JPS5562510A - Electronic volume and automatic sound recording level setting unit using it - Google Patents

Electronic volume and automatic sound recording level setting unit using it

Info

Publication number
JPS5562510A
JPS5562510A JP13457478A JP13457478A JPS5562510A JP S5562510 A JPS5562510 A JP S5562510A JP 13457478 A JP13457478 A JP 13457478A JP 13457478 A JP13457478 A JP 13457478A JP S5562510 A JPS5562510 A JP S5562510A
Authority
JP
Japan
Prior art keywords
sound recording
circuit
output
inputted
terminal
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
JP13457478A
Other languages
Japanese (ja)
Other versions
JPS6217303B2 (en
Inventor
Itsuki Ban
Kyoichi Inoue
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 JP13457478A priority Critical patent/JPS5562510A/en
Publication of JPS5562510A publication Critical patent/JPS5562510A/en
Publication of JPS6217303B2 publication Critical patent/JPS6217303B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE: To obtain a unit which sets automatically the sound recording level of a magnetic sound recording and reproducing device, by constituting the unit by an electronic volume, a counter circuit, an FF circuit, a comparator circuit, AND circuit, etc.
CONSTITUTION: When push-button switch 16 is depressed, counter circuit 8 is reset, and FF circuit 11 is inverted positively, and the output of comparator circuit 12 is inputted to AND circuit 10. Then, electric switch 1a is closed, and sound recording signals are inputted. However, clock pulses are inputted to counter circuit 8 to start counting because of a small output of resistance attenuator 28. The output of resistance attenuator 28 is increased according as counting advances. Since the integral value of this output is inputted to terminal 12b, the intput of clock pulses to counter circuit 8 is broken to stop counting and fix the output of attenuator 28 when the value above exceeds the input voltage of terminal 12a. Here, if the applied voltage of terminal 12a is set to a prescribed value, sound recording signals of magnetic heat 4 are increased, and sound recording advances in a form of fade-in, and proper-level sound recording is set automatically.
COPYRIGHT: (C)1980,JPO&Japio
JP13457478A 1978-11-02 1978-11-02 Electronic volume and automatic sound recording level setting unit using it Granted JPS5562510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13457478A JPS5562510A (en) 1978-11-02 1978-11-02 Electronic volume and automatic sound recording level setting unit using it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13457478A JPS5562510A (en) 1978-11-02 1978-11-02 Electronic volume and automatic sound recording level setting unit using it

Publications (2)

Publication Number Publication Date
JPS5562510A true JPS5562510A (en) 1980-05-12
JPS6217303B2 JPS6217303B2 (en) 1987-04-16

Family

ID=15131524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13457478A Granted JPS5562510A (en) 1978-11-02 1978-11-02 Electronic volume and automatic sound recording level setting unit using it

Country Status (1)

Country Link
JP (1) JPS5562510A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5779721A (en) * 1980-11-06 1982-05-19 Ricoh Co Ltd Automatic gain controlling circuit
JPS6267307U (en) * 1985-10-18 1987-04-27
JPH01252013A (en) * 1988-03-31 1989-10-06 Rohm Co Ltd Automatic gain adjusting circuit
CN113362864A (en) * 2021-06-16 2021-09-07 北京字节跳动网络技术有限公司 Audio signal processing method, device, storage medium and electronic equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337351A (en) * 1976-09-20 1978-04-06 Hitachi Ltd Adjuster such as sound volume and sound tone for audio equipment
JPS5380943A (en) * 1976-12-26 1978-07-17 Ricoh Co Ltd Controllable attenuator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337351A (en) * 1976-09-20 1978-04-06 Hitachi Ltd Adjuster such as sound volume and sound tone for audio equipment
JPS5380943A (en) * 1976-12-26 1978-07-17 Ricoh Co Ltd Controllable attenuator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5779721A (en) * 1980-11-06 1982-05-19 Ricoh Co Ltd Automatic gain controlling circuit
JPS6267307U (en) * 1985-10-18 1987-04-27
JPH0548293Y2 (en) * 1985-10-18 1993-12-22
JPH01252013A (en) * 1988-03-31 1989-10-06 Rohm Co Ltd Automatic gain adjusting circuit
CN113362864A (en) * 2021-06-16 2021-09-07 北京字节跳动网络技术有限公司 Audio signal processing method, device, storage medium and electronic equipment

Also Published As

Publication number Publication date
JPS6217303B2 (en) 1987-04-16

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