KR0123718B1 - Apparatus for video music accompaniment displaying tone of song - Google Patents

Abstract

An image song accompaniment system capable of displaying a tone of a music is disclosed. The system comprises an accompaniment information memory(10), a text information memory(12), an accompaniment signal generator(24), a text signal generator, a controller(32) for controlling the operation of the system so as to replay both the accompaniment signal and the text signal, a letter signal generator(36) for generating the letter signal, and a mixer for mixing the letter signal from the letter signal generator(36) and the output of a video memory(14).

Description

Video song accompaniment that displays the pitch of the song

1 is a block diagram showing an image song accompaniment device according to the present invention.

2 shows the data format of channel messages in a MIDI signal.

3 is a diagram showing accompaniment data stored in the accompaniment data memory shown in FIG.

4 is a diagram illustrating an example in which pitch is displayed on a display apparatus.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video song accompaniment device, and more particularly, to a video song accompaniment device for displaying a musical note (melody) as a graphic signal through a display device.

A video song accompaniment device, also known as a karaoke appratu, is a device that allows a user to enjoy a song in accordance with a song accompaniment signal while displaying a song lyrics on a video display device together with a song accompaniment signal.

Recently, a video song accompaniment apparatus using a compact disc, a semiconductor memory, or the like, which records digital accompaniment data, has been increasingly used in place of an image song accompaniment apparatus using a laser disc or the like that has recorded and recorded an analog accompaniment signal.

MIDI digital music data is used as the digital accompaniment data.

Although the video song accompaniment device can enjoy singing in accompaniment with the accompaniment signal, it is difficult to sing along with the pitch and beat of the song precisely because the accompaniment transmits the melody aurally.

In order to sing a song correctly, a score is required, which is inconvenient to have a separate song book or a score book.

Accordingly, an object of the present invention is to provide an image song accompaniment apparatus for extracting pitch data from an accompaniment signal and displaying the same in a graph form on a screen of the display apparatus.

The video song device of the present invention achieves the above object is an accompaniment information storage unit for accompaniment information according to the MIDI (Musical Instrument Digital Interface) standard, a lyrics information storage unit for storing lyrics information, accompaniment signal based on the accompaniment information A video accompaniment apparatus comprising an accompaniment signal generator for generating a signal, a lyrics signal generator for generating a video signal based on lyrics information, and a controller for controlling an operation of generating a lyrics signal together with the playback of the accompaniment scene. The controller extracts and outputs pitch data from the accompaniment signal, injects pitch data output from the controller, and generates a graphic signal corresponding thereto; And a mixer which superimposes the graphic signal generated by the text signal generator on the video signal output from the lyrics signal generator. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an image song accompaniment device according to the present invention. In the apparatus shown in FIG. 1, reference numeral 10 is an accompaniment information memory for storing accompaniment information for a plurality of musical instruments, 12 is lyrics information memory, and 14 is lyrics information having a bit map font. The lyrics signal generation section converts and outputs the video signal, and 16 is a font ROM for storing bitmap fonts corresponding to the lyrics information.

Reference numeral 18 denotes a background image generator for generating a background image, and 20 denotes a first image signal indicating a lyrics signal generated by the lyrics signal generator 14 and a second image signal generated by the background image generator 18. Is an image synthesizing unit which synthesizes and outputs the result to the monitor 22.

Reference numeral 24 is an accompaniment generator for generating molecular signals based on accompaniment information of each instrument, and 26 is an accompaniment signal generated by the accompaniment signal generator 24 and a voice signal of a mantissa introduced through the microphone 28. A voice synthesizer which synthesizes and outputs the speaker 30.

Reference numeral 32 is a control unit that reads accompaniment information stored in the accompaniment information storage unit 10 and provides the accompaniment signal generator 24 to control the lyrics information storage unit 12 and the housekeeping signal generator 14. The lyrics information is displayed and pitch data is generated from the accompaniment information and output to the character signal generator 36.

Reference numeral 34 denotes a command input unit for specifying a song program selection, reservation, playback, print output function, and the like.

The text signal generator 36 injects pitch data provided from the controller 32, generates a graphic signal corresponding thereto, and provides the same to the mixer 38. Each pitch is represented by a stacked bar graph arranged longitudinally on the screen. For example, in case of doeum, it is represented by one space, and in case of REMO, it is represented by two spaces. That is, the length of the cumulative bar graph is variable according to the pitch of the pitch.

Accompaniment information stored in the accompaniment information storage unit 10 is composed of MIDI data, and the format of the MIDI data is shown in Table 1 below.

TABLE 1

The MIDI signal consists of a status byte of one byte and data bytes of at least one byte. MIDI signal is divided into channel message and system message according to status byte, and channel message is divided into voice message and mode message, and system message is divided into exclusive message, common message, and real-time message. . The channel message indicates which instrument (channel) causes the sound to be generated or stopped at what pitch and how strong or weak, as shown in FIG.

Figure 2 shows the data format of channel messages among the media data. In FIG. 2, the channel message 200 has note on / off data 200a, channel data 200b, note number data 200c, and velocity data 200c.

The note on / off data 200a is a 4-bit signal that controls turning on or off the sound of the musical instrument specified by the channel data and note number data shown later.

The channel data 200b is a 4-bit data for determining the type of the abbreviation, and determines the musical sound generated by the accompaniment signal generator 24. Since it is a 4-bit signal, up to 16 instruments can be specified.

The note-on data 200c indicates the pitch of the musical instrument specified by the channel data 200b, and the velocity data 200d determines at what intensity the specified pitch should be generated.

3 is a diagram showing accompaniment data stored in the accompaniment data memory of FIG. In Fig. 3, reference numeral 40 denotes a start message indicating the start of accompaniment, 42 denotes a system clock, and 44 denotes a note on message.

The system clock 42 is a byte signal having F8 in hexadecimal as shown in Table 1. System clocks appear periodically, which is indicated by meta events rather than channel or system messages. The meta-event starts with a byte new hole in hexadecimal FF, and the tick clock time is expressed in microseconds.

The controller 32 extracts a note number of a specific channel (for example, a channel designating a piano) included in the note-on signal from the accompaniment data, and provides the note number to the armless signal generator 36.

The text signal generator 36 generates a cumulative bar graph signal corresponding to the note number provided by the control unit 32 and provides it to the mixer 38.

The mixer 38 mixes the lyrics signal generated by the lyrics signal generator 14 and the cumulative bar graph signals generated by the text signal generator 36 and provides them to the display apparatus 22.

4 is a view showing a graphic screen displayed on the screen of the display device. The pitch data is displayed as a cumulative bar graph at the bottom left of the screen, and the length of the cumulative bar graph is determined by the pitch of the pitch.

As described above, the video song accompaniment apparatus according to the present invention has the advantage that the user can enjoy the song while watching the pitch of the pitch by extracting the pitch data from the accompaniment signal and outputting it in the form of a stacked bar graph through the display apparatus.

Claims (2)

Accompaniment information storage unit for accompaniment information according to MIDI standards, lyrics information storage unit for storing lyrics information, accompaniment signal generator for generating accompaniment signals based on accompaniment information, lyrics signal generation for generating video signals based on lyrics information And a controller for controlling an operation of generating a lyrics signal together with reproduction of an accompaniment signal, wherein the controller extracts and outputs pitch data from the accompaniment signal and outputs the pitch from the controller. A character signal generator for introducing data and generating graphic signals corresponding thereto; And a mixer which superimposes the graphic signal generated by the text signal generator on the video signal output from the lyrics signal generator. The apparatus of claim 1, wherein the graphic signal generated by the text signal generator is a cumulative bar graph signal corresponding to a pitch of a pitch.