JPS55153107A - Magnetic recording and reproducing device for audio signal - Google Patents
Magnetic recording and reproducing device for audio signalInfo
- Publication number
- JPS55153107A JPS55153107A JP5879479A JP5879479A JPS55153107A JP S55153107 A JPS55153107 A JP S55153107A JP 5879479 A JP5879479 A JP 5879479A JP 5879479 A JP5879479 A JP 5879479A JP S55153107 A JPS55153107 A JP S55153107A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- audio signal
- signal
- output
- component
- 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
Links
Abstract
PURPOSE: To increase the S/N ratio of a low-frequency component by bringing recording and reproduction to effect by converting audio signals into a high-frequency band.
CONSTITUTION: An audio signal input to input terminal 1 is balance-modulated by balanced modulator 2 with a signal of frequency f1 from fixed-frequency oscillator 3 and sum and difference component signals of frequency f1 and frequency fs of the audio signal can be obtained. Those signals are supplied to BPF4 to separate only a component of frequency f1+fs, which is supplied to balanced modulator 5. Modulator 5, supplied with frequency f2 from fixed-frequency oscillator 6, performs balanced modulation and its output is sent to LPF7. As a result, the output of LPF7 is converted into a signal with the audio signal increased by frequency f1-f2. This signal is recorded on a magnetic tape. In reproduction, the audio signal is output to output terminal 17 through the reverse operation. The high-frequency range conversion like this can improve the S/N of a low frequency component remarkably even when a recording medium of a thin coating is used.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5879479A JPS55153107A (en) | 1979-05-14 | 1979-05-14 | Magnetic recording and reproducing device for audio signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5879479A JPS55153107A (en) | 1979-05-14 | 1979-05-14 | Magnetic recording and reproducing device for audio signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55153107A true JPS55153107A (en) | 1980-11-28 |
Family
ID=13094475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5879479A Pending JPS55153107A (en) | 1979-05-14 | 1979-05-14 | Magnetic recording and reproducing device for audio signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55153107A (en) |
-
1979
- 1979-05-14 JP JP5879479A patent/JPS55153107A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS539418A (en) | Recording and reproducing unit | |
JPS57143704A (en) | Magnetic recording and reproducing device | |
JPS55153107A (en) | Magnetic recording and reproducing device for audio signal | |
JPS5644109A (en) | Magnetic recording and reproducing system | |
JPS57104392A (en) | Video signal recording and reproducing device | |
JPS5755512A (en) | Noise eliminating method of video disk | |
EP0387804A3 (en) | Recording of frequency-multiplex signal on recording medium | |
JPS5584006A (en) | Recording method for information signal | |
JPS5292427A (en) | Four phase generating system in color video signal recording and repro duction unit | |
JPS5350917A (en) | Chrominance component recording system | |
JPS5250625A (en) | Record reproduction device of colour image signal | |
JPS5492716A (en) | Video signal recording circuit | |
JPS5222824A (en) | Picture signal recording method | |
JPS57208610A (en) | Magnetic recording and reproducing system | |
JPS5287933A (en) | Recording method of video signal | |
JPS54140512A (en) | Magnetic recording and reproducing apparatus for digital data | |
JPS5271215A (en) | Playback method | |
JPS52141614A (en) | Magnetic recording reproduction device | |
JPS5799887A (en) | Recording and reproducing system for pal color video signal and its recording medium | |
JPS53132219A (en) | Recording and reproducing unit | |
JPS5593513A (en) | Recording device of pulse train signal | |
JPS53144706A (en) | Magnetic recording-reproducing system | |
JPS5584005A (en) | Magnetic recorder/reproducer | |
JPS5779783A (en) | Eraser for video tape recorder | |
JPS5769516A (en) | Digital information transmitter |