KR19980082874A - How to play karaoke on an audio system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reproducing an audio system, and more particularly, to a method for reproducing a karaoke of an audio system in which a singer voice is muted and only an accompaniment sound is reproduced and output when an audio signal is reproduced.

To this end, the present invention provides a karaoke reproduction method of an audio system for karaoke reproduction of a reproduced audio signal, comprising: an audio signal reading step (200) of reading an audio signal recorded in an R channel and an L channel of an audio system; An audio signal sampling step of sampling the audio signal read in the R channel and the L channel; A sampling data storage step 220 for respectively storing audio data of the R channel and the audio data of the L channel according to the sampling result of the audio signal sampling step; A comparison step 230 of comparing the audio data of the R channel and the audio data of the L channel stored in the sampling data storing step; A differential audio data deleting step 240 of deleting differential audio data according to a comparison result of the comparing step; A data synthesizing step 250 for synthesizing the audio data of the R channel and the audio data of the L channel from which the differential audio data has been deleted; And an audio signal processing step 260 for converting the synthesized R channel audio data and the L channel audio data into an analog signal, processing the audio signal, and outputting the audio signal.

Description

How to play karaoke on an audio system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reproducing an audio system, and more particularly, to a method for reproducing a karaoke of an audio system in which a singer voice is muted and only an accompaniment sound is reproduced and output when an audio signal is reproduced.

In general, a video cassette recorder provided in each home records a composite video signal applied from a tuner which tunes a broadcast signal received through an antenna to a desired channel on a magnetic tape using a head, or an image input from an external source. It has a recording function of recording a signal on a magnetic tape through the head and a reproduction function of reproducing a composite video signal recorded on the magnetic tape and displaying it on a monitor of a television, so that a viewer can watch a program to be watched at any time.

On the other hand, when the karaoke system plays a tape, a compact disc (CD), or a laser disc (LD) on which the singer and accompaniment of the song are recorded, the singer and the accompaniment sound are reproduced and output to the speaker, and the user uses the microphone. It is a system that amplifies the user's voice input through the amplifier and low-pass filter the amplified signal by the low pass filter and outputs it to the speaker.

An object of the present invention is to provide a karaoke reproduction method of an audio system for karaoke reproduction in which a singer voice is muted and only an accompaniment sound is reproduced and output when an audio signal such as a video cassette recorder or an audio device is reproduced. have.

A feature of the present invention for achieving the above object is a karaoke reproduction method of an audio system for karaoke reproduction of a reproduced audio signal, comprising: an audio signal lead for reading audio signals recorded in the R channel and the L channel of the audio system step; An audio signal sampling step of sampling the audio signal read in the R channel and the L channel; A sampling data storage step of storing audio data of the R channel and audio data of the L channel according to the sampling result of the audio signal sampling step; A comparison step of comparing the audio data of the R channel and the audio data of the L channel stored in the sampling data storing step; Deleting differential audio data according to the comparison result of the comparing step; A data synthesizing step of synthesizing the audio data of the R channel and the audio data of the L channel from which the differential audio data is deleted; And an audio signal processing step of converting the synthesized audio data of the R channel and the L channel audio data into an analog signal to process and output an audio signal.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

1 is a block diagram of hardware to which the present invention is applied;

2 is a flowchart for performing a karaoke reproduction method of an audio system according to a preferred embodiment of the present invention.

* Explanation of symbols for main parts of drawings *

10: audio playback head 20: amplifier

30: sampling unit 40: micom

50: memory 60: audio signal processing unit

70: speaker

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

1 is a block diagram of hardware to which the present invention is applied and includes an audio reproduction head 10, an amplifier 20, a sampling unit 30, a microcomputer 40, a memory 50, and an audio signal processing unit 60. , The speaker 60.

The audio reproduction head 10 reproduces and outputs an audio signal recorded for each of the R channel and the L channel, that is, the audio signal of the R channel and the L channel, on the audio track on the magnetic tape.

At this time, the amplifying unit 20 amplifies the R and L channel audio signals reproduced by the audio reproduction head 10 and outputs the amplified audio signals to the sampling unit 30.

The sampling unit 30 samples and outputs audio signals of the R channel and the L channel provided by being amplified by the amplifier 20. That is, the sampling unit 30 samples the audio data of each of the R channel and the L channel sampled by sampling at least 10 kHz of audio signals of the R channel and L channel audio signals provided by the amplifier 20 at predetermined time intervals. 40) and the audio signal processor 60.

At this time, the microcomputer 40 stores the R-channel audio data and the L-channel audio data sampled by the sampling unit 30 in the memory 50, and reads and reads the stored R-channel audio data and the L-channel audio data. Compare the R-channel and L-channel audio data, control the audio signal processor 60 to delete the differential audio data according to the comparison result, synthesize the R-channel audio data and the L-channel audio data from which the differential audio data is deleted, and The audio signal processor 60 is controlled to process the audio signal.

At this time, the memory 50 stores the R-channel audio data and the L-channel audio data sampled under the control of the microcomputer 40 as described above, reads the microcomputer 40 upon request, and outputs the microchannel 40 to the microcomputer 40. .

Meanwhile, the audio signal processor 60 deletes the R channel audio data and the L channel audio data provided by the sampling unit 30 in correspondence to the differential audio data provided by the microcomputer 40, and further, the microcomputer 40 may delete the audio signal. The audio data of the R channel and the audio data of the L channel are synthesized under the control of. In addition, the audio signal processor 60 converts the synthesized R channel audio data and the L channel audio data into an analog signal, processes the audio signal, and outputs the audio signal to the speaker 70.

2 is a detailed flowchart for performing a karaoke reproduction method of an audio system according to a preferred embodiment of the present invention, which will be described with reference to the block diagram shown in FIG.

When the audio reproduction head 10 reproduces the audio signals recorded in the R channel and the L channel in step 200 and outputs them to the amplifier 20, the amplifier 20 amplifies them and outputs them to the sampling unit 30. .

In this case, the sampling unit 30 proceeds to step 210 and samples the audio signal of 10 dB or more of the R and L channel audio signals provided by the amplifying unit 20 and outputs the sampled data to the microcomputer 40. .

That is, the microcomputer 40 stores the audio data of the R channel and the L channel output from the sampling unit 30 in step 220 and stores it in the memory 50, and proceeds to step 230. Read and compare audio data.

As a result of the comparison, if the audio data of the R channel and the audio data of the L channel are the same, the operation proceeds to step 250. If the audio data of the R channel and the audio data of the L channel are not the same, the operation proceeds to step 240 and the audio data of the R channel The audio signal processor 60 outputs a control signal for deleting audio data corresponding to the difference between the audio data of the L channel and the L channel.

Accordingly, the audio signal processor 60 deletes the audio data of the R channel and the L channel by the difference data of the difference, and proceeds to step 250 to synthesize the audio data of the R channel and the L channel, and proceeds to step 260. The synthesized audio data of R channel and L channel is converted into an analog signal, and the audio signal is processed and output to the speaker.

As described above, the karaoke reproduction method of the audio system according to the present invention compares the audio data of the R channel and the L channel sampled by sampling the audio signals of the R channel and the L channel to be reproduced, and the difference audio according to the comparison result. By deleting as much as the data, since the mantissa and the accompaniment sound are reproduced separately during reproduction, the karaoke reproduction can be performed.

While the invention has been shown and described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various modifications, changes and omissions can be made without departing from the spirit and scope of the invention.

Claims (1)

A karaoke reproduction method of an audio system for karaoke reproduction of a reproduced audio signal, An audio signal reading step (200) of reading audio signals recorded on the R channel and the L channel of the audio system; An audio signal sampling step (210) for sampling the audio signal read in the R channel and the L channel; A sampling data storage step 220 for storing audio data of an R channel and audio data of an L channel according to a sampling result of the audio signal sampling step; A comparison step (230) of comparing the audio data of the R channel and the audio data of the L channel stored in the sampling data storing step; Deleting differential audio data according to the comparison result of the comparing step (240); A data synthesizing step (250) for synthesizing the audio data of the R channel and the audio data of the L channel from which the differential audio data is deleted; And And an audio signal processing step (260) of converting the synthesized audio data of the R channel and the L channel audio data into an analog signal to process and output an audio signal.