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 waveInfo
- 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
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)
- Circuits Of Receivers In General (AREA)
- Monitoring And Testing Of Transmission 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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58166839A (en) * | 1982-03-26 | 1983-10-03 | Onkyo Corp | Detecting system of multi-path wave component |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0429486Y2 (en) * | 1986-08-13 | 1992-07-16 |
-
1978
- 1978-09-29 JP JP53120032A patent/JPS5946451B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58166839A (en) * | 1982-03-26 | 1983-10-03 | Onkyo Corp | Detecting system of multi-path wave component |
Also Published As
Publication number | Publication date |
---|---|
JPS5946451B2 (en) | 1984-11-13 |
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