JP3750699B2 - Music playback device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a 'KARAOKE' machine capable of controlling a performance tempo and the volume of music by a method waving a baton. SOLUTION: An acceleration signal showing the acceleration detected by an acceleration sensor provided on the baton is sent from the baton to a controller, and a CPU in the controller operates the number of times that the acceleration a becomes maximum and minimum at a step 100 to 120, that is, the number of times that the direction waving the baton 10 is changed. Succeedingly, at the step 130 to 150, the time required for waving one musical time much of the music is operated, and at the step 160 to 170, whether the tempo is faster or later than the original tempo of the music is decided, and when later, whether or not it is too later is decided at the step 180, and when not too later, the tempo corrected at the step 190 is written in as the new rhythm data at the step 200.

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a baton and a musical sound reproducing apparatus capable of controlling the tempo of performance by the manner of waving the baton.
[0002]
[Prior art]
  2. Description of the Related Art Conventionally, a karaoke apparatus that performs karaoke by displaying a background image and lyrics image for karaoke on a monitor is known as an example of the above-described music sound reproducing device.
[0003]
[Problems to be solved by the invention]
  By the way, when karaoke is performed by a plurality of people using the karaoke apparatus, not only the singer but also the listener participates in the karaoke, and the place is excited and the karaoke becomes fun.
  However, at the beginning of karaoke, the listener participates in karaoke by clapping to the rhythm of the song or by playing an instrument such as a tambourine. You can no longer participate in karaoke, such as starting social conversations with other people.
  This is because the clapping of the listener is a passive and monotonous action that is performed at the tempo of the song.
  In other words, the performer is a singer and the listener is just a spectator.
  As described above, the above-mentioned conventional apparatus has a problem that the means for the listener to participate in karaoke is passive, so that the person gets bored quickly and it is difficult to maintain the excitement of the place.
[0004]
  Therefore, the present invention has an object to realize what enables the listener to maintain the excitement of the place for a long time by directly participating in karaoke.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, according to the present invention, in the first aspect of the present invention, there is provided a baton main body and the baton main body.A first acceleration sensor that detects a first acceleration that moves in one direction, and a second acceleration sensor that detects a second acceleration that moves in a direction different from the one direction.And an output means for outputting an acceleration signal indicating the acceleration detected by the acceleration sensor to the outside of the baton body.And a calculation means for detecting a change in the direction of movement of the command stick main body based on an acceleration signal output from the output means, and calculating a period of the change, and MIDI data. Music reproducing means for reproducing the recorded music information at a predetermined tempo and a predetermined volume, a MIDI sound source for outputting sound data when the MIDI data is written, and the MIDI data to the MIDI sound source at a predetermined writing speed. Writing means for writing, volume changing means for changing the predetermined volume based on the acceleration signal output from the output means, and how much the reproduction tempo of the music information is tracked according to the tempo of shaking the baton A plurality of buttons for setting the correction value, and changing the predetermined tempo based on the period calculated by the calculation means, In addition, the tempo of shaking the baton based on the calculated period is obtained, and if the obtained tempo is different from a preset tempo, the playback tempo of the music information is operated among the plurality of buttons. A playback tempo changing means for correcting by a correction value set corresponding to the button being set,Adopt technical means that is provided.
[0006]
  In the invention according to claim 2, according to claim 1,Music playback deviceIn the aboveThe reproduction tempo changing means compares the calculated tempo with the preset tempo, and if the difference between the calculated tempo and the preset tempo is less than a predetermined value, the calculated tempo If the difference is larger than the predetermined value, the process returns to the comparison process without correcting the obtained tempo.Adopt technical means.
[0007]
  In the invention according to claim 3, according to claim 1 or claim 2,In the musical sound reproducing apparatus, the reproduction tempo changing means gradually decreases the correction value as the reproduction of the music information progresses.Adopt technical means.
[0008]
[0009]
[0010]
[Action]
  In the first aspect of the present invention, the acceleration sensor provided in the baton body detects the moving acceleration of the baton body, and the detected acceleration is output to the outside of the baton body by the output means. The
  That is, the tempo of the music can be changed by changing the playback speed of the music by the musical sound playback device in response to the change in the acceleration output to the outside.
  Therefore, for example, as described in the embodiments of the invention later, the listener can change the tempo of the singer's singing by directing with the above-mentioned conductor, so that the listener can directly participate in karaoke. be able to. As a result, there is a change as compared with the case where the clapping is performed monotonously, so that the excitement can be sustained for a long time without getting bored.
[0011]
  Also onThe acceleration sensor includes a first acceleration sensor that detects a first acceleration that moves in one direction of the conductor rod body, and a second acceleration that detects a second acceleration that moves in a direction different from the one direction. Since it consists of an acceleration sensor, even if the command stick is swung in various directions, the acceleration in the swung direction can be obtained by calculating the vector sum of the first acceleration and the second acceleration. Can be sought.
  In other words, the tempo can be controlled even if the baton is swung in any direction, so that the listener with the baton can express his own personality and feel like the conductor.
[0012]
  Also, ActingBased on the acceleration signal output from the output means, the calculation means detects a change in the direction of movement of the baton main body and calculates the period of the change..
[0013]
  further,UpSince the volume changing means for changing the predetermined volume based on the acceleration signal output by the output means is provided, the music sound reproduction that can change the playback volume of the music information by the manner of swinging the baton An apparatus can be realized.
  Therefore, for example, as described in the embodiments of the invention to be described later, the performance volume of a song can be increased / decreased by changing the width of the baton, so that emotional control can be performed.
  Furthermore, the playback tempo of the music information is changed based on a plurality of buttons for setting a correction value for how much the playback tempo of the music information is to be followed according to the tempo of the baton and the period calculated by the calculation means. In addition, when the tempo of shaking the baton based on the calculated period is obtained, and the obtained tempo is different from the preset tempo, the reproduction tempo of the music information is operated among the plurality of buttons. Since there is a playback tempo change means that corrects with the correction value set corresponding to the buttonPlay music information by swinging the batontempoIt is possible to realize a musical sound reproducing apparatus that can change the sound.In addition, since the correction value can be changed by operating the button, even if there is a difference in the skill level of the command, the playback tempo can be determined by operating the button corresponding to the command level of skill. Does not deviate significantly from the original tempo, so there is no risk of difficulty in singing.
  Also,VolumeIn combination with this control, the tempo and volume can be controlled.
[0014]
  In the second aspect of the invention, the playback tempo changing means does not correct the obtained tempo when the difference between the obtained tempo and a preset tempo is larger than a predetermined value. There is no fear that it will be difficult to sing because the tempo to be shaken is too slow or too fast.
  In the invention according to claim 3, the reproduction tempo changing means can gradually reduce the correction value as the reproduction of the music information progresses.
  In other words, the person who shakes the conductor stick gradually gets used to conducting as the music information playback progresses and approaches the original tempo, so the correction value gradually decreases as the music information playback progresses. By doing so, the person who shakes the command stick can conduct the command at the original tempo, and can improve the command.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, a first embodiment of a baton and a musical sound reproducing apparatus according to the present invention will be described with reference to the drawings. In each of the following embodiments, a so-called communication karaoke apparatus in which music is provided using a communication line will be described as a representative example of the musical sound reproducing apparatus.
  First, the main configuration of the baton of the first embodiment will be described with reference to FIG.
[0016]
  As shown in FIG. 1, the baton 10 is provided with a baton body 11 formed in the shape of a slender, elongate bar, and a grip formed in an oblong egg shape at the base of the baton body 11. A member 12 is attached. An acceleration sensor 13 that is a first acceleration sensor that detects a first acceleration when the baton 10 is shaken is embedded in the vicinity of the tip of the baton body 11, and a surface orthogonal to the acceleration sensor 13. An acceleration sensor 14 is embedded as a second acceleration sensor that detects a second acceleration in a direction orthogonal to the detection direction of the acceleration sensor 13.
[0017]
  In addition, a transmission antenna that transmits an acceleration signal indicating the acceleration detected by the acceleration sensors 13 and 14 is provided at the lower end of the grip member 12.BodyIn the vicinity of the base of 11, a power switch 16 is provided for operating each circuit described later built in the baton 10.
[0018]
  Next, the configuration of the acceleration sensor and the configuration of the circuit built in the baton 10 will be described with reference to FIGS.
  FIG. 2 is a partial cross-sectional view of the baton main body 11 showing the configuration of the acceleration sensor, and FIG. 3 is a block diagram showing the circuit configuration.
  As shown in FIG. 2, the acceleration sensor 13 includes a thin and plate-like piezoelectric element 13a. The upper electrode film 13b is formed on the upper surface of the piezoelectric element 13a, and the lower electrode film 13c is formed on the lower surface. It is integrally formed. A plate-shaped metal member 13d is integrally formed on the upper surface of the upper electrode film 13b, and a plate-shaped metal member 13e is integrally formed on the lower surface of the lower electrode film 13c. A DC voltage E is applied between 13c.
[0019]
  A lead wire 13f is connected to the upper electrode film 13b, a lead wire 13g is connected to the lower electrode film 13c, and both the lead wires 13f and 13g are connected to the detection circuit 20. The acceleration sensor 13 detects the acceleration of the baton 10 in the direction indicated by arrows Y1 and Y2 in FIG. 2 (hereinafter abbreviated as Y direction).
  The structure of the acceleration sensor 14 is the same as that of the acceleration sensor 13.
[0020]
  Further, as shown in FIG. 3, a signal conversion circuit 21 for converting a detection signal detected by the detection circuit 20 into a pulse signal for transmission to a control device of a karaoke apparatus, which will be described later, is provided inside the baton 10. And a transmission circuit 22 that modulates, amplifies, and oscillates the pulse signal converted by the signal conversion circuit 21. Further, a CPU 17 that controls the operation of each circuit, a RAM 18 that temporarily stores the calculation results of the CPU 17, a ROM 19 that stores a control program executed by the CPU 17, detection sensitivity data of the acceleration sensors 13 and 14, and the like. A CPU 17 and a battery 23 serving as an operating power source for each circuit are provided.
[0021]
  When the conductor 10 having the above configuration is swung in the Y direction shown in FIG. 2, the piezoelectric element 13a is distorted by the piezoelectric effect due to the moment of inertia of the metal members 13d and 13e, and the upper electrode film 13b and the lower electrode The voltage value applied to the electrode film 13c changes, and this change is detected by the detection circuit 20 via the lead wires 13f and 13g. The magnitude of the detected voltage change is proportional to the amount of distortion of the piezoelectric element, that is, the magnitude of the acceleration of the baton 10. The voltage change detected by the detection circuit 20 is converted into an infrared pulse signal by the signal conversion circuit 21, and then transmitted from the transmission antenna via the transmission circuit 22 as an acceleration signal indicating acceleration.
  The transmission circuit 22 and the transmission antenna correspond to the output means of the present invention.
[0022]
  Next, the principle by which the tempo of music can be controlled by shaking the baton 10 will be described with reference to FIGS.
  FIG. 4A is an explanatory diagram showing the acceleration direction of the command stick 10 when the command stick 10 is swung in three quarters, and FIG. 4B shows the command stick 10 swung in the direction of arrow F2. FIG. 7C is a vector diagram showing acceleration components when the baton 10 is swung in the direction of arrow F1. FIG. 5 is an explanatory diagram showing changes in the direction of acceleration of the baton 10.
[0023]
  As shown in FIG. 4A, when the baton 10 is turned in the order of arrows F1, F2, and F3 and swung with a three-quarter beat, the acceleration at the portion indicated by the arrow F2 is the same as that shown in FIG. As shown in B), the maximum is when the baton 10 starts to move, then becomes 0 and becomes minimum when the movement stops.
  That is, the time when the acceleration changes from the maximum to the minimum or the time when the acceleration changes from the minimum to the maximum is the time when the direction in which the baton 10 swings is changed.
[0024]
  Then, as shown in FIG. 5, the times t1, t3, t5,... When the acceleration is maximum and the times t2, t4, t6,. By calculating, the tempo at which the baton 10 is swung can be obtained.
  Further, as shown by an arrow F1 in FIG. 4A, the acceleration when the baton 10 is swung obliquely with respect to the detection direction of the acceleration sensors 13, 14 is as shown in FIG. It can be expressed by the sum of the vector X component and the vector Y component, and its magnitude is F1 = (X2 + Y2) 1/2.
  As described above, according to the baton 10 of the present embodiment, the acceleration sensors 13 and 14 can detect the magnitude and direction of the acceleration of the baton 10 and transmit the detection signal.
[0025]
  Next, the main configuration of the karaoke apparatus of the first embodiment will be described with reference to FIG.
  As shown in FIG. 6, the karaoke apparatus 30 is provided with a CRT monitor (hereinafter abbreviated as CRT) 32 for displaying karaoke background video and lyrics video, and a CRT 34 for monitoring a singer. Further, a control device 40 is provided which receives a signal transmitted from the baton 10 by a receiving antenna and performs control (hereinafter abbreviated as tempo control) for changing the tempo of the music based on the received signal. Yes.
[0026]
  In addition, the control device 40 controls the storage of music data as music information, selection of music, reservation of music, etc. via the communication line 73, mixing of audio input from the microphones 85 and 86 and karaoke music as music, audio Voice control such as volume balance, echo adjustment, delay adjustment, pitch change (key change) between karaoke and karaoke songs, and various controls such as video control such as switching, synthesis, and division of video displayed on CRT 32 and 34 I do.
[0027]
  Furthermore, the karaoke device 30 reproduces the sound signal output from the amplifier 36 as sound, and an amplifier 36 that performs amplification, treble and bass control (tone control) of the sound signal output from the control device 40. A set of floor-type speakers 83, 83, a set of speakers 84, 84 for ceiling mounting, and a transmitter 90 for remotely operating the control device 40 are provided.
  The amplifier 36, the control device 40, the speakers 83 and 83, and the speakers 84 and 84 correspond to the music reproducing means of the present invention.
[0028]
  Next, the equipment of the control device 40 will be described with reference to FIG.
  FIG. 7A is an explanatory diagram of the front panel of the control device 40, and FIG. 7B is an explanatory diagram of the rear panel of the control device 40.
  As shown in FIG. 7A, on the front panel of the control device 40, the numeric keypad 41 consisting of buttons 0 to 9 for inputting the number of the music to be selected and the control device 40 are set in a music selectable state. Also, a music selection button 42 for confirming the music selection is provided. On the numeric keypad 41, a music selection number display body 43 for displaying the number of the selected music in LED with a 5-digit number is provided. Yes.
[0029]
  Also, on the left side of the music selection number display 43, there is provided a reserved music number display 44 for displaying the number of songs reserved for performance with an LED, and below that there is a cancellation for canceling the reservation. There are provided a button 45, a performance stop button 46 for stopping performance, a re-singing button 47 for re-singing from the beginning while singing, and an interrupt button 48 for interrupting and reserving between reserved songs. Yes.
[0030]
  Further, to the right of the numeric keypad 41, there are provided a flat key 49 for lowering the key of the song to be played, a standard key 50 for standardizing the key, and a sharp key 51 for increasing the key. Below, a vocal button 52 for setting the volume of the vocal melody line, a 2 chorus cut button 53 for cutting the second chorus, and a follower cut button 54 for cutting the later part of the song are provided. .
  Below that, a karaoke switching button 55 for switching between a mode for performing karaoke and a mode for not performing karaoke, and data input via the communication line 73 are switched from song data to BGM, cable broadcasting, television broadcasting, and the like. An input switching button 56 and a service button 57 for switching the display of the CRTs 32 and 34 to the display of service information provided by the karaoke shop are provided.
[0031]
  Furthermore, below these buttons, a tempo control button 110 for starting tempo control by the baton 10 is provided, and below that, how much the tempo of the performance is to be followed in accordance with the swing of the baton 10. There are provided an elementary button 107, an intermediate button 108 and an advanced button 109 for setting the level. In addition, a light receiving unit 58 that receives optical signals transmitted from the baton 10 and the transmitter 90 is provided at the upper left of the front panel, and a power button 59 that activates the power of the control device 40 is provided at the lower left. Is provided.
[0032]
  Further, as shown in FIG. 7B, a communication terminal for connecting a communication line 73 for receiving song data distributed from a server 72 (see FIG. 9) having song data to the rear panel of the control device 40. 60 is provided on the right side of the communication terminal 60. A video output terminal 62 connected to a video input terminal (not shown) of the CRT 32 and a video connected to a video input terminal (not shown) of the CRT 34 are provided. An output terminal 63 is provided. On the right side, an audio output terminal 61 connected to an audio input terminal (not shown) of the amplifier 36 is provided.
[0033]
  Although not shown, the amplifier 36 has a microphone terminal to which the microphones 85 and 86 are connected, a balance adjustment knob for adjusting the volume balance between the sound input from the microphones and the karaoke song, and the application of echo. An echo adjustment knob for adjusting the condition and a delay adjustment knob for adjusting the degree of delay are provided.
[0034]
  Next, the configuration of the transmitter 90 will be described with reference to FIG.
  A power button 91 for turning on and off the power of the control device 40 is provided at the upper left of the transmitter 90. On the upper right, a clap button for setting to reproduce the sound of applause after the performance of the song is completed. 93 is provided, and a mode switching button 92 for switching the mode (type) of applause is provided on the left side. Below these buttons, a vocal button 94, a 2 chorus cut button 95, and a sequel cut button 96 are provided that perform the same operation as the buttons provided on the control device 40.
[0035]
  Below these buttons, the flat key 97, standard key 98, sharp key 99, ten key 100, music selection key 101, performance stop key 102, cancel key 103, and re-sung, as with the buttons provided on the control device 40. A key 104 and an interrupt key 105 are provided.
  When each of the buttons and keys is pressed, a signal corresponding to the button or key is transmitted from the LED built in the transmitter 106.
[0036]
  Next, the configuration of the control system of the control device 40 will be described with reference to FIG.
  The control device 40 is provided with a CPU 64 that performs the tempo control, audio control, video control, reservation of the performance order of songs, change of the performance order, and the like according to a program. The CPU 64 includes a RAM 65 that temporarily stores song number data indicating the number of the selected song, a ROM 66 that stores control commands corresponding to commands transmitted from the transmitter 90, a real-time counter 67, and a CPU 64. The RAMs 68 and 69 for temporarily storing the calculation results obtained by the above are connected to the EEPROM 70 in which specified values T1 and T2 are stored, timer tables in which new rhythm data C and timer values described later are associated with each other.
[0037]
  The CPU 64 is connected to a hard disk memory 71 that stores music data input from the server 72 via the communication line 73 and the communication terminal 60 and converted into digital signals by the communication modem 74. The hard disk memory 71 stores a program for causing the CPU 64 to execute the above-described controls and operation control of each circuit described later.
[0038]
  Further, the CPU 64 has a sequencer 76 that performs control to write MIDI data to the MIDI sound source 77 according to the count of the timer 78, and a sound control circuit 75 that inputs sound data output from the MIDI sound source 77 and converts it into an analog signal. Is connected. Further, the CPU 64 receives the background video data read from the CD-ROM playback device 112 in which the background video data is recorded and the lyrics video data in the song data stored in the hard disk memory 71 and displays them on the CRTs 32 and 34. As shown in FIG. 12, a video control circuit 79 that creates a video in which the lyrics video 202 is superimposed on the background video 200 or applies a telop 204 to the lyrics video 202 is connected as shown in FIG. Yes.
[0039]
  Further, the CPU 64 includes a light receiving circuit 80 that converts an optical signal received by the light receiving unit 58 into a digital signal, a display circuit 81 that outputs a display signal to an LED that lights when the various buttons are pressed, and a receiving antenna. Is connected to a receiving circuit 116 that converts the acceleration signal received by the digital signal into a digital signal and an input circuit 82 that inputs signals that change according to the operation of various buttons.
  The sequencer 76 and timer 78 correspond to the writing means of the present invention.
[0040]
  Next, a series of operation | movement of the karaoke apparatus 30 until a user selects music and karaokes is demonstrated.
  First, when the user points the transmitter 90 toward the control device 40 and presses the power button 91, the control device 40 is turned on, and the CRTs 32 and 34 and the amplifier 36 are activated in conjunction with this.
  Next, the music selection of the transmitter 90KeyWhen 101 is pressed, the music selection is enabled, and the numeric keypad 100 is pressed to input the song number of the song to be sung. At this time, each time the numeric key is pressed, the number corresponding to the pressed key is displayed on the CRT 32, 34 and the control device 40.SelectionIt is displayed on the song number display body 43 so that the song number can be confirmed.
  Note that the selection of music can be confirmed by blinking the displayed number.
[0041]
  Then, the song number input is completed and the song selectionKeyWhen the user presses 101, the entered music number is confirmed, and the music number display disappears after the blinking stops, and the CPU 64 transmits a request signal indicating a transmission request for music data corresponding to the music number to the server 72. Then, the server 72 retrieves and reads the song data of the song number indicated in the request signal from its own hard disk memory, and the read song data is transmitted to the control device 40 via the communication line 73 for communication. Is converted into data that can be processed by the CPU 64 by the modem 74 and temporarily stored in the hard disk memory 71.
[0042]
  Subsequently, the music data is read from the hard disk memory 71, and the MIDI data included in the music data is taken into the sequencer 76 and written into the MIDI sound source 77 according to the count of the timer 78. The sound source data of the portion where the MIDI data is written to the MIDI sound source 77 is output to the sound control circuit 75 and converted into an analog music signal that can be amplified by the amplifier 36. The music signal is output to the amplifier 36, amplified, output to the speakers 83 and 83, and the speakers 84 and 84, and reproduced by both speakers.
[0043]
  On the other hand, the lyric video data included in the song data is input to the video control circuit 79 and converted into a lyric video signal that can be displayed on the CRTs 32 and 34. The song data includes genre data for specifying the genre of the song, and background video data corresponding to the genre data is reproduced by the CD-ROM reproducing device 112 and input to the video control circuit 79. Are converted into background video signals that can be displayed on the CRTs 32 and 34. As shown in FIG. 12, the lyric video signal is a lyric video.202The background video signal is displayed on the CRTs 32 and 34 as the background video 200, respectively.
[0044]
  The sound input from the microphone 85 or the microphone 86 is mixed with the music signal by a microphone mixing circuit built in the amplifier 36, and the mixed signal is amplified by the amplifier 36 and then the speaker. 83 and 83 and the speakers 84 and 84, and a music signal and a sound signal are reproduced by both speakers.
  That is, the user can sing (karaoke) the selected song through the microphone 85 or the microphone 86 while watching the background video 200 and the lyrics video 202 displayed on the screens of the CRTs 32 and 34.
[0045]
  Next, tempo control by the CPU 64 will be described with reference to the flowcharts of FIGS. 10 and 11 showing the control contents.
  Note that the time data D indicating the time signature of a song such as three quarters, four quarters, and the tempo of the song, that is, the rhythm data B indicating the time required to play one measure of the song are stored in the hard disk memory. Suppose that it is included in the song data stored in 71 and read and stored in the RAM 69 when the song data is reproduced.
  First, when the listener presses the power switch 16 of the baton 10, each circuit built in the baton 10 is activated and acceleration can be detected. When the tempo control button 110 of the control device 40 is pushed, the tempo control program is executed. Hard disk memory71Are read into the RAM 65 and the tempo control is enabled.
[0046]
  When the listener shakes the conductor 10 with the holding member 12 of the conductor 10, the acceleration of the conductor 10 is detected by the acceleration sensors 13 and 14, and the acceleration signal indicating the detected acceleration is the command. The light is transmitted from the rod 10 and received by the light receiving unit 58 of the control device 40. The received acceleration signal is converted into a digital signal by the light receiving circuit 80, and the CPU 64 takes in the digital signal and calculates the acceleration α (step 100).
  The baton 10 and the control device 40 may be connected by a signal line, and an acceleration signal may be transmitted to the signal line.
[0047]
  Subsequently, the timing at which the calculated acceleration α changes from the maximum to the minimum or the timing at which the calculated acceleration α changes from the minimum to the maximum is detected. That is, the time t when the direction in which the baton 10 swings is changed is detected (step 110). Subsequently, the number of detections N at time t is calculated (step 120), and the time signature data D is read (step 130). Subsequently, based on the time signature data D, it is determined whether or not the number of detection times N has been detected for the time signature (step 140).
[0048]
  For example, as shown in FIG. 4 (A), assuming that a three-quarter beat song is shaken in a triangular shape by the conducting rod 10, the first arrow F1 has the maximum acceleration at the beginning of the swing (starting point of F1). The end of swing (end point of F1) is the minimum acceleration. In FIG. 5, the maximum acceleration is shown at time t1, and the minimum acceleration is shown at time t2. Similarly, at arrow F2, acceleration is maximum at time t3, acceleration is minimum at time t4, and at arrow F3, acceleration is maximum at time t5 and acceleration is minimum at time t6.
  That is, the timing at which the acceleration of the baton 10 is maximum or minimum exists once for each swing in one direction.
  Therefore, when the baton 10 is swung as shown in FIG. 4A, the number of times that the acceleration of the baton 10 changes from the maximum to the minimum or from the minimum to the maximum is 6.
  Therefore, in step 140, steps 100 to 140 are repeated until the number of detection times N at time t reaches 6.
  If the time is 4/4, repeat until N = 8.
[0049]
  When the number of detection times N is detected for the time signature, a time A from the first detection time to the last detection time is calculated. For example, in the above example, the time from t1 to t6 is calculated (step 150). Subsequently, the rhythm data B is read (step 160), and it is determined whether the time A is greater than the time B (step 170). If it is determined that the time A is larger, that is, the tempo at which the baton 10 is swung is If it is slower than the tempo, it is determined whether the magnitude is equal to or less than the specified value T1 (step 180).
  That is, if the speed of swinging the baton 10 is too slow, it is difficult to sing, so the tempo is not changed.
[0050]
  If the magnitude is equal to or less than the prescribed value T1, the time obtained by subtracting the correction value T2 from the time A is calculated as new rhythm data C (step 190), and the rhythm data B is rewritten to the new rhythm data C. (Step 200). Subsequently, when the rewritten new rhythm data C is a value different from the rhythm data B before being rewritten (step 210), the timer value corresponding to the new rhythm data C is stored in the timer table stored in the EEPROM 70. Is selected, and the timer value (period of the pulse signal) of the timer 78 is changed (step 220).
  That is, the writing speed of the MIDI data to the MIDI sound source is reduced.
[0051]
  Here, the correction value T2 is subtracted from the time A because the tempo control is adjusted to match the conductor's level.Medeis there.
  In other words, if the listener who is the conductor is good at recording the rhythm, the time A can be set in the new rhythm data C as it is, but if the person who is poor at recording the rhythm conducts the regulation Although it is below the value, the conductor may not be able to follow the progress of the song, making it difficult for the singer to sing.
[0052]
  In such a case, the time obtained by subtracting the correction value T2 from the time A is just a good tempo. The correction value T2 can be changed according to the level of the conductor, and the change is made by pressing the beginner button 107, intermediate button 108, and advanced button 109 provided on the front panel of the control device 40.
  In this case, the value of the correction value T2 is the largest when the elementary button 107 is pressed, the smallest when the advanced button 109 is pressed, and is set to an intermediate value when the intermediate button 108 is pressed. .
  Note that the correction value T2 is gradually decreased as the music progresses, considering that even those who are not accustomed to conducting at the beginning of the music performance will become accustomed as the music progresses. .
[0053]
  On the other hand, in step 170, time A istimeIf it is determined that it is less than or equal to B, that is, if it is determined that the tempo by the baton 10 is faster than the original tempo of the song, the process proceeds to step 172 and the time A istimeWhether it is smaller than B is determined. In this case, time A andtimeIf B is equal, there is no need to change the tempo, and the process returns to step 100. In step 172, time A istimeIf it is determined that it is less than B, time A andtimeIt is determined whether or not the difference from B is equal to or less than the specified value T3 (step 174). If it is greater than the specified value T3, the process returns to step 100.
  In other words, when the speed at which the baton 10 is swung is too fast, it becomes difficult to sing, so the tempo is not changed.
[0054]
  If the difference is equal to or less than the specified value T3, the time obtained by adding the correction value T2 to the time A is calculated as new rhythm data C (step 176), and the rhythm data B is rewritten to the new rhythm data C (step 176). Step 178). Here, the reason that the correction value T2 is added to the time A is that the tempo control is adjusted to match the level of the conductor as described above.Medeis there.
  The correction value T2 can be changed according to the level of the conductor, and the change is made by pressing the beginner button 107, intermediate button 108, and advanced button 109 provided on the front panel of the control device 40.
[0055]
  In this case, the value of the correction value T2 is the largest when the elementary button 107 is pressed, the smallest when the advanced button 109 is pressed, and is set to an intermediate value when the intermediate button 108 is pressed. .
  The correction value T2 is gradually reduced as the music progresses.
[0056]
  As described above, according to the baton and karaoke apparatus of the first embodiment, the control device 40 receives the detection signal indicating the magnitude and direction of the baton 10 acceleration transmitted from the baton 10, Based on the received detection signal, the CPU 64 in the control device 40 can calculate the acceleration and acceleration direction of the baton 10. Then, based on the calculated value, the tempo of the song can be changed.
  Therefore, since the listener can change the tempo of the song that the singer sings by holding the baton 10, the listener can actively participate in karaoke. You will not get bored and you will be able to maintain the excitement of the place, compared to the case where you can only participate.
[0057]
  Next, the baton and karaoke apparatus of the second embodiment of the present invention will be described with reference to the flowchart of FIG.
  The karaoke apparatus of the second embodiment is characterized in that the performance volume of a song can be controlled according to the acceleration at which the conductor 10 is swung.
  When the baton 10 is swung, a detection signal indicating the acceleration of the baton 10 is transmitted to the control device 40, and the CPU 64 in the control device 40 calculates the acceleration α based on the transmitted detection signal ( Step 300), the acceleration α is integrated twice to calculate the swing width L of the baton (Step 310).
[0058]
  Subsequently, it is determined whether a value (L−L1) obtained by subtracting the reference swing width L1 stored in advance in the RAM 68 from the swing width L is larger than 0 (step 320). Here, the reference swing width L1 is set to a swing width when the baton 10 is swung with a normal motion magnitude. If the swing width L is larger than the reference swing width L1, the level of the audio signal output from the audio control circuit 75 is increased (step 330).
  On the other hand, when the swing width L is smaller than the reference swing width L1 (step 322), the level of the sound signal output from the sound control circuit 75 is decreased (step 324).
[0059]
  Thus, according to the baton and karaoke apparatus of the second embodiment, the performance volume of the music can be controlled according to the width of the baton 10.
  For example, until the most exciting part of the song, the conductor 10 is controlled with a small swinging width, and when entering the rising part, the swinging volume is increased to increase or decrease the performance volume. You can add sharpness to the performance of the song. In addition, by combining with the tempo control of the first embodiment, the performance tempo and volume of the music can be controlled by the manner in which the baton 10 is swung, so that a performance with emotion can be realized.
  The performance volume can be changed by increasing or decreasing the level of the audio signal output from the audio control circuit 75 and turning the volume adjustment knob of the amplifier 36 with a motor or the like.
[0060]
  In the above embodiment, the case where the tempo control is performed in units of one beat (one measure) of the music has been described. However, the tempo control is performed in units of less than that or in units of one or more measures, for example, one chorus. Can also be configured. Moreover, it can also comprise so that the performance key of a music may be controlled according to the acceleration of the conducting stick 10, and it can also comprise so as to display the score by scoring the skill of conducting.
  Further, a plurality of LEDs can be mounted in the longitudinal direction of the surface of the baton 10 or on the front panel of the control device 40, and the number of LEDs can be increased or decreased in response to the acceleration of the baton 10. .
[0061]
  By the way, Step 100 and Step 110 executed by the CPU 64 function as arithmetic means of the present invention, and Step 120 to Step 220 areChange playback tempoFunctions as a means. Steps 300 to 330 function as volume changing means of the present invention.
[0062]
【The invention's effect】
  As described above, according to the present invention, since the performance tempo or performance volume of a song can be controlled by the manner in which the conductor is swung, the listener can directly participate in karaoke. Can be maintained for a long time.
  In addition, it has multiple buttons that set the correction value for how much the music information playback tempo should be followed according to the tempo of waving the baton, and it can be played by operating the button corresponding to the skill level of the conductor. Since the tempo can be prevented from greatly deviating from the original tempo, there is no possibility that the singer becomes difficult to sing.
[Brief description of the drawings]
FIG. 1 is an external explanatory view showing a main configuration of a baton according to a first embodiment of the present invention.
FIG. 2 is a partial cross-sectional view of a baton main body 11 showing a configuration of an acceleration sensor.
FIG. 3 is a block diagram showing a circuit configuration in the baton 10;
4A is an explanatory diagram showing the direction of acceleration of the command rod 10 when the command rod 10 is swung in three quarters, and FIG. 4B is a diagram showing the command rod 10 swung in the direction of arrow F2. (C) is a vector diagram showing an acceleration component when the baton 10 is swung in the direction of arrow F1.
FIG. 5 is an explanatory diagram showing a change in the direction of acceleration of the baton 10.
FIG. 6 is an external explanatory view showing the main configuration of the karaoke apparatus of the first embodiment.
7A is an explanatory diagram of a front panel of the control device 40, and FIG. 7B is an explanatory diagram of a rear panel of the control device 40. FIG.
FIG. 8 is a diagram for explaining the external appearance of a transmitter 90;
9 is a block diagram showing a configuration of a control system of the control device 40. FIG.
10 is a flowchart showing the contents of tempo control executed by a CPU 64. FIG.
FIG. 11 is a flowchart showing the content of volume control executed by a CPU 64;
FIG. 12 is an explanatory diagram showing a display on the CRT 32 in which a lyrics video is superimposed on a background video.
[Explanation of symbols]
  10 Conductor
  11 Conductor body
  12 Gripping member
  13, 14 Acceleration sensor
  13a Piezoelectric element
  13d, 13e metal parts
  15 Transmitting antenna
  16 Power switch
  22 Transmission circuit
  30 Karaoke equipment
  32, 34 CRT
  36 amplifiers
  40 Control device
  64 CPU
  71 Hard disk memory
  72 servers
  73 Communication line
  75 Voice control circuit
  76 Sequencer
  77 MIDI sound source
  78 timer
  90 Transmitter
110 Tempo control button
114 receiving antenna

Claims (3)

A command rod body, a first acceleration sensor that is provided on the command rod body and detects a first acceleration that moves in one direction of the command rod body, and a first acceleration sensor that moves in a direction different from the one direction. an acceleration sensor ing and a second acceleration sensor detecting a second acceleration, and output means for outputting an acceleration signal representing an acceleration detected by the acceleration sensor to the outside of the baton main body is provided baton When,
Based on the acceleration signal output from the output means, detecting the change in the direction of movement of the baton body, and calculating means for calculating the period of the change,
Music playback means for playing back music information composed of MIDI data at a predetermined tempo and a predetermined volume;
A MIDI sound source that outputs sound data when the MIDI data is written;
Writing means for writing the MIDI data to the MIDI sound source at a predetermined writing speed;
Volume changing means for changing the predetermined volume based on an acceleration signal output by the output means;
A plurality of buttons for setting a correction value of how much to follow the reproduction tempo of the music information according to the tempo of shaking the baton;
The predetermined tempo is changed based on the cycle calculated by the calculating means, and the tempo for shaking the baton is calculated based on the calculated cycle, and the calculated tempo is set in advance. The playback tempo changing means for correcting the playback tempo of the music information by a correction value set corresponding to the operated button of the plurality of buttons,
A musical sound reproducing apparatus comprising: The reproduction tempo changing means compares the calculated tempo with the preset tempo, and determines the difference when the difference between the calculated tempo and the preset tempo is a predetermined value or less. 2. The musical tone reproduction according to claim 1 , wherein a correction process for correcting a tempo is executed, and if the difference is larger than the predetermined value, the process returns to the comparison process without correcting the obtained tempo. Equipment . 3. The musical tone reproduction apparatus according to claim 1, wherein the reproduction tempo changing means gradually reduces the correction value as reproduction of the music information progresses .

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