JP2004212473A - Karaoke machine and karaoke reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Karaoke machine that eliminates the need for generating dedicated audio data by using sound sources and convert compressed data to a format that audio equipment can reproduce and that can use general CDs as sound sources. <P>SOLUTION: A MIDI data conversion part 11 is provided in the audio equipment 1, and the MIDI data 11 are converted to synchronize with audio data 12. Further, a vocal processing part 15 is provided which removes a vocal component of the audio data to perform conversion into an accompaniment sound. A control part 6 performs data input/output control, reproduction synchronous control, etc. A display part 3 displays lyrics data and background image data controlled with the MIDI data. Further, a musical sound reproduction part 2 reproduces the vocal-processed audio data. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a karaoke apparatus and a karaoke reproducing method as if a sound source were present, and more particularly to a content composed of text data and image data display-controlled by MIDI (musical instrument digital interface) data and its data structure. Technology.
[0002]
[Prior art]
Conventionally, to perform karaoke, karaoke information including text data (lyrics data), image data (background image data), MIDI data for controlling the display thereof, and a sound source controlled by MIDI are stored. A dedicated playback device was required. However, with the spread of karaoke in recent years, there has been an increasing demand for easier karaoke.
[0003]
In particular, the sound source is composed of a waveform data storage unit for storing waveform data, a voice synthesis unit for decoding the waveform data, and the like, and it is necessary to prepare various waveform data according to the musical instrument to be played. Therefore, a large data capacity is required for storing the waveform data. Furthermore, the generation of waveform data has many know-how elements, and is a technique requiring a great deal of labor and cost.
[0004]
Therefore, a technology that does not require a sound source and realizes a karaoke function with a general audio device has been proposed. An example is shown below.
[0005]
Japanese Patent Application Publication No. 2002-132275 discloses a karaoke apparatus that realizes a karaoke function without a sound source. This karaoke apparatus requires a medium having at least text data, MIDI data, and compressed audio data. Further, a control unit for receiving or reading text data, MIDI data, and compressed audio data from the medium, and a display unit for displaying the text data received or read by the control unit are provided. Then, the control unit performs a decompression process (decoding) of the received or read compressed audio data, and requires a decompression unit for outputting as audio data and a reproduction unit for reproducing the audio data output by the decompression unit. The MIDI data on the medium has control information for controlling the display timing of the text data and includes information for instructing the reproduction start of the audio data.
[0006]
[Patent Document 1]
Patent Publication No. 2002-132275
[Problems to be solved by the invention]
However, in the conventional karaoke apparatus, it is necessary to newly create compressed audio data dedicated to karaoke. FIG. 1 in Patent Literature 1 shows a method of the creation. That is, based on the MIDI data stored in the primary medium, dedicated audio data is newly created using a sound source in the conversion device. The audio data has no vocal component, for example, and is data synchronized with the reproduction of MIDI data. The sound quality of the audio data in this case depends on the quality of the sound source. For example, in order to achieve high-quality sound recorded in a studio, such as a song on a CD (compact disc), a high-quality (expensive) sound source is required. Further, in this state, since the data format is difficult to be reproduced by a general audio device, the data format must be converted into a compressed audio format as described in Patent Document 1. Therefore, the sound quality deteriorates due to the data compression. In order to prevent the deterioration of sound quality as much as possible, a high-quality compression unit (encoder) is required.
[0008]
In the above-described conventional karaoke apparatus, it is necessary to create dedicated audio data using a sound source. Furthermore, in order to enable reproduction by a general audio device, it is necessary to convert the data into a format that can be reproduced by the audio device, for example, by compressing the data. This requires a compression unit (encoder). In addition, the quality of audio data depends on the quality of a sound source to be used, and there is a problem that sound quality always deteriorates because data compression is performed.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and is intended to realize a karaoke function using general-purpose audio data such as a CD without using a MIDI sound source having a complicated structure. It is an object of the present invention to realize a karaoke apparatus and a karaoke reproducing method that can synchronize the display timing of image data and lyrics data with the output timing of general-purpose audio data of music.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 of the present application is characterized in that, when MIDI data is used as data for synchronously controlling the display of a background image and lyrics corresponding to each music in the order of performance of the music, the audio data of the music is given. A karaoke apparatus for displaying a background image and lyrics in conjunction with the accompaniment sound of the music using the MIDI data, wherein the karaoke device includes the background image data and the lyrics data when the audio data of the music is reproduced. A MIDI data conversion unit for extracting the MIDI data from the karaoke information database and converting the MIDI data so as to synchronize with the audio data; a vocal processing unit for removing a vocal component from the audio data; Based on the converted MIDI data to synchronize with the audio data output from the vocal processing unit A control unit that reads the background image data and the lyrics data from the karaoke database, a display unit that displays at least lyrics using the background image data and the lyrics data output from the control unit, and an output of the vocal processing unit. And a music playback unit that plays back audio data as an accompaniment sound.
[0011]
The invention according to claim 2 of the present application is characterized in that when MIDI data is used as data for synchronously controlling the display of a background image and lyrics corresponding to each music in the order of performance of the music, the audio data of the music is provided. A karaoke apparatus for displaying a background image and lyrics in conjunction with the accompaniment sound of the music using the MIDI data, wherein the karaoke device includes the background image data and the lyrics data when the audio data of the music is reproduced. A MIDI data conversion unit for extracting the MIDI data from the karaoke information database and converting the MIDI data so as to synchronize with the audio data; and synchronizing with the audio data when the audio data of the music is reproduced. The background image data and the lyrics from the karaoke database based on the converted MIDI data A reading unit that reads at least lyrics by using the background image data and the lyrics data output from the control unit; and a music playback unit that plays back the audio data as an accompaniment sound. It is characterized by doing.
[0012]
According to a third aspect of the present invention, in the karaoke apparatus according to the first or second aspect, the MIDI data, the lyrics data, and the background image data are stored as karaoke information together with audio data of each song on the same recording medium. It is characterized by the following.
[0013]
The invention according to claim 4 of the present application is characterized in that, when MIDI data is used as data for synchronously controlling the display of the background image and the lyrics corresponding to each music in the performance order of the music, the audio data of the music is given. A karaoke playback method for displaying a background image and lyrics in conjunction with the accompaniment sound of the music using the MIDI data, wherein when the audio data of the music is played, the background image data and the lyrics data are converted. The MIDI data is taken out from the karaoke information database including the karaoke information database, the MIDI data is converted so as to synchronize with the audio data, a vocal component is removed from the audio data, and the MIDI data is synchronized with the audio data output by the vocal removal processing. From the karaoke information database based on the converted MIDI data The scene image data and the lyrics data are read, and at least lyrics are displayed using the background image data and the lyrics data whose output timing is controlled based on the converted MIDI data, and the output audio data after the vocal removal processing is used as an accompaniment sound. It is characterized by reproduction.
[0014]
According to the invention of claim 5 of the present application, when data for synchronously controlling the display of the background image and the lyrics corresponding to each music in the order of performance of the music is MIDI data, the audio data of the music is given. A karaoke playback method for displaying a background image and lyrics in conjunction with the accompaniment sound of the music using the MIDI data, wherein when the audio data of the music is played, the background image data and the lyrics data are converted. The MIDI data is extracted from the karaoke information database including the karaoke information database, the MIDI data is converted so as to synchronize with the audio data, and the background image data is converted from the karaoke information database based on the converted MIDI data so as to synchronize with the audio data. And lyrics data, and output based on the converted MIDI data. There are those with the background image data and the lyric data is controlled to display at least lyrics, characterized by reproducing the audio data as accompaniment tone.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a karaoke apparatus according to the present invention will be described with reference to the drawings.
[0016]
(Embodiment 1)
FIG. 1 shows an overall configuration diagram of a karaoke apparatus according to Embodiment 1 of the present invention. In FIG. 1, an audio apparatus 1 is a so-called karaoke apparatus having not only a music playback unit 2 for playing music but also a display unit 3 for displaying information. The audio device 1 has a MIDI data conversion unit 4, a vocal processing unit 5, and a control unit 6 having functions to be described later, in addition to the music reproduction unit 2 and the display unit 3.
[0017]
In the present embodiment, MIDI data is data for synchronously controlling the display of background image data corresponding to each song and the display of text data describing lyrics in the order in which the songs are played. When the general-purpose audio data 12 of the music is reproduced, the MIDI data conversion unit 4 extracts the MIDI data 11 from the karaoke information database 7 including the image data 9 of the background image and the text data 10 of the lyrics. Data conversion of MIDI data is performed so as to synchronize.
[0018]
The vocal processing unit 5 performs vocal component removal processing from the general-purpose audio data 12. The vocal component removal method is a known technique, and one example thereof will be described with reference to FIG. The Lch signal of the general-purpose audio data 12 is L, and the Rch signal is R. As shown in FIG. 2, the signal L is input to the input terminal 51L, and the signal R is input to the input terminal 51R. The vocal signal at the sound source is V. A singer's vocal signal is often output from the center position between the Lch microphone and the Rch microphone when recording a song. Many songs used in karaoke satisfy this condition. Therefore, it is considered that the vocal signal V includes V / 2 in the signals L and R, respectively.
[0019]
The signal L is supplied to a band pass filter (BPF) 52L, and only a vocal band component is extracted to become a signal LV. This signal LV becomes V / 2 + ΔL. Note that ΔL is an audio component other than vocals included in the band of the BPF 52L. Similarly, the signal R is given to the band pass filter 52R, and only the vocal band component is extracted to become the signal RV. The signal RV becomes V / 2 + ΔR. Note that ΔR is an audio component other than vocals included in the band of the BPF 52R.
[0020]
The adder 55 adds the signal LV and the signal (−RV) output via the inverter 54, and outputs an addition signal K = LV−RV. This addition signal K becomes ΔL−ΔR. On the other hand, a band elimination filter (BEF) 53L outputs a signal (L-LV) obtained by removing a vocal band component from the signal L. The band elimination filter 53R outputs a signal (R-RV) obtained by removing a vocal band component from the signal R. Addition signal K is applied to adder 56L and inverter 57. The adder 56L adds the signal (L-LV) and the signal K, and provides a signal K + (L-LV) to an output terminal 58L. The adder 56R adds the signal (-K) obtained through the inverter 57 and the signal (R-RV), and supplies (R-RV) -K to the signal output terminal 58L.
[0021]
Therefore, the signal obtained from the output terminal 58L is K + (L−LV) = (LV−2) −ΔR, and becomes Lch audio data from which the vocal component has been removed. However, although the Rch accompaniment signal included in the band of the BPF is added, it does not matter as an accompaniment sound. The signal obtained from the output terminal 58R is (R−RV) −K = (R−V / 2) −ΔL, and becomes Rch audio data from which the vocal component has been removed. However, although an Lch accompaniment signal included in the band of the BPF is added, it does not matter as an accompaniment sound. By such processing, a vocal component can be removed from a stereo music signal.
[0022]
The control unit 6 reads the image data 9 and the text data 10 from the karaoke information database 7 based on the converted MIDI data in which the tempo information is rewritten by the MIDI data conversion unit 4 so as to synchronize with the audio data output from the vocal processing unit 5. Things. The display unit 3 displays a background image and lyrics using the image data and the text data output via the control unit 6. The music reproducing unit 2 reproduces output audio data of the vocal processing unit 5 as an accompaniment sound of a singing song.
[0023]
Karaoke information 8 is provided from the karaoke data information base 7 to the karaoke apparatus having such a configuration, that is, the audio equipment 1. The karaoke information 8 is information including image data 9 relating to a background image, text data 10 relating to lyrics, and MIDI data 11. The karaoke information 8 is linked to general-purpose audio data 12 recorded on a recording medium (optical disc such as a CD), and is provided, for example, via a CD creator.
[0024]
The general-purpose audio data 12 is general audio data, for example, uncompressed data recorded on a CD, that is, general music data including vocal components. The general-purpose audio data 12 is sent to the vocal processing unit 5 in the audio device 1. The vocal processing unit 5 removes a vocal component from the general-purpose audio data 12 and outputs the result to the control unit 6. In addition, depending on the CD, in addition to a normal song accompanied by a singer's singing voice, there is also a song for karaoke from which the vocal component is removed from the same song. When such a CD is used as a recording medium for the general-purpose audio data 12, or when it is desired to practice while listening to vocals, the vocal processing unit 5 is unnecessary. The control unit 6 acquires the karaoke information 8 corresponding to the general-purpose audio data 12 from the karaoke information database 7 when the music is reproduced.
[0025]
On the other hand, of the karaoke information 8 acquired by the audio device 1, the image data 9 and the text data 10 are given to the control unit 6. Further, the MIDI data 11 is used by the MIDI data converter 4 in the audio device 1 for processing to synchronize with the vocal-processed general-purpose audio data.
[0026]
An example of the method will be described. FIG. 3 is an explanatory diagram of a specific processing method of the MIDI data converter 4. FIG. 3A is a time chart showing the relationship between the total reproduction time A of the general-purpose audio data 12 and the vocal parts B1 and B2. FIG. 3C is a time chart showing the relationship between the total playback time M0 of the MIDI data before the data conversion included in the karaoke information 8 and the display timing of the lyrics corresponding to the vocals, ie, the text portions T10 and T20. is there.
[0027]
Comparing FIG. 3A and FIG. 3C, the relationship is “reproduction time M0 <reproduction time A”. This is because the tempo in the MIDI data is faster than the general-purpose audio data 12. In other words, by slowing down the tempo of the MIDI data, it is possible to make the reproduction times coincide and synchronize with the audio data.
[0028]
First, a method of calculating the reproduction time of the audio data and the karaoke information 8 will be described. For audio data, for example, if the sound source is a CD, the reproduction time information is described in the TOC (Table of Contents), and in the audio compression format WMA (Windows Media Audio, Windows is a registered trademark), The playback time information is described in the ASF header, which is the header information of, and can be easily obtained.
[0029]
On the other hand, the relationship between the MIDI data playback time and the tempo is shown in the following equations (1) and (2). Here, the time base is the resolution at the time of music division. The delta time is the minimum unit of the MIDI management time determined by the time base.
Reproduction time of one delta time = (1 / time base) * time obtained from Tempo [sec] (1)
Total playback time [sec]
= Delta time number * 1 Delta time playback time [sec] ... (2)
Here, with regard to the number of beats, for example, Tempo 120 is equivalent to 0.5 [sec]. By changing the tempo information of the MIDI data using the equations (1) and (2) so that the reproduction times coincide, it becomes possible to synchronize the data. FIG. 3B shows an example of converted MIDI data synchronized by the MIDI data conversion unit 4.
[0030]
As another method for synchronizing data, the tempo of the MIDI data is changed so that the start time of the display of the text T1 in FIG. 3 (c) matches the start time of the vocal B1 shown in FIG. 3 (a). There is also a way to do it. Here, the start time of the vocal B1 can be easily obtained when performing vocal processing of audio data. Also, the display start time of the text T10 of the MIDI data can be easily obtained from the MIDI event information and the above-described equations (1) and (2). Further, the tempo is determined so that the start time of the vocal B2 and the display start time of the text T20 coincide with each other, and the tempo "start time of B1 = start time of T10" and "start time of B2 = start time of T20" Match the tempo. That is, by averaging the respective tempo values, it is possible to further improve the synchronization accuracy.
[0031]
As described above, among the image data 9, the text data 10, the MIDI data 11 ′ after the data conversion, and the vocal-processed audio data 12 ′ collected by the control unit 6, the control unit 6 converts the audio data 12 ′. The music is sent to the music reproduction unit 5 and the music whose vocals have been deleted is reproduced. The control unit 6 decodes the MIDI data 11 ', sends text data and image data whose display is controlled by the MIDI data 11' to the display unit 3, and displays a background image and lyrics. With the above control, the text data (lyrics) and the image data (background image) can be displayed in synchronization with the reproduction of the audio data.
[0032]
With such a configuration and operation control, the karaoke function can be enjoyed using the audio device 1 having a simple configuration using only the karaoke information and general general-purpose audio data, that is, only a commercially available CD.
[0033]
In the first embodiment, a method for acquiring the karaoke information 8 from the karaoke information database 7 is not particularly mentioned. However, a similar effect can be obtained even if the karaoke information 8 is obtained from a CD selling company or the like via a network such as the Internet. At this time, for example, the tune information of the general-purpose audio data 12 is transmitted from the audio device 1 to a site having the karaoke information database 7 via the network, and the corresponding karaoke information 8 can be obtained from this site. With such a method, karaoke information can be easily obtained.
[0034]
Although the audio data here is uncompressed music data, for example, even if it is compressed data such as WMA, a sound source is not required although there is a slight deterioration in sound quality, and creation of dedicated audio data is not required. Since it is unnecessary, almost the same operation can be obtained.
[0035]
According to the present embodiment, the MIDI data conversion unit 4 converts the MIDI data so that the display timing of the text data or the image data and the output timing of the audio data can be synchronized, and the vocal processing unit Performs a process of removing vocal components, so that general audio data can be used without newly creating dedicated audio data.
[0036]
As a result, there is no need to create dedicated audio data using a sound source such as MIDI as in the related art. In order to create high-quality audio data by studio recording like a CD, it is necessary to prepare a high-quality (expensive) sound source. However, in the karaoke apparatus according to the present embodiment, general-purpose audio data recorded on a CD or the like can be used as it is, so that a unique sound source as a karaoke apparatus is not required, and the original music can be sung as it is as BGM.
[0037]
Further, as in the related art, audio data generated from a sound source has a data format that cannot be reproduced by a general audio device, and therefore needs to be converted into a compressed format that can be reproduced by an audio device. In the karaoke apparatus according to the present embodiment, general-purpose audio data such as a CD is used, so that format conversion of the audio data is not required. Therefore, a karaoke apparatus having no sound source can more easily enjoy the karaoke function.
[0038]
(Embodiment 2)
Next, a karaoke apparatus according to the second embodiment will be described. FIG. 4 is an overall configuration diagram of the karaoke apparatus according to the second embodiment. The audio device 1 has the same configuration as that shown in the first embodiment, and includes a music playback unit 2, a display unit 3, a MIDI data conversion unit 4, a vocal processing unit 5, and a control unit 6.
[0039]
The karaoke information 8 is composed of image data 9, text data 10, and MIDI data 11, but differs from the first embodiment in that the karaoke information 8 and general-purpose audio data 12 are stored in a recording medium 13. In the second embodiment, for example, a CD-RW disc, which is one of optical discs, is used as the recording medium 13.
[0040]
With such a configuration, the classification of karaoke songs can be performed for each recording medium 13. In addition, a song to be sung immediately can be prepared as needed.
[0041]
Although the CD-RW is used as the recording medium 13 in the second embodiment, the same effect can be obtained by using a memory card, which is a semiconductor recording medium, for example. Since these semiconductor recording media are smaller and lighter than the optical disc, portability is improved.
[0042]
Further, according to the karaoke apparatus of the present embodiment, since karaoke information such as MIDI data and audio data are stored in the recording medium, the karaoke tunes can be classified for each recording medium. In addition, a song to be used immediately can be prepared as needed.
[0043]
【The invention's effect】
According to the first and fourth aspects of the present invention, the MIDI data conversion unit can convert the MIDI data so that the display timing of the lyrics data and the background image data can be synchronized with the output timing of the audio data. it can. Since the vocal processing unit for removing vocal components is built in, it is not necessary to newly create dedicated audio data, and general audio data can be used.
[0044]
According to the second and fifth aspects of the present invention, since karaoke information such as MIDI data and audio data are stored in the recording medium, the karaoke songs can be classified for each recording medium. You can immediately prepare the song you want to sing.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a karaoke apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a configuration example of a vocal processing unit used in the karaoke apparatus according to the first embodiment.
FIG. 3 is an explanatory diagram showing a processing method of a MIDI data conversion unit in the karaoke apparatus of the first embodiment.
FIG. 4 is an overall configuration diagram of a karaoke apparatus according to Embodiment 2 of the present invention.
[Explanation of symbols]
Reference Signs List 1 audio equipment 2 music reproducing unit 3 display unit 4 MIDI data converting unit 5 vocal processing unit 6 control unit 7 karaoke information database 8 karaoke information 9 image data 10 text data 11 MIDI data 12 general-purpose audio data 13 recording media 51L, 51R input terminals 52L, 52R BPF
53L, 53R BEF
55, 56L, 56R Adders 54, 57 Inverters 58L, 58R Output terminals

Claims (5)

When MIDI data is used as data for synchronously controlling the display of the background image and the lyrics corresponding to each music in the order in which the music is played, when the audio data of the music is given, the music is used by using the MIDI data. A karaoke device that displays a background image and lyrics in conjunction with the accompaniment sound of
MIDI data conversion for extracting the MIDI data from the karaoke information database including background image data and lyrics data when the audio data of the music is reproduced, and performing data conversion of the MIDI data so as to synchronize with the audio data Department and
A vocal processing unit that performs vocal component removal processing from the audio data,
A control unit that reads the background image data and the lyrics data from the karaoke database based on the converted MIDI data so as to synchronize with the audio data output from the vocal processing unit;
A display unit that displays at least lyrics using the background image data and the lyrics data output from the control unit,
A karaoke apparatus comprising: a music playback unit that plays back output audio data of the vocal processing unit as an accompaniment sound. When MIDI data is used as data for synchronously controlling the display of the background image and the lyrics corresponding to each music in the order in which the music is played, when the audio data of the music is given, the music is used by using the MIDI data. A karaoke device that displays a background image and lyrics in conjunction with the accompaniment sound of
MIDI data conversion for extracting the MIDI data from the karaoke information database including background image data and lyrics data when the audio data of the music is reproduced, and performing data conversion of the MIDI data so as to synchronize with the audio data Department and
A control unit that reads the background image data and the lyrics data from the karaoke database based on the converted MIDI data so as to synchronize with the audio data when the audio data of the music is reproduced;
A display unit that displays at least lyrics using the background image data and the lyrics data output from the control unit,
A karaoke apparatus comprising: a music playback unit that plays back the audio data as an accompaniment sound. 3. The karaoke apparatus according to claim 1, wherein the MIDI data, the lyrics data, and the background image data are stored as karaoke information together with audio data of each song on the same recording medium. When MIDI data is used as data for synchronously controlling the display of the background image and the lyrics corresponding to each music in the order in which the music is played, when the audio data of the music is given, the music is used by using the MIDI data. Karaoke playback method of displaying a background image and lyrics in conjunction with the accompaniment sound of
When the audio data of the music is reproduced, the MIDI data is extracted from the karaoke information database including the background image data and the lyrics data, and the MIDI data is converted so as to be synchronized with the audio data.
Removing vocal components from the audio data,
Reading the background image data and the lyrics data from the karaoke information database based on the converted MIDI data so as to synchronize with the audio data output by the vocal removal processing;
Displaying at least lyrics using the background image data and lyrics data whose output timing is controlled based on the converted MIDI data,
A karaoke reproducing method, wherein the output audio data after the vocal removal processing is reproduced as an accompaniment sound. When MIDI data is used as data for synchronously controlling the display of the background image and the lyrics corresponding to each music in the order in which the music is played, when the audio data of the music is given, the music is used by using the MIDI data. Karaoke playback method of displaying a background image and lyrics in conjunction with the accompaniment sound of
When the audio data of the music is reproduced, the MIDI data is extracted from the karaoke information database including the background image data and the lyrics data, and the MIDI data is converted so as to be synchronized with the audio data.
Reading the background image data and the lyrics data from the karaoke information database based on the converted MIDI data so as to synchronize with the audio data;
Displaying at least lyrics using the background image data and lyrics data whose output timing is controlled based on the converted MIDI data,
A karaoke reproducing method, wherein the audio data is reproduced as an accompaniment sound.

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