
Authority
JP
Japan
Prior art keywords
signal
voltage
rectified
comparator
intensity
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
JP10072680A
Other languages
Japanese (ja)
Inventor
Kazuo Kimura
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 JP10072680A priority Critical patent/JPS5725730A/en
Publication of JPS5725730A publication Critical patent/JPS5725730A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To ensure an accurate detection of the noise intensity, by giving distinction between the higher harmonic component and the noise of an aural signal. CONSTITUTION:A receiving circuit 2 supplies a received signal (a) converted into an aural band to a filter 3 and also supplies the voltage proportional to the intensity of received electric field to a comparator 11 of an electric field intensity deciding circuit 10. For the signal (a), only the noise component (b) is extracted. Then the signal (a) is rectified through the 1st and 2nd wave detectors 5 and 8 respectively. The voltage rectified through the detector 5 is turned into the input of a switch 15 via a amplifier 6. The voltage rectified through the detector 8 is compared with the reference voltage V1, and the 1st decision signal (f) is delivered through a comparator 9 when the rectified voltage is higher than the voltage V1. On the other hand, a field intensity signal (d) is compared with the reference voltage V2, and 2nd decision signal (g) is delivered through a comparator 11 when the signal (d) is larger than the voltage V2. These two signals (f) and (g) are supplied to an AND circuit 12, and the switch 15 is opened with the AND output.
JP10072680A 1980-07-21 1980-07-21 Detecting device of noise intensity Pending JPS5725730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10072680A JPS5725730A (en) 1980-07-21 1980-07-21 Detecting device of noise intensity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10072680A JPS5725730A (en) 1980-07-21 1980-07-21 Detecting device of noise intensity

Publications (1)

Publication Number Publication Date
JPS5725730A true JPS5725730A (en) 1982-02-10

Family

ID=14281617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10072680A Pending JPS5725730A (en) 1980-07-21 1980-07-21 Detecting device of noise intensity

Country Status (1)

Country Link
JP (1) JPS5725730A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181234U (en) * 1984-10-31 1986-05-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181234U (en) * 1984-10-31 1986-05-29

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