JPS5517844A - Frequency characteristic automatic adjustment unit of magnetic recorder and reproducing device - Google Patents
Frequency characteristic automatic adjustment unit of magnetic recorder and reproducing deviceInfo
- Publication number
- JPS5517844A JPS5517844A JP8961178A JP8961178A JPS5517844A JP S5517844 A JPS5517844 A JP S5517844A JP 8961178 A JP8961178 A JP 8961178A JP 8961178 A JP8961178 A JP 8961178A JP S5517844 A JPS5517844 A JP S5517844A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- reproducing
- frequency characteristic
- automatically
- level
- 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
Abstract
PURPOSE: To make it possible to perform compressing-expanding operations by adjusting the level of recording single automatically by a variable attenuator and a variable high-band compensating circuit.
CONSTITUTION: Signals of reference oscillator OSC are recorded on a tape under the control of control unit LA, and at a reproducing time, the attenuation quantity of variable attenuator VA provided in the recording system is automatically so set that a reproducing signal level approximately equal to the recording level at a specific point can be obtained. Next, different signals are recorded from OSC on a tape while leaving the attenuation quantity of VA as it is, and at a reproducing time, the compensation quantity of high-band signal components dependent upon variable high-band compensating circuit VHC of the recording system is automatically so set that a reproducing signal level approximately equal to the recording level at a specific point can be obtained. As a result, recording and reproducing operations dependent upon a practically flat frequency characteristic can be performed independently of used tapes.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8961178A JPS6010367B2 (en) | 1978-07-23 | 1978-07-23 | Automatic frequency characteristic adjustment device for magnetic recording and playback devices |
US06/041,822 US4279005A (en) | 1978-05-28 | 1979-05-23 | Method and system for automatically providing flat frequency response to audio signals recorded on magnetic tapes |
GB7918274A GB2025682B (en) | 1978-05-28 | 1979-05-25 | Method and system for automatically providing flat frequency response to audio signals recorded on magnetic tapes |
DE2921556A DE2921556C2 (en) | 1978-05-28 | 1979-05-28 | Device for setting a tape recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8961178A JPS6010367B2 (en) | 1978-07-23 | 1978-07-23 | Automatic frequency characteristic adjustment device for magnetic recording and playback devices |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5517844A true JPS5517844A (en) | 1980-02-07 |
JPS6010367B2 JPS6010367B2 (en) | 1985-03-16 |
Family
ID=13975538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8961178A Expired JPS6010367B2 (en) | 1978-05-28 | 1978-07-23 | Automatic frequency characteristic adjustment device for magnetic recording and playback devices |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6010367B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57101101A (en) * | 1980-12-12 | 1982-06-23 | Brother Ind Ltd | Drive controller for driven body |
-
1978
- 1978-07-23 JP JP8961178A patent/JPS6010367B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57101101A (en) * | 1980-12-12 | 1982-06-23 | Brother Ind Ltd | Drive controller for driven body |
Also Published As
Publication number | Publication date |
---|---|
JPS6010367B2 (en) | 1985-03-16 |
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