KR20010058808A - Note hight automatic control method for karaoke system - Google Patents

Abstract

PURPOSE: A method for automatically controlling a pitch height of a sound in a karaoke system is provided to supply accompaniment sound suitable for a vocalization ability of a user by judging the highest note of the accompaniment and the user, thereby performing an accompaniment within the range of a pitch of sound. CONSTITUTION: A microcomputer scans that a user selects a song using a key operation unit or a function button(S1). Data of the song are loaded and stored in an input buffer(S2). The microcomputer reads the highest note in accompaniment information(S3). The microcomputer analyzes an interval, words and channel information, and stores the result analyzed in an output buffer(S4). The microcomputer analyzes a MIDI(Musical Instrument Digital Interface) clock, and sets an interrupt timer value(S5). The microcomputer outputs MIDI data to a sound source integrated element(S6). The microcomputer displays word information with a specific color(S7).

Description

NOTE HIGHT AUTOMATIC CONTROL METHOD FOR KARAOKE SYSTEM}

The present invention relates to a technology for automatically setting the pitch in the karaoke system, and in particular to analyze the highest pitch height of the user, and automatically shifts the accompaniment according to the analysis result is converted to the vocalization range of the user vocalization The present invention relates to a method for automatically controlling the pitch of a system.

Karaoke system, also known as auto half cycle, stores song information arranged in MIDI (Musical Instrument Digital Interface) file format on a large storage medium, and accesses the corresponding song information according to the user's song selection. Electronic circuits are displayed on the screen and generate accompaniment sounds.

In the early days as a storage medium, a lot of flash memory was used, but a hard disk has been used in recent years, and an optical disk has recently been used.

When singing using the karaoke system, the most important factors are, of course, pitch and beat. Among these, the pitch is a more important factor. Because the beat doesn't look so awkward at any point, but if you set the pitch incorrectly from the beginning, or if you're singing well and you're out of the pitch that you can sing, you can't sound unnatural or speak out. This is because it happens when you give up a song.

In particular, as many songs of various genres, as many singers choose to sing a song, each singer's vocal range is very different, so it is not easy to sing to your own range.

Of course, you can change the key while singing, and if the male user sings the female singer, you can press the male selection button or vice versa, but in this case the pitch is set. It is extremely rare that it fits in your range because it is raised or lowered uniformly by a certain value.

As described above, in the karaoke system according to the prior art, a user switches a key or presses a male or female selection button while singing to set his or her pitch. In this case, the pitch is increased by a predetermined value. It was difficult to set the pitch appropriately for his range because it was going up or down.

Accordingly, the first object of the present invention is to compare the maximum range of the entire accompaniment to be played with the maximum range of the user who sings in advance so that the accompaniment is performed within the pitch range that the user can speak.

A second object of the present invention is to automatically transpose the accompaniment sound so that the song of the female singer among the songs selected by the user can be tuned to his or her range.

1 is a block diagram of a karaoke system to which the automatic pitch control method according to the present invention is applied.

Figure 2 is a flow diagram of the overall signal for the automatic pitch control method of the karaoke system according to the present invention.

3 is a signal flow diagram of an APC subroutine according to the key scan in FIG.

FIG. 4 is a detailed signal flowchart of a peak pitch reading process in the performance information of FIG. 2. FIG.

5A and 5B are signal flow diagrams of a subroutine for the interpretation of pitch information in FIG.

*** Description of the symbols for the main parts of the drawings ***

1: microcomputer 2: program ROM

3: system RAM 4: font ROM

5: memory 6: key control panel

7: display unit 8: video decoder

9: sound source integrated device 10: A / D converter

11: Karaoke integrated device 12,13: D / A converter

The automatic pitch control method of the karaoke system to achieve the object of the present invention, when the first pitch correction or the highest pitch correction key is selected, the pitch is read using the pitch detection function for the microphone voice, and then the first pitch number is updated. A first step of updating a highest pitch number and switching to a microphone input standby state; A second step of loading and storing data of the selected song and reading the highest pitch in the performance information; A third step of analyzing pitch, lyrics, and channel information, and performing transposition of the first pitch or the highest pitch based on the analysis result and storing the result; A fourth process is performed by analyzing the MIDI clock, setting an interrupt timer value, and outputting MIDI data to the sound source integrated device.

1 is a block diagram of a karaoke system to which the automatic pitch control method according to the present invention is applied, and as shown therein, a microcomputer 1 for overall control of a karaoke system; A program ROM 2 for storing a main program for auto accompaniment; A system RAM 3 for storing and reading out various kinds of information necessary for executing the program; A font ROM 4 storing font data for displaying lyrics of the song; A memory 5 storing actual MIDI performance data, video data and lyrics data; A key operation unit 6 for selecting a function desired by a user or inputting an operation command; A display unit 7 for displaying an operation state of the product; An interface for outputting various kinds of information read out, the video decoder 8 decoding the video information, and the sound source integrated device 9 generating a sound corresponding to the input MIDI data; An A / D converter 10 for converting a user's analog voice signal input through a microphone into a digital signal; A karaoke integrated device (11) for reading the pitch of the user's voice converted into a digital signal through the A / D converter (10) and processing an echo effect; A D / A converter 12 for converting a digital video signal output from the video decoder 8 into an analog signal; It is composed of a D / A converter 13 for converting the digital voice signal output from the sound source integrated device 9 and the karaoke integrated device 11 into an analog signal, the operation of the present invention configured as described above with reference to FIGS. A detailed description with reference to FIG. 5 is as follows.

Figure 2 shows the overall signal flow process of the automatic accompaniment of the karaoke system according to the present invention.

That is, the microcomputer 1 scans the user for selecting a desired song using the key operation unit 6 or for selecting a function button (first pitch correction, highest pitch correction) (S1).

In FIG. 2 and when the user selects the first pitch correction function, as shown in FIG. 3, the pitch is first read using the pitch detection function of the karaoke integrated device 11 for the microphone voice in each mode. The Intro Note Number (INN) is updated, and when the highest pitch correction function is selected, the note is read and the highest note number (HNN) is updated according to the reading result. The two functions are used alone.

As described above, when the user presses the button of the corresponding function once more in the state of setting the INN or the HNN for the microphone input, the light is changed from the flashing state to the lit state, and the flag is set to escape the routine.

In this state, if the user presses the button again, the indicator turns off and this function is turned off.

If it is determined that the song is selected, the data of the song is loaded and stored in the input buffer, and if it is determined by the user that the function button is selected, the indicator is blinked (Blink) and the microphone input standby state (S2).

Thereafter, the microcomputer 1 loads the data of the song selected by the user, stores the data in the input buffer, and reads the highest note in the performance information (S3).

The reading process of the highest pitch in the performance information is performed as shown in FIG. That is, the MIDI data of the selected song is stored in the input buffer, then the Highest Note reading subroutine in the performance information is executed to scan the MIDI data, and based on this, the highest pitch height (Nh) and the initial pitch of the melody ( Ni) is found. Here, Na and Nb are obtained and stored, and the routine exits.

Thereafter, the pitch, lyrics, and channel information are analyzed and the analysis result is stored in the output buffer (S4).

That is, as shown in FIGS. 5A and 5B, the pitch information is analyzed to start the correction on the note information except the control information. In order to interpret the note information, parsing is performed based on the standard of MIDI data. For this purpose, the data is read by one byte from the input buffer, the data is analyzed, and processed according to the analysis result and stored in the output buffer.

The MIDI data stored in the output buffer is periodically output by the interrupt processing routine when later outputted to the sound source integrated device 9. In addition, when the tempo variable key is input by the user, the output timing is adjusted by varying the interval in which the interrupt is applied.

Among the messages taken from the input buffer, a message needed for correction is a note on message, which is 9nH (n = channel value) as a MIDI value. After filtering the 9nH (n = channel value) to determine whether it is a melody channel (usually channel 1), and if it is determined to be a melody channel, the difference between the obtained INN and Ni or HNN and Nh is determined, respectively. Save as Na and Nb.

After doing this, if the user determines that the Intro Note Setting Mode has been selected, the adjustment note value Na is subtracted from the input midnote (byte). As an example, the note (Ni) in the first lyrics section of the melody channel starts with a note (G3: note number = 67), and if INN detected from the microphone input is 64 (US: E3), Na = 67-64 The transposition is performed so that the overall value is = 3 and the total is lowered by 3 degrees.

In addition, when the user selects the highest note setting mode, the previously-adjusted note Nb is subtracted from each note information input as described above, and the transposed MIDI notes are stored in the output buffer. In particular, note that the drum channel among the input MIDI notes has a percussion instrument assigned to each note, so it should not be applied during transposition. Therefore, if n is a drum channel (n = 10) out of 9nH (n = channel value) during filtering, this function is simply stored as an output buffer regardless of off.

Thereafter, the microcomputer 1 analyzes the MIDI clock, sets an interrupt timer value, and outputs MIDI data to the sound source integrated device 9. In this case, the display unit 7 displays lyrics information. In addition, the information to be emphasized is displayed in a specific color (S5-S7).

As described in detail above, the present invention compares the maximum range of the entire accompaniment to be played and the maximum range of the user who sings in advance to perform the accompaniment within the pitch range that can be spoken by the user. There is an effect that can provide the optimum accompaniment to match.

In addition, by automatically transposing the accompaniment sound so that the female singer's song among the songs selected by the user can be tuned to his or her range, the accompaniment suitable for the male can be provided even when the male sings the female song. It works.

Claims (4)

A first step of reading a pitch using a pitch detection function and then updating the first pitch number or updating the highest pitch number when the first pitch correction or peak pitch correction key is selected; A second step of loading data of the selected song to read the highest pitch in the performance information; A third step of analyzing pitch, lyrics, and channel information, and performing transposition of the first pitch or the highest pitch based on the analysis result and storing the result; And a fourth step of analyzing the MIDI clock, setting an interrupt timer value, and then outputting the MIDI data to the sound source integrated device. The method of claim 1, wherein the first step comprises: when the first pitch correction function is selected, a first step of reading the pitch using the pitch detection function of the karaoke integrated device for the microphone voice in each mode and then updating the first pitch number. Wow; If the highest pitch correction function is selected, reading the pitch and then updating the highest pitch number according to the reading result; When the button of the corresponding function is pressed once more after the first pitch number or the highest pitch number for the microphone input is updated, the indicator is switched to the lit state from the flashing state, sets the flag, and then exits the routine. The automatic pitch control method of the karaoke system. The method of claim 1, wherein the second process comprises: a first step of storing MIDI data of a song selected by a user in an input buffer; A second step of executing MIDI peak reading subroutine in the performance information to retrieve MIDI data; And a third step of obtaining the highest pitch and the first pitch of the melody based on the search result, and obtaining and storing the adjustment note values (Na) and (Nb). The method of claim 1, further comprising: a first step of analyzing the MIDI data and storing the analysis result in an output buffer; A second step of obtaining a difference between the first pitch number and the first pitch or the highest pitch number and the highest pitch height and storing them as adjustment note values Na and Nb; If the first pitch correction function is selected, the adjustment note value (Na) is subtracted from the input MIDI note. If the highest pitch correction function is selected, the adjustment note value (Nb) is subtracted from each note information input. Automatic pitch control method of the karaoke system, characterized in that consisting of a third step of executing.