JPS5793476A - Word processor - Google Patents

Word processor

Info

Publication number
JPS5793476A
JPS5793476A JP55170090A JP17009080A JPS5793476A JP S5793476 A JPS5793476 A JP S5793476A JP 55170090 A JP55170090 A JP 55170090A JP 17009080 A JP17009080 A JP 17009080A JP S5793476 A JPS5793476 A JP S5793476A
Authority
JP
Japan
Prior art keywords
signal
circuit
output
sound
reproducing
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
JP55170090A
Other languages
Japanese (ja)
Inventor
Shinji Tomita
Masayuki Nakayama
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP55170090A priority Critical patent/JPS5793476A/en
Publication of JPS5793476A publication Critical patent/JPS5793476A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To prevent a reproducing sound of a code signal from sounding through a loudspeaker, by providing a circuit for detecting a tone signal, in a reproducing system of a recording and reproducing device, and muting an output of an input/output circuit of a sound signal when the tone signal has been detected. CONSTITUTION:A reproducing signal of a code is supplied to a BPF 20 of 300 and 600Hz from a recording and reproducing device 3, and an output of this filter is supplied to a muting signal generating circuit 21. Subsequently, a muting signal is supplied to an amplifier 18 from the circuit 21. In this case, a circuit for detecting a tone signal is provided on a repeoducing system of the circuit so that the tone signal can be detected, and when the tone signal is detected, an output of an input/output circuit of a sound signal is muted. In this way, it is prevented to sound a discomfortable noise from a loudspeaker 6.
JP55170090A 1980-12-02 1980-12-02 Word processor Pending JPS5793476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55170090A JPS5793476A (en) 1980-12-02 1980-12-02 Word processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55170090A JPS5793476A (en) 1980-12-02 1980-12-02 Word processor

Publications (1)

Publication Number Publication Date
JPS5793476A true JPS5793476A (en) 1982-06-10

Family

ID=15898453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55170090A Pending JPS5793476A (en) 1980-12-02 1980-12-02 Word processor

Country Status (1)

Country Link
JP (1) JPS5793476A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573903A (en) * 1978-11-29 1980-06-04 Sharp Corp Magnetic recording and reproduction system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573903A (en) * 1978-11-29 1980-06-04 Sharp Corp Magnetic recording and reproduction system

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