KR0157497B1 - Method and apparatus for recording/reproducing audio signal in hifi system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hi-fi type educational recording medium and a device for reproducing an audio signal from a recording medium, wherein a recording medium for separating and recording question and answer audio signals into a hi-fi track and a hi-fi track of a recording medium. A signal separation unit for separating and outputting a voice signal read from the control unit, a command input unit for applying a plurality of control signals to perform a desired function, a control unit for outputting a control signal to select a voice signal from a hi-fi or normal track, And a voice synthesizer for processing the selected voice signal. Therefore, there is an effect of providing an efficient voice signal recording and reproducing apparatus for outputting voice signals simultaneously or separately according to the user's mode selection.

Description

Voice signal recording / reproducing method of hi-fi system and device therefor

1 is a block diagram of an audio signal reproduction signal of a hi-fi system according to the present invention.

* Explanation of symbols for main parts of the drawings

10: signal separation unit 20: normal signal processing unit

30: command input unit 40: control unit

42: microprocessor 44,46: transistor

50: voice synthesis unit 60: voice amplifier

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hi-fi type educational recording medium and a device for reproducing a voice signal from a recording medium. More particularly, the present invention relates to a device for reproducing a speech sound signal and an answer speech signal simultaneously or separately.

Currently, education using a video tape recorder is configured so that the user simply follows the recorded contents of the educational tape to be played. Then, in the test mode in which a question is given, in order to test the user's own ability, there is an inconvenience in that the voice is canceled or the tape play operation is stopped at the correct part.

An object of the present invention for solving the above problems is to reproduce the voice signal suitable for each mode by outputting the voice signal read from the tape having the question voice signal and the correct voice signal separately recorded according to the test mode or the correct answer mode. The present invention provides a method of recording and reproducing a voice signal of a hi-fi system.

Another object of the present invention is to provide an apparatus implementing the above-described method.

SUMMARY OF THE INVENTION An object of the present invention as described above is to provide a method for recording or reproducing an audio signal to or from a recording medium of a hi-fi method, wherein the first one of two audio channels of the hi-fi track is provided with a question audio signal. Recording a correct answer signal in two channels, selecting one of a plurality of modes to output only a desired sound signal, and depending on the selected mode, the question voice signal, the correct answer signal, and the two A voice signal recording and reproducing method comprising the step of outputting any one of all kinds of voice signals.

Another object of the present invention is a voice signal recording and reproducing apparatus of a hi-fi system, wherein a voice signal of a main body is recorded on both normal and hi-fi tracks, and a question and a right answer are recorded on left and right audio channels of the hi-fi track. A recording medium for separating and recording voice, a signal separation unit for separating and outputting a voice signal read from the hi-fi track of the recording medium to the first and second channels, and applying a plurality of control signals to perform a desired function A command input unit configured to output a control signal to select a voice signal from the tracks according to a signal applied from the command input unit, and process a voice signal received from the normal track or a hi-fi track under the control of the controller. Is achieved by voice signal recording and reproducing signals of a hi-fi system comprising a voice synthesis unit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an audio signal reproducing apparatus of a high-fidelity educational video tape according to an exemplary embodiment of the present invention. In Hi-Fi video tape, audio signals are recorded on normal tracks and hi-fi tracks.

The educational video tape according to the present invention separates and records the question and answer voice signals of the test screen on the hi-fi track during production. That is, the question audio signal is recorded in the audio L channel, and the correct voice signal is recorded in the audio R channel. The audio signal related to the main picture is recorded in both normal and hi-fi tracks as in the normal tape. In the above description, since the channel where the question and answer voice signals are recorded is not important, the question and answer voice signals can be recorded in the reverse of the above-described embodiment.

The audio signal read out from the hi-fi track is applied to the signal separator 10. The signal separator 10 separates audio signals of the audio L and R channels and outputs them to two output terminals. The normal signal processing unit 20 receives a voice signal read from the normal track and processes the signal. The command input unit 30 includes a mode selection key 32 and a channel change key 34. The control unit 40 receives a signal from the command input unit 30 and applies a control signal to the signal separation unit 10 and the normal signal processing unit 20. The output terminals of the signal separator 10 and the normal signal processor 20 are connected to the voice synthesizer 50. The voice amplifier 60 amplifies and outputs a voice signal applied from the voice synthesizer 50. The control unit 40 and the transistors 44 for switching the audio signal supplied from the signal separation unit 10 to the voice synthesis unit 50 according to the microprocessor 42 and the control signal of the microprocessor 42. ). The first transistor 44 is used to control the L channel audio signal output, and the second transistor 46 is used to control the R channel audio signal output. The transistors 44 and 46 are both NPN transistors, and are provided with a base end receiving a high or low level control signal from the microprocessor 42 and a collector end to which an audio signal is applied. Has

The signal separator 10 separates and outputs the audio L and R channel audio signals of the hi-fi track. The question audio signal of the L channel flows into the collector current of the first transistor 44, and the right voice signal of the R channel flows into the collector current of the second transistor 46.

The mode selection key 32 of the command input unit 30 is configured to select a normal mode, a test mode, and a correct answer mode function. The normal mode reproduces all the audio signals recorded on the tape, and the test mode reproduces only the audio signals related to the question. The correct answer mode is for reproducing the correct answer voice signal. When a signal for selecting a test mode from the mode selection key 32 is input to the microprocessor 42, the microprocessor 42 outputs a low level signal to the base of the first transistor 44. Then, a high level signal is output to the base terminal of the second transistor 46. Since the first transistor 44 is turned off, the L-channel signal from the signal separator 10 is applied to the voice synthesis unit 50. On the other hand, since the second transistor 46 is turned on, all of the R channel voice signals from the signal separator 10 flow to the ground. Therefore, the voice signal of the R channel is grounded and cannot be applied to the voice synthesizer 50. The voice synthesizer 50 processes the voice signal of the input L channel and outputs the voice signal to the voice amplifier 60. When the user selects the correct answer mode, the microprocessor 42 operates to check the correct answer together with the question contents or only the correct answer. When the output of the correct answer voice is required together with the question voice, the microprocessor 42 finds the first part of the test screen by using the VISS (VIDEO INDEX SEARCH SYSTEM) function. At this time, the microprocessor 42 applies a low level signal to the bases of the first and second transistors 44 and 46. As a result, all audio signals of the L / R channel are output to the voice synthesis section 50. On the other hand, when only the correct answer voice is to be output, the microprocessor 42 applies a low level signal to the base of the second transistor 46. As a result, only the audio signal of the R channel is output to the voice synthesis unit 50. When a signal for selecting the normal mode is applied from the mode selection key 32, the microprocessor 42 selects the signal from the hi-fi track or the normal track. The normal signal processor 20 receives a control signal from the microprocessor 42 when a voice signal is read from the normal track. The normal signal processor 20 processes the normal signal according to the control signal and outputs the normal signal to the voice synthesizer 50. The user may use the channel conversion key 34 of the command input unit 30 to change the learning environment. The microprocessor 42 applies a control signal to the signal separator 10 when a signal for channel conversion is input. The signal separator 10 outputs an audio signal of an L: R channel according to a control signal of the microprocessor 42. This allows the user to change the audio signal output to the left and right speakers.

The present invention described above has described an embodiment using a video tape recorder, but the above-described apparatus can be implemented in other audio signal reproducing apparatus using a hi-fi system.

The present invention described above has the effect of providing an efficient voice signal reproducing apparatus for separately recording the question and answer voice signals on a hi-fi type educational recording medium, and simultaneously or separately outputting the voice signals according to mode selection during reproduction. have.

Claims (12)

In an audio signal recording and reproducing apparatus of a hi-fi system, an audio signal of a main body is recorded on both normal and hi-fi tracks, and question and answer voices are separately recorded on left and right audio channels of the hi-fi track. Recording media; A signal separator for separating and outputting a voice signal read from the hi-fi track of the recording medium into first and second channels; A command input unit for applying a plurality of control signals to perform a desired function; A control unit which outputs a control signal to select a voice signal from the tracks according to the signal applied from the command input unit; And a voice synthesizer configured to process a voice signal received from the normal track or the hi-fi track under the control of the controller. The apparatus of claim 1, wherein the controller comprises: a microprocessor for controlling devices for processing signals read from the tracks according to a signal applied from a command input unit; And a first and second switching unit for controlling the output from the signal separation unit under the control of a microprocessor. 2. The apparatus of claim 1, wherein the control signals of the command input unit include a test mode signal, a first correct mode signal, and a second correct mode signal. 4. The hi-fi system of claim 3, wherein when the test mode signal is applied, the microprocessor shorts any one of the first and second switching units so as to output only the question audio signal from the signal separation unit. Audio signal recording and reproducing apparatus. 4. The high-frequency switch of claim 3, wherein when the first correct mode signal is applied, the microprocessor short-circuits both the first and second switching units to output both the question and the correct answer signal from the signal separator. Voice signal recording and reproducing apparatus for pi system. 4. The hi-fi system according to claim 3, wherein when the second correct mode signal is applied, the control unit short-circuits any one of the first and second switching units to output only the correct answer signal from the signal separating unit. Audio signal recording and reproducing apparatus. A method of recording a voice signal on a recording medium of a hi-fi method, the method comprising: recording a question voice signal in a first channel and a correct voice signal in a second channel of two voice channels of the hi-fi track; Voice signal recording method. A method for outputting an audio signal from a recording medium having a question audio signal recorded on a first channel of a hi-fi track and a correct audio signal recorded on a second channel of any one of a plurality of modes in order to output only a desired audio signal. Selecting one mode; And outputting any one of the question voice signal, the correct answer voice signal, and both types of voice signals according to a selected mode. The method of claim 8, wherein the modes include a test mode, a first correct answer mode, and a second correct answer mode. 10. The method of claim 9, wherein when the test mode is selected, only the question audio signal of the first channel is output. The method of claim 9. And when the first correct answer mode is selected, outputs both the question and the correct answer signal of the first and second channels. 10. The method of claim 9, wherein when the second correct answer mode is selected, only the correct answer voice signal of the second channel is output.