JPS5562510A - Electronic volume and automatic sound recording level setting unit using it - Google Patents
Electronic volume and automatic sound recording level setting unit using itInfo
- 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
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
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)
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)
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 |
-
1978
- 1978-11-02 JP JP13457478A patent/JPS5562510A/en active Granted
Patent Citations (2)
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)
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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