JPS5555629A - Noise compensation system in audio signal intermittent transmission - Google Patents

Noise compensation system in audio signal intermittent transmission

Info

Publication number
JPS5555629A
JPS5555629A JP12894078A JP12894078A JPS5555629A JP S5555629 A JPS5555629 A JP S5555629A JP 12894078 A JP12894078 A JP 12894078A JP 12894078 A JP12894078 A JP 12894078A JP S5555629 A JPS5555629 A JP S5555629A
Authority
JP
Japan
Prior art keywords
signal
frequency
fed
phase
audio
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
JP12894078A
Other languages
Japanese (ja)
Inventor
Saburo Tanaka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP12894078A priority Critical patent/JPS5555629A/en
Publication of JPS5555629A publication Critical patent/JPS5555629A/en
Pending legal-status Critical Current

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  • Noise Elimination (AREA)

Abstract

PURPOSE: To obtain natural sound without click noise, by changing the audio frequency signal into higher frequency with frequency conversion, removing noise energy via the filter by using it, and through automatic phase adjustment for the phase at signal joints.
CONSTITUTION: The audio signal in which the joint of signal is discontinuous in phase is inputted to the input terminals 1 and 21 and they are respectively fed to the balanced modulators 2 and 22. In this case, the signal from the carrier oscillator 4 having a given frequency is fed to the modulators 2 and 22 via the amplifier 5, to perform modulation to higher frequency. Next, the signal having the frequency modulated is fed to the electronic switch 8 via BPF3 and 23 to select the signal at the terminals 1 and 21 on the time of input. After that, the selected signal is fed to the voltage controlled phase shifter 9, BPF10, demodulator 14 and LPF15 in series as the audio output without click noise from the terminal 16. Further, comparison amplifier is provided with the phase shifter 9 and BPF10.
COPYRIGHT: (C)1980,JPO&Japio
JP12894078A 1978-10-18 1978-10-18 Noise compensation system in audio signal intermittent transmission Pending JPS5555629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12894078A JPS5555629A (en) 1978-10-18 1978-10-18 Noise compensation system in audio signal intermittent transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12894078A JPS5555629A (en) 1978-10-18 1978-10-18 Noise compensation system in audio signal intermittent transmission

Publications (1)

Publication Number Publication Date
JPS5555629A true JPS5555629A (en) 1980-04-23

Family

ID=14997160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12894078A Pending JPS5555629A (en) 1978-10-18 1978-10-18 Noise compensation system in audio signal intermittent transmission

Country Status (1)

Country Link
JP (1) JPS5555629A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6449361A (en) * 1987-07-10 1989-02-23 Olivetti & Co Spa Measurement and automatic compensation system of strain in connection part between telephone equipment and central voice processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6449361A (en) * 1987-07-10 1989-02-23 Olivetti & Co Spa Measurement and automatic compensation system of strain in connection part between telephone equipment and central voice processor
JPH0693715B2 (en) * 1987-07-10 1994-11-16 イング・チイ・オリベッチ・アンド・チイ・エス・ピー・ア Distortion measurement and automatic compensation system for the connection between the telephone unit and the central voice processor

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