JPS56169439A - Noise suppressing circuit for fm receiver - Google Patents

Noise suppressing circuit for fm receiver

Info

Publication number
JPS56169439A
JPS56169439A JP7269580A JP7269580A JPS56169439A JP S56169439 A JPS56169439 A JP S56169439A JP 7269580 A JP7269580 A JP 7269580A JP 7269580 A JP7269580 A JP 7269580A JP S56169439 A JPS56169439 A JP S56169439A
Authority
JP
Japan
Prior art keywords
noise
circuit
output
agc
path
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.)
Granted
Application number
JP7269580A
Other languages
Japanese (ja)
Other versions
JPS6243574B2 (en
Inventor
Eiji Ueno
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP7269580A priority Critical patent/JPS56169439A/en
Publication of JPS56169439A publication Critical patent/JPS56169439A/en
Publication of JPS6243574B2 publication Critical patent/JPS6243574B2/ja
Granted 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 prevent the deterioration of sound quality, by eliminating distortion in as suppressing circuit, in suppressing multi-path noise together with pulsive noise. CONSTITUTION:When no multi-path noise is present and only pulse noise is present, this pulsive noise is detected at a high-pass filter 3, it is amplified at a noise amplifier 4, a monostable multi-vibrator 5 is triggered with the rise of this output, a gate circuit 8 is interrupted while the set time of this multivibrator 5, and no OUT output to a multiplex demodulation circuit is produced. Next, when a multi-path noise is produced, the gain of a noise amplifier 4 is immediately lowered with the operation of an AGC circuit 6, and the monostable multivibrator 5 and the gate circuit 8 are inoperative. An AGC circuit 11 requires time by the AGC operation and a noise amplifier 9 produces an output while this time, a monostable multivibrator 10 is triggered and a gate circuit 12 is in off-state.
JP7269580A 1980-06-02 1980-06-02 Noise suppressing circuit for fm receiver Granted JPS56169439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7269580A JPS56169439A (en) 1980-06-02 1980-06-02 Noise suppressing circuit for fm receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7269580A JPS56169439A (en) 1980-06-02 1980-06-02 Noise suppressing circuit for fm receiver

Publications (2)

Publication Number Publication Date
JPS56169439A true JPS56169439A (en) 1981-12-26
JPS6243574B2 JPS6243574B2 (en) 1987-09-16

Family

ID=13496754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7269580A Granted JPS56169439A (en) 1980-06-02 1980-06-02 Noise suppressing circuit for fm receiver

Country Status (1)

Country Link
JP (1) JPS56169439A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491957A (en) * 1982-08-31 1985-01-01 U.S. Philips Corporation FM-Receiver having multipath reception detector and noise pulse suppression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491957A (en) * 1982-08-31 1985-01-01 U.S. Philips Corporation FM-Receiver having multipath reception detector and noise pulse suppression

Also Published As

Publication number Publication date
JPS6243574B2 (en) 1987-09-16

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