JP3698553B2 - Karaoke equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a karaoke apparatus for performing a medley performance by connecting at least a part of a plurality of songs arbitrarily selected from a plurality of song data.
[0002]
[Prior art]
Conventionally, in a karaoke apparatus, a technique related to a medley performance in which different tunes are played and enjoyed has been proposed.
In a general technique of this type, a medley song is created in advance by connecting only the most exciting parts (rusts) of a plurality of songs, and this medley song is played during medley performance.
A medley performance technique has also been proposed in which arbitrary music data is selected from a plurality of music data, and a part of the music corresponding to the selected music data is connected and played. In such a medley performance technique, a bridge connection technique for smoothly transitioning from the performance of the previous song to the performance of the next song has also been proposed.
[0003]
[Problems to be solved by the invention]
However, with the conventional technology for connecting arbitrarily selected song data as described above, the medley performance becomes unnatural as a whole when the tempo and time signature of the song itself are completely different. was there. In other words, the medley performance in the prior art is simply performed by connecting an arbitrary piece of music, so that it is not possible to produce a sense of unity as a whole medley piece.
[0004]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a karaoke apparatus capable of performing a medley performance that can obtain a sense of unity as a whole even in a medley performance in which arbitrary songs are connected. It is said.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention described in claim 1 A karaoke apparatus comprising storage means, selection means, playback means, and control means, wherein the storage means stores medley information and song data, and the medley information includes a plurality of rhythm tracks corresponding to time signatures. , Including information for determining the tempo, the song data includes a rhythm track and other tracks, and a medley playback section with a set time signature is set, and the selection means enables selection of medley information and song data, The reproduction means reproduces the song data and the rhythm track according to the control of the control means, and when the medley information is selected, the control means performs the process of changing the medley reproduction section of the selected song data and sends it to the reproduction means. The change processing is performed in order to change the tempo of the medley section to be played back to the tempo defined in the medley information and to play back the medley to be played back. To change the rhythm track between the rhythm track in the medley information corresponding to the beat Provide karaoke equipment.
The invention according to claim 2 is the invention according to claim 1. In In the karaoke device described, The reproduction means includes first and second reproduction units and a synthesis unit. The first reproduction unit reproduces other tracks, the second reproduction unit reproduces rhythm tracks, and the synthesis unit performs first reproduction. Output of the playback unit and the second playback unit It is characterized by that.
The invention according to claim 3 is the invention according to claim 1. In In the karaoke device described, When sequentially playing back the medley playback section, the control means fades out the previous medley playback section and causes the playback means to play back by fading in the subsequent medley playback section. It is characterized by that.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0007]
1. Configuration of the embodiment
1-1. Device configuration
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The illustrated karaoke apparatus is capable of performing a medley performance in which a part of a song arbitrarily selected by a user is connected in accordance with a certain tempo and rhythm pattern in addition to a normal performance performed through one song.
[0008]
First, a ROM 102, a hard disk 103, a RAM 104, a performance reproduction unit 105A, a performance reproduction unit 105B, a performance reproduction unit 105M, a monitor 108, and an operation unit 109 are connected to the CPU 101 via a bus. The karaoke device is controlled based on the control program.
The ROM 102 stores a font data for displaying lyrics on the monitor 108 in addition to a program for controlling the operation of the apparatus.
The hard disk (HDD) 103 stores a large number of song data for karaoke performance. In the present embodiment, as will be described later, the song data for karaoke performance includes normal song data used for normal karaoke performance and medley song data indicating a fixed tempo and rhythm during medley performance.
The RAM 104 is used for temporarily storing the song number of the requested song.
[0009]
By the way, as shown in FIG. 1, this apparatus includes three performance playback units 105A, 105B, and 105M in order to smoothly shift the performance from the previous song to the next song during the medley performance.
The performance playback units 105A and 105B are used for playback of performance music during normal performance or medley performance. The performance playback unit 105M is used for playback of medley rhythms and medley performance intros and ending performances during medley performances. That is, the performance playback unit 105M performs medley rhythm, the performance playback unit 105A (or 105B) plays the previous song, and the performance playback unit 105B (or 105A) plays the next song, so that the transition from the previous song to the next song is made. When you do this, you can naturally play the part where the previous and next songs overlap.
The performance reproduction unit 105A, the performance reproduction unit 105B, and the performance reproduction unit M each include a sound source device, an audio data processing unit, an effect DSP, and the like (not shown). A signal is formed, and the sound data processing unit forms a sound signal such as a back chorus. The effect DSP adds various effects such as echo and reverb to the musical sound signal and the audio signal, and outputs them to the mixer 106.
The mixer 106 mixes the musical sound signals input from the performance reproducing units 105A, 105B, and 105M at an appropriate ratio, and outputs the result to the sound system 107.
The sound system 107 converts the input musical sound signal into an analog signal, amplifies the analog signal, and outputs it from the speaker.
[0010]
The monitor 108 displays lyrics and instructions to the user, and uses, for example, a CRT display.
The operation unit 109 is configured to include a user interface, and is used when inputting a music number requested by the user. The user interface may be constituted by, for example, a numeric keypad or various key switches, or may be constituted by adding a remote controller using an infrared signal.
[0011]
1-2. Composition of song data
Next, the composition of song data used in this embodiment will be described with reference to FIG. In FIG. 2, (1) shows the structure of normal music data for normal performance, and (2) shows the structure of medley music data for medley performance according to the present invention.
In the present embodiment, when a song number corresponding to the normal song data is requested, the performance is performed based on the normal song data shown in FIG. That is, performance is performed at the tempo and rhythm indicated by the normal song data.
However, when a song number corresponding to the medley song data shown in FIG. 2 (2) is requested, the medley performance according to the present invention is performed and the tempo and rhythm pattern indicated by the medley song data are followed. A medley performance is performed. At this time, a medley section (a section from a medley start mark MS to a medley end mark ME, which will be described later) is used as a medley performance tune that is played with a part of the tune being connected.
During the medley performance, the rhythm track of each normal song data is not reproduced. Also, the tempo is reproduced in accordance with the tempo indicated by the medley song data, not the tempo of each normal song data.
[0012]
First, the structure of normal song data will be described with reference to FIG. As shown in the figure, the normal music data includes a header and track data.
First, in the header, a song number for specifying a song and various information related to the song data are described. Various pieces of information relating to song data include initialization information of the performance reproducing unit 105A or 105B when reproducing the song data, information indicating that the song data is normal song data, and the like.
[0013]
Next, the track data includes a control track, an accompaniment track, and a rhythm track.
As shown in FIG. 3, each track describes event data indicating the contents of processing, time data indicating timing for executing processing corresponding to each event data, and the like. In the present embodiment, the time data is indicated by a delta time (Δt) indicating a time interval between processes corresponding to each event data.
First, the control track is a track in which control information for performance playback is described. For example, a beat mark BM indicating a change in tempo, a time mark HM indicating a change in time, and a start of a playback portion during a medley performance. Various marks such as a medley start mark MS indicating the position and a medley end mark ME indicating the end position of the reproduction portion during the medley performance are described as the event data.
Next, the accompaniment track and the rhythm track are tracks in which specific information regarding the musical sound to be generated in the performance reproducing units 105A, B, and M is described. As the event data, for example, MIDI (Musical Instrument Digital Interface) data is used.
As shown in FIG. 3, the accompaniment track includes event data Ev1, Ev2,... Indicating pitches and timbres to be sounded and delta time data Δtb1, Δtb2,... Indicating time intervals between the event data Ev. It is described alternately.
When the music data illustrated in FIG. 3 is reproduced, the CPU 101 executes the process based on the event data Ev1 when Δtb1 elapses, and when Δtb2 elapses after executing the process based on the event data Ev1. Processing based on the event data Ev2 is executed.
[0014]
Next, FIG. 2 (2) shows the structure of medley song data showing a constant tempo and rhythm pattern during the medley performance according to the present invention.
The medley song data includes header, track data, intro data for instructing performance of the intro part, and ending data for instructing performance of the ending part.
The track data includes a control track, a main rhythm track, and a sub-rhythm track, and has a data structure in which only the rhythm pattern is played except for the intro part and the ending part during the medley performance.
Also, by having a plurality of rhythm tracks, it is possible to selectively perform a rhythm pattern corresponding to the time signature of a song played as a medley performance song during the medley performance (the medley section of the normal song data shown in FIG. 2 (1)). It has become.
[0015]
2. Operation of the embodiment
Next, the operation of the present embodiment having the above-described configuration will be described.
[0016]
2-1. Overview processing
FIG. 4 is a flowchart showing an outline of the operation of the embodiment.
First, the CPU 101 reads out song data corresponding to the inputted song number (S100), and determines whether or not the song data to be played is medley song data (S200).
If it is determined that the music is medley music data (S200; YES), a medley performance process described later is performed (S300), and when the performance is completed, the process proceeds to step S100 to read the next music data.
On the other hand, if it is determined in step S200 that the read music data is not medley music data (S200; NO), normal performance processing is performed (S400), and the process proceeds to step S100.
[0017]
The requested song number can be input at any time via the operation unit 109, and the input number is queued in the request queue areas RQ1 to RQn of the RAM 104 as shown in FIG. ing.
That is, in the present embodiment, the RAM 104 has a request cue that is an area for storing a song number as a normal request, and a medley cue that is an area for storing a song number of a medley performance song played during a medley performance. Is provided.
The music numbers stored in the respective queues via the operation unit 109 are read out in the stored order.
[0018]
2-2. Medley performance processing
Next, the medley performance process shown in step S300 of FIG. 4 will be described in more detail.
[0019]
(1) Outline of medley performance processing
First, the outline of the medley process will be described with reference to FIG.
In the figure, the diagrams shown as the song A and the song B show an outline of the flow of songs of the medley performance song (the song corresponding to the song number queued in the request queue). As shown in the figure, a mark indicating a medley section is attached to the control track in each piece of music data. Here, a section from the medley start mark MSa to the medley end mark MEa of the tune A is defined as a medley section A, A section from the medley start mark MSb to the medley end mark MEb of the song B is defined as a medley section B.
[0020]
In addition, the figure shown as medley in the figure shows an outline of the flow of music during the medley performance. In the example shown in this figure, the performance playback unit 105M plays the rhythm part of the medley song data, the performance playback unit 105A plays the medley section A, and the performance playback unit 105B plays the medley section B. .
The music that is queued in the medley cue of the RAM 104 next to the music B is played by the performance playback unit 105A, and the music that is queued next is played by the performance playback unit 105B. In this way, the performance reproduction units 105A and 105B are alternately used to perform medley. Performance playback unit 105 M So, only the rhythm is played consistently, except for the intro part and the ending part.
Even when a request is not input and a song number is not queued, the performance playback unit 105 for a certain period (four measures in this embodiment). M Only the rhythm pattern is played, and the monitor 108 prompts the input of the music number. If the song number is still not input, play the ending part and finish the medley performance.
[0021]
(2) Medley performance processing flow
Next, the medley performance process will be described with reference to the flowchart shown in FIG.
First, the CPU 101 supplies intro data to the performance reproducing unit 105M to perform the intro part (S301). When the intro performance is started, the character prompting the input of the music number requested as the medley performance music is displayed on the monitor (S302). Here, the music number input via the operation unit 109 is queued in the medley cue of the RAM 104.
Next, the CPU 101 determines whether or not the song number is queued in the medley cue (S303). If it is determined that the song number is not queued (S303; NO), then the song number is next. It is determined whether or not a certain period has passed without input (S304). If it is determined that the certain period (performance time for four measures) has not elapsed (S304; NO), the process proceeds to step S302. In step S302, the display prompts the user to input the music number again.
On the other hand, if it is determined in step S304 that a certain period has elapsed (S304; YES), the process proceeds to step S314 to perform the ending portion.
[0022]
If it is determined in step S303 that the song number is queued in the medley cue (S303; YES), the song corresponding to the queued song number is set as the medley performance tempo. At the same time, the process is shifted to a performance process (S305 to 310).
[0023]
First, the CPU 101 performs processing for matching the tempo of the performance music to the tempo of the medley music (S305). The tempo of the performance music is described as a tempo mark in the control track of the music data (see FIG. 3). The CPU 101 reads the tempo mark of the control track in the medley section of the medley music data and the medley performance music data, and determines the tempo of the performance music.
[0024]
Here, the tempo matching process will be specifically described with reference to an example shown in FIG. FIG. 8 is a diagram showing the time interval of one quarter note corresponding to the tempo of normal song data and medley song data.
First, FIG. 8 (1) shows the time interval of one quarter note corresponding to the tempo of normal song data, and (3) shows the time interval of one beat of quarter note corresponding to the tempo of medley song data. Show.
In normal performance, performance processing is performed according to the intervals shown in (1). That is, if the delta time data corresponding to one beat of a quarter note is Δtbn, event data to be executed next to the event data indicating one beat of a quarter note is executed after Δtbn.
However, in the case of a medley performance, normal tune data is played at the tempo indicated by the medley tune data, so event data is executed at a different timing from the delta time data described in the normal tune data as shown in (2). Will do.
Therefore, in this embodiment, a tempo matching process that defines a change in event data processing timing is performed (FIG. 7: step S305).
[0025]
Specifically, as shown in FIG. 8, assuming that the tempo of a normal song is TA and the tempo TM of a medley song, the length of one beat of a quarter note during medley performance is 60 / TM seconds. Become. Therefore, in the normal music data, when delta time data indicating 60 / TA seconds, which is the length of one beat of a quarter note, is read, the CPU 101 must process it as 60 / TM seconds.
For example, when the tempo of the medley song is TM = 120, the length of one quarter note is ½ second (60/120 seconds). On the other hand, if the tempo of the normal music data is TA = 90, the length of one quarter note beat is 3/4 seconds (60/90 seconds).
Therefore, the processing must be performed by changing 1/2 second to 3/4 second. In step S305 shown in FIG. 7, if the delta time data of the normal music is Δtbn, Δtbn is (1/2) / (3/4) = 2/3 = TA / TM times (Δtbn (TA / TM)). The process of changing to the time interval is performed, and this coefficient TA / TM is stored in the RAM 104.
The tempo matching process is performed every time a tempo mark is read from the control track.
Thus, by performing the tempo matching process, the music data used for the normal performance can be used as the medley performance music. Therefore, the medley music data according to the present invention only needs to produce data indicating the tempo and the rhythm.
[0026]
Referring to FIG. 7 again, when the tempo matching process in step S305 is completed, CPU 101 is described in the control track of normal song data and medley song data. Beat The mark is read to determine whether or not the time signature of the medley music data matches that of the normal music data (S306).
If it is determined that the time signatures do not match (S306; NO), the rhythm track to be used is changed (S307). Here, a process is performed in which the rhythm track using the rhythm track corresponding to the time signature of the normal music data is selected from the track data of the medley music data. For example, if the performance song has a 3/4 time signature and the main rhythm track of the medley song data has a 4/4 time signature, in step S307, a process of changing the rhythm track to be used to a sub-rhythm track is performed. Do.
When it is determined in step S306 that the time signatures match (S306; YES), and after the rhythm track changing process (S307) is completed, the CPU 101 performs a performance process of the musical composition (S308). Specifically, event data described in the accompaniment track of the normal music data is sequentially read out, and a performance signal is generated in the performance reproduction unit 105A.
Here, the delta time data in the normal music data is changed to a time corresponding to the tempo matching process performed in step S305 and executed.
[0027]
Then, it is determined whether or not there is a tempo mark or a time signature for instructing a change in tempo or time signature in the control track of the normal song data (S309). If it is determined that such a change exists (S309; (YES), the process proceeds to step S305, and the tempo adjustment process is performed again according to the tempo to be changed (S305). Then, a rhythm track change process is performed as necessary (S307), and a performance process corresponding to the readout time calculated by the tempo adjustment process is performed (S308).
[0028]
On the other hand, if the tempo mark or the time signature mark is not read in the determination in step S309 (S309; NO), it is next determined whether or not the medley end mark has been read from the control track of the normal song data. (S310).
If the medley end mark has not been read (S310; NO), it is necessary to continue playing the music data. Therefore, the process proceeds to step S308 to read the next event data and perform the performance process. (S308).
However, if the medley end mark is read in the determination in step S310 (S310; YES), it is necessary to end the performance of the music data and shift to the next queued music.
Therefore, the CPU 101 first determines whether or not a song number is queued in the medley cue of the RAM 104 (S311), and if it is determined that there is a queued song number (S311; YES), Bridge processing for smoothly connecting the performance of the next song from the performance is performed (S312).
Here, as the bridge processing, it is assumed that the performance of the previous song is faded out and the performance of the next song is faded in. Therefore, in the bridge section, the performance playback unit A system and the performance playback unit B system are simultaneously generating musical tone signals.
When the bridge process ends and the process completely shifts to the performance of the next song, the process shifts to step S308, and the performance process of the next song is performed in the performance reproducing unit 105B.
[0029]
In this way, the CPU 101 controls the medley song data in the process of performing the medley performance while generating the musical tone signal by alternately using the performance playback unit 105A and the performance playback unit 105B. It is determined whether or not an ending mark has been read from the track (S313). If the ending mark is not read (S313; NO), the process proceeds to step S302, and a display prompting the monitor 108 to input the song number is performed (S302).
On the other hand, if it is determined that the ending mark has been read (S313; YES), the tune being played is ended, the ending data of the medley tune data is read, and the performance playing unit 105M performs the ending (S314). ), The process returns to the main routine (see FIG. 4).
The medley performance process described above is specifically as follows.
[0030]
(3) Specific operation of the embodiment
Here, specific processing of the medley performance in the present embodiment will be described with reference to FIG.
For example, when it is determined that the song number 1001 queued in the request queue RQ2 shown in FIG. 5 is a medley song (FIG. S200; YES), first, the performance reproduction unit 105M is initialized and corresponds to the song number 1001. Music data intro data and rhythm track playback are started (FIG. T0). Here, first, the data of the main rhythm track is reproduced.
At this time, the monitor 108 displays a message prompting the user to input a medley song number. Then, the music number input from the operation unit 109 after the medley process is started (after t0) is sequentially stored in the medley queues MQ1 to MQn of the RAM 104 (see FIG. 5).
[0031]
Next, the CPU 101 refers to the medley queue in the RAM 104 and starts the reproduction process of the medley section in order from the top area (t1). As shown in the example of FIG. 5, when the song number A000 is queued, each piece of event data of the normal song data corresponding to the song number A000 is first played back by the performance playback unit 105A.
Here, it is assumed that the tempo mark and the time signature are read at the head of the control track in the medley section of the music A000, and the time indicated by the time signature is different from the time signature of the medley music data. CPU 101 Performance The rhythm track of the medley song data to be played back by the playback unit 105M is changed to a subtrack. Then, after t1 shown in FIG. 9, the sub-rhythm track is reproduced.
At this time, in the performance reproducing unit 105A, the accompaniment track data of the song A000 is reproduced, and the lyrics of the song A000 are displayed on the monitor 108. From the sound system 107, the rhythm parameters of the sub-rhythm track are synchronized with the tempo of the song 1001. Tan The musical tone of song A000 placed on is output.
[0032]
Next, at t2 in FIG. 9, the medley end mark is read from the control track of the music piece A000, and the process proceeds to a bridge process with the performance of the music piece B000 that is queued next. Assuming that the time signature indicated by the time signature of the music B000 read out at t2 is 4/4 time like the music 1001, the CPU 101 changes the rhythm track to be reproduced in the performance reproducing unit 105M to the main rhythm track again. .
Then, at t3, the music performance processing is completely transferred from the performance reproduction unit 105A to the performance reproduction unit 105B, and the lyrics of the music B000 are displayed on the monitor 108.
Next, when the medley end mark is read out from the control track of the song B000 at t4, the performance in the performance playback unit 105B is faded out and finished.
Here, since the music number to be played next is not queued in the medley cue, the CPU 101 performs a display prompting the monitor 108 to input the music number. At this time, only the medley rhythm (main rhythm) is output from the sound system 107.
When a certain period (four bars in this embodiment) elapses from t4 and t5 is reached, if no song number is input and no song number is queued in the medley cue, the performance reproducing unit 105M Play the ending data and finish the medley performance.
[0033]
In this way, normal song data and medley song data that specifies the tempo and rhythm that unify the entire medley are stored, and during medley performance, normal song data is played back according to the rhythm and tempo of the medley song data. Even when arbitrary music data is selected from the music data and the medley performance is performed, a sense of unity as a whole medley can be obtained.
Further, since the medley song data has a rhythm pattern corresponding to a plurality of time signatures, it is possible to select a rhythm pattern according to the time signature of the normal song data, and to perform more naturally.
[0034]
3. Modified example
The present invention is not limited to the above-described embodiments, and various modifications as described below are possible.
[0035]
In the above embodiment, the tempo at the time of medley performance is described in the medley song data. However, the tempo is not limited to this, and the user may arbitrarily set the tempo using the operation unit 109.
[0036]
In the above embodiment, the key control is not touched. However, when the keys of the selected music pieces are different, the keys may be changed so as to be the same key as a whole. In this case, for example, a mark for designating a key may be described in the medley music data, or the user may designate a key using the operation unit 109. If it does in this way, even when the music from which a key differs arbitrarily is chosen, it becomes possible to sing now easily.
In addition, since keys that are easy for a user to sing may differ depending on the song, even if the user designates a key so that he / she can easily sing, when the song is changed, the key is set back to an appropriate key setting specified by the song data. Thus, when the user wants to change the key setting for the song, the key setting may be performed again.
[0037]
In the above embodiment, the medley section is determined based on the medley start mark MS and the medley end mark ME set in advance. However, the user may be able to specify an arbitrary section. For example, a mark such as a rust mark, No. 1 or No. 2 may be described so that any one of these marks can be designated as a start or end position. For example, an end button provided on the operation unit 109 May be terminated when the user operates.
[0038]
In the above-described embodiment, a plurality of performance playback units are provided (performance playback units 105A, B, and M). However, the present invention is not limited to this. May be used.
[0039]
Further, a medley selection mode may be provided so that the user can easily select the medley music data. For example, rhythm names and tempos such as “samba” and “cha-cha-cha” are displayed on the display unit 108 as a list corresponding to the music numbers. Then, a desired pattern may be selected from the displayed list. In this case, the sample rhythm may be played by moving the cursor to the rhythm name on the list.
[0040]
【The invention's effect】
As described above, according to the present invention, a medley performance that provides a sense of unity as a whole can be achieved even in a medley performance that connects arbitrary songs.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment.
FIG. 2 is a diagram showing the composition of song data.
FIG. 3 is a diagram showing a structure of track data.
FIG. 4 is a flowchart showing an outline of the operation of the embodiment.
FIG. 5 is a diagram illustrating an example of queuing.
FIG. 6 is a diagram showing an outline of a medley performance.
FIG. 7 is a flowchart showing a medley performance process.
FIG. 8 is a diagram for explaining tempo matching processing;
FIG. 9 is a diagram illustrating a specific operation of the embodiment.
[Explanation of symbols]
101... CPU, 103... Hard disk, 104... RAM, 105 A, 105 B, 105 M... Performance playback unit, 106 ... mixer, 107 ... sound system, 108 ... monitor, 109 ... operation unit

Claims (3)

A karaoke apparatus comprising storage means, selection means, reproduction means, and control means,
The storage means stores medley information and song data,
The medley information includes a plurality of rhythm tracks corresponding to the time signature and information for determining the tempo,
The song data includes a rhythm track and other tracks, and a medley playback section with a set time signature is set.
The selection means enables selection of medley information and song data,
The reproduction means reproduces the song data and the rhythm track according to the control of the control means,
When the medley information is selected, the control means performs a process of changing the medley reproduction section of the selected song data and causes the reproduction means to sequentially reproduce,
The change process changes the tempo of the medley section to be reproduced to the tempo determined in the medley information, and changes the rhythm track of the medley section to be reproduced to the rhythm track in the medley information corresponding to the time signature.
Mosquitoes Raoke apparatus. The reproduction means includes first and second reproduction units and a synthesis unit.
The first playback unit plays other tracks,
The second playback unit plays the rhythm track,
The combining unit combines and outputs the outputs of the first playback unit and the second playback unit.
Karaoke apparatus according to 請 Motomeko 1. When sequentially playing back the medley playback section, the control means fades out the previous medley playback section and causes the playback means to play back by fading in the subsequent medley playback section.
Karaoke apparatus according to 請 Motomeko 1.

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