JPS5546641A - Display system for interference distortion value caused by multipath disturbance of fm radio wave - Google Patents

Display system for interference distortion value caused by multipath disturbance of fm radio wave

Info

Publication number
JPS5546641A
JPS5546641A JP12003278A JP12003278A JPS5546641A JP S5546641 A JPS5546641 A JP S5546641A JP 12003278 A JP12003278 A JP 12003278A JP 12003278 A JP12003278 A JP 12003278A JP S5546641 A JPS5546641 A JP S5546641A
Authority
JP
Japan
Prior art keywords
signal
19khz
distortion
band
value
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
JP12003278A
Other languages
Japanese (ja)
Other versions
JPS5946451B2 (en
Inventor
Yukinobu Ishigaki
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP53120032A priority Critical patent/JPS5946451B2/en
Publication of JPS5546641A publication Critical patent/JPS5546641A/en
Publication of JPS5946451B2 publication Critical patent/JPS5946451B2/en
Expired 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
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To obtain a reproduction state of high fidelity by obtaining an indication value corresponding to a sense of hearing distortion by extracting only a signal component of approximate 19kHz in a signal outputted by a FM demodulator and then by displaying a multipath distortion value by its variation value. CONSTITUTION:A demodulated signal from FM demodulator 4 is supplied to narrow-band-pass filter BPF1 of 19kHz in center frequency, the output signal of which is supplied to high-gain amplitude limiting amplifier HAL to obtain a square wave of constant amplitude by converting. The output signal of it is applied to narrow-band-pass BPF2 of 19kHz in the center frequency of its passing band, thereby obtaining a sine-wave signal. The output signals of both BPF1 and BPF2 are processed by arithmetic circuit SUB to obtain an interference distortion component, which is converted by signal converter circuit SCC into a signal adequate for driving an indicator, so that indicator M will display its value. Consequently, the interference distortion can quantitatively be displayed which is caused by multipath disturbance of a FM radio wave.
JP53120032A 1978-09-29 1978-09-29 Display method for the amount of interference distortion caused by multipath interference of FM radio waves Expired JPS5946451B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53120032A JPS5946451B2 (en) 1978-09-29 1978-09-29 Display method for the amount of interference distortion caused by multipath interference of FM radio waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53120032A JPS5946451B2 (en) 1978-09-29 1978-09-29 Display method for the amount of interference distortion caused by multipath interference of FM radio waves

Publications (2)

Publication Number Publication Date
JPS5546641A true JPS5546641A (en) 1980-04-01
JPS5946451B2 JPS5946451B2 (en) 1984-11-13

Family

ID=14776208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53120032A Expired JPS5946451B2 (en) 1978-09-29 1978-09-29 Display method for the amount of interference distortion caused by multipath interference of FM radio waves

Country Status (1)

Country Link
JP (1) JPS5946451B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166839A (en) * 1982-03-26 1983-10-03 Onkyo Corp Multipath wave component detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166839A (en) * 1982-03-26 1983-10-03 Onkyo Corp Multipath wave component detection method

Also Published As

Publication number Publication date
JPS5946451B2 (en) 1984-11-13

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