JP2011107445A - Performance device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a performance device capable of displaying an image related to performance operation, at a comparatively low cost and in a simple configuration. <P>SOLUTION: A drum device 1 includes a drum pad in which a beat face for receiving beating operation functions as a screen. An image is displayed on the beat face by projecting the image relative to the beating operation from the rear face side of the drum pad, by a projector 4 arranged at the rear face side of the drum pad, and when the beating operation to the beat face is detected, sound corresponding to the position of the beat face on which the beating operation is performed is emitted by a sound source 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a performance device that produces sound by a striking motion.

  Various techniques for teaching the performance of musical instruments have been proposed. For example, to teach the position of fingers when playing a piano, etc., a technology that attaches an organic EL (electroluminescence) display with a thin film deposition structure to the entire keyboard of an electronic piano and displays the position of an exemplary hand on the display Is disclosed in Patent Document 1 below. Further, as a technique for teaching how to play a drum, a technique for displaying a performance part image showing movements of limbs used when playing a drum set on another display device is disclosed in Patent Document 2 below.

JP 2006-106095 A Japanese Patent Laid-Open No. 2002-116686

In the case of the technique disclosed in Patent Document 1, an organic EL display having a thin film deposition structure that can withstand piano key presses is necessary, and it is expensive to mount an organic EL display on a piano. is there. In the case of the technique of Patent Document 2, since a display device is provided separately from the drum set, the performer must watch both the drum set and the display device.
The present invention provides a performance device capable of displaying an image related to a performance operation with a simple configuration and at a relatively low cost.

  The performance device according to the present invention has a striking surface that vibrates in response to a striking from the front surface, a striking surface portion that displays an image projected from the back surface of the striking surface on the striking surface, and a striking operation on the striking surface A striking motion detecting means for detecting the sound, a sound generating means for generating a sound corresponding to the detection result of the striking motion detecting means, and a rear surface side of the striking surface, and projecting an image relating to the striking motion on the striking surface And a display means.

  According to the present invention, an image can be displayed on the striking surface with a simple configuration in which an image is projected from the back surface side of the striking surface, so that the player can view the image related to the striking motion displayed on the striking surface. Performing operations can be performed.

  Further, in the configuration of the playing device, the hitting motion detection means specifies a hitting position on the hitting surface based on the detected hitting action, and the sounding means is the hitting position specified by the hitting action detecting means. The display means may project a striking position indication image that indicates a striking position on the striking surface corresponding to a sound to be output at a predetermined timing. According to this configuration, the performer can easily perform the performance operation because the player can visually recognize the batting position instruction image displayed on the batting surface at the timing when the batting should be performed.

  Further, in the configuration of the performance device, the playing device further includes a reproducing unit that reproduces the music data, and the display unit displays the hitting position instruction image at the timing determined according to the progress of the music data reproduced by the reproducing unit. May be projected onto the striking surface. According to this configuration, the performer can perform a batting operation at a timing at which the music should be played by the batting position instruction image displayed on the batting surface according to the progress of the music.

  Further, in the configuration of the performance device, the display means instructs a sound to be hit in the score together with a score image indicating the score of the music data corresponding to the progress of the music data played by the playback means. An image may be projected. According to this configuration, the performer can perform a striking operation while confirming the score displayed on the striking surface as the music progresses.

  Further, in the configuration of the performance device, the hitting motion detection means specifies a hitting position on the hitting surface based on the detected hitting action, and the display means displays an image predetermined according to the hitting position. It is good also as projecting on the said striking surface. According to this configuration, the performer can display an image corresponding to the hit position on the hitting surface.

1 is an external view of a drum device according to an embodiment. It is a block diagram of a drum device concerning an embodiment. (a) is a figure which shows the drum pad of the drum apparatus which concerns on embodiment. (b) is a figure which shows the structure and data example of a hit | damage area | region specific table in embodiment. It is a figure which shows the structure and data example of the music data in embodiment. It is a figure which shows the structure and data example of a timbre specific table in embodiment. (a) is a figure showing an example of an impact position directions image in the case of directing an impact of C field in an embodiment. (b) is a figure showing an example of a striking position instruction image when instructing striking of the O region in the embodiment. (A) is an operation | movement flowchart of the striking position instruction | indication image display process in embodiment. FIG. 6B is an operation flowchart of sound generation processing at the time of hitting in the embodiment. It is a figure which shows an example of the score image in the modification 1. (a) is a figure explaining the hit | damage area | region of the drum pad of the drum apparatus which concerns on the modification 2. FIG. (B) is a figure which shows an example of the striking position instruction | indication image in the case of instruct | indicating the striking of area | region A1 of the modification 2, and a score image. (c) is a figure which shows an example of the striking position instruction | indication image in the case of instruct | indicating the striking of area | region A2 of the modification 2, and a score image.

<Appearance>
The performance device according to the embodiment of the present invention is the drum device 1 shown in FIG. As shown in FIG. 1, the drum device 1 includes a cylindrical pad body 2 and leg portions 3 that pivotally support the pad body 2. The pad body 2 is composed of a disk-like drum pad 2a made of, for example, milky white plastic or rubber material that transmits light, and a cylindrical body (rim) 2b having an upper surface opened. The drum pad 2a is fixed to the upper surface of the body 2b. Further, a projector 4 that projects an image from the back side of the drum pad 2a is provided inside the pad body 2, and the striking surface of the drum pad 2a functions as a screen that displays the image projected from the back side. It is configured to

  Further, the striking surface of the drum pad 2a is set with a striking area within the broken line frame (hereinafter referred to as C area) and a striking area outside the broken line frame (hereinafter referred to as O area). In the present embodiment, the drum device 1 generates a single drum sound such as a snare drum. The C area of the drum pad 2a is an area that produces a sound when the drum head center of the acoustic snare drum is hit, and the O area is preset as an area that produces a sound when the end of the drum head is hit. The drum device 1 generates a sound corresponding to the hit area hit by the player with a stick or the like. In the present embodiment, the player performs the drum performance by displaying on the striking surface a striking position indicating image for instructing the player of the striking position, that is, the striking area, in accordance with the reproduction of the music. To assist. Details of the drum device 1 will be described below.

<Configuration>
FIG. 2 is a block diagram showing the configuration of the drum device 1. A CPU (Central Processing Unit) 11 functions to control each unit connected to the CPU 11 by executing a control program stored in a ROM (Read Only Memory) 12 using a RAM (Random Access Memory) 13 as a work area. Have Specifically, the CPU 11 performs a process of generating a timbre corresponding to the hit area when the drum pad 2a is hit, and also reproduces the music and instructs the hit area to be hit according to the progress of the music. A process of displaying the striking position instruction image on the striking surface of the drum pad 2a is performed. The ROM 12 stores a hitting area specifying table for specifying a hitting area for the drum pad 2a described later.

  The sound source 14 stores drum tone color data corresponding to the hit area of the drum pad 2a and tone data other than the drum tone data, and under the control of the CPU 11, the indicated hit area (C area and O area). A tone signal corresponding to the tone is generated, or a tone signal corresponding to the performance data of the designated music is generated and output to the amplifier 15.

Here, the identification of the hit area including the hit position in the present embodiment will be described. FIG. 3A is a view of the drum pad 2a portion of the drum device 1 as seen from the back side. As shown in FIG. 3 (a), a piezoelectric piezoelectric sensor (S0, S1, S2, S3, S4) that detects vibration when the striking surface of the drum pad 2a is struck on the back surface of the drum pad 2a. Is glued. In this example, the piezoelectric sensor S0 is provided in the C region, and the piezoelectric sensors S1 to S4 are provided in the O region, and each piezoelectric sensor is set with coordinates having the XY plane on the drum pad 2a.
The waveform of the detection signal output from each piezoelectric sensor takes a maximum value at a timing earlier than other piezoelectric sensors as the distance between the piezoelectric sensor and the hitting position is shorter. In the present embodiment, the hitting operation is detected by a detection signal from the piezoelectric sensor. That is, when a detection signal of a certain threshold value or more is output, it is assumed that the drum pad 2a is hit, and the waveform of the detection signal from the piezoelectric sensor S0 in the C region first takes a maximum value. The C area is specified as the hit area hit by the player. Further, when the detection signal from the piezoelectric sensor provided in the O region takes a maximum value at a timing earlier than the detection signal from the piezoelectric sensor S0, the hitting region is determined based on the hitting region specifying table stored in the ROM 12. Identify.

  FIG. 3B shows a configuration example of the striking area specifying table in the present embodiment. The striking area specifying table indicates the relative position of the first piezoelectric sensor that detects the maximum value (hereinafter referred to as the first piezoelectric sensor) and the second piezoelectric sensor that detects the maximum value (hereinafter referred to as the second piezoelectric sensor). And the number of all combinations of the second piezoelectric sensor and the relative position of the piezoelectric sensor that has detected the third maximum value (hereinafter referred to as the third piezoelectric sensor), are stored in FIG. Is a striking area specifying table of one of them. In this figure, ΔT1 indicates the time difference when the maximum value is taken between the first piezoelectric sensor and the second piezoelectric sensor, and ΔT2 indicates the time difference when the maximum value is taken between the second piezoelectric sensor and the third piezoelectric sensor. A plurality of time difference ranges between ΔT1 and ΔT2 are set. When specifying the hitting region, the first piezoelectric sensor, the second piezoelectric sensor, and the third piezoelectric sensor are detected when it is detected that a detection value equal to or greater than a certain threshold is output from the piezoelectric sensor and the hitting operation is performed. And the time difference ΔT1 between the first and second piezoelectric sensors and the time difference ΔT2 between the second and third piezoelectric sensors are measured. And the hit | damage area | region corresponding to each measured time difference is specified in the hit | damage area | region specific table corresponding to the relative position of a 1st piezoelectric sensor and a 2nd piezoelectric sensor, and the relative position of a 2nd piezoelectric sensor and a 3rd piezoelectric sensor. Like that. It should be noted that, for example, any method that can identify a striking area, such as identifying a striking area by substituting the time difference of the piezoelectric sensor into a predetermined arithmetic expression for identifying the striking area according to the time difference between the piezoelectric sensors. You may use methods other than the above.

Returning to FIG. 2, the description of the configuration of the drum device 1 will be continued. The amplifier 15 amplifies the drum tone signal and the song data tone signal input from the sound source 14 and outputs them to the speaker 16, and emits the drum or song tone signal from the speaker 16.
The storage unit 17 is composed of a non-volatile storage medium. The music data to be reproduced during the performance of the drum device 1, the tone color specifying table for specifying the tone to be emitted according to the hitting position, and the impact of the drum pad 2a Various data such as hitting position indicating image data indicating the position are stored. Here, the music data, the tone color specification table, and the striking position instruction image data in this embodiment will be described.

  FIG. 4 is a diagram illustrating a configuration of the music data 110 and a data example. The music data 110 in the present embodiment is music data that conforms to the MIDI (Musical Instrument Digital Interface) standard. The music data 110 includes a music name, musical instrument parts included in the music, timbre information (tones D1, D2, G, P, V) indicating the timbre of the musical instrument part, performance data (PD1 to PD5) representing the reproduction content of the music, Control parameters such as playback timing (T1 to T6) indicating the time at which each performance data should be played back, and volume (V2, V3) during playback are associated with each other.

  The tone D1 of the drum is a sound when the center of the drum head of an acoustic drum, for example, a snare drum is hit with a stick, and the tone D2 is when the end of the drum head, that is, near the rim is hit with a stick. Shows the sound. In the performance data, event data such as pitches, sound generation and mute for each part to be reproduced at the reproduction timing is defined. The reproduction timing is represented by the number of clocks according to the MIDI clock supplied from a clock generator (not shown). The clock is counted from the reproduction start point of the music and the count value reaches the number of clocks indicated by the reproduction timing. By repeatedly outputting performance data corresponding to the reproduction timing to the sound source, the musical performance sound is emitted and the musical composition is reproduced.

In this example, the musical piece A includes drum, guitar, piano, and violin instrument parts. For musical instrument parts other than drums, performance data PD3, 4 and 5 corresponding to each musical instrument part are reproduced during reproduction timings T1 to T6, and for drum parts, timbre is reproduced between T1 to T3 and T4 to T6. The performance data PD1 of D1 is reproduced, and the performance data PD2 of timbre D2 is reproduced between T3 and T4.
In the present embodiment, for convenience of explanation, an example in which the drum part is defined for the tone color of a specific drum, for example, a snare drum, will be described, but each tone color of a plurality of drums may be defined.

  Next, the tone color specification table will be described with reference to FIG. As shown in FIG. 5, in the timbre specification table 120, the timbre information indicating the timbre D1 and the timbre D2 is associated with the striking area indicating the C area and the O area of the drum pad 2a. The timbre specification table 120 is read when a striking area corresponding to the striking position is identified, and timbre information corresponding to the identified striking area is read out.

  Next, the hitting position instruction image data in this embodiment will be described. FIG. 6 shows an example of an impact position instruction image projected on the drum pad 2a. 6A and 6B are projected so as to be images corresponding to the sizes of the C area and the O area of the hitting surface of the drum pad 2a. FIG. 6A shows a batting position instruction image when the C area is designated as the batting position, and FIG. 6B shows an example of the batting position instruction image when the O area is designated as the batting position. Show. In the present embodiment, for example, the striking position instruction image is displayed by blinking the C region or the O region or changing the color so that the player can recognize the region to be struck. Further, when no area should be hit, an image may not be projected, or an image indicating that no hit may be displayed.

  Returning to FIG. 2, the description of the configuration of the drum device 1 will be continued. The operation unit 18 includes a power switch for switching on / off the power of the drum device 1 and operation buttons for performing operations such as selecting a music piece and changing the sound volume. The operation signal shown is sent to the CPU 11. The A / D conversion unit 19 is connected to each of the piezoelectric sensors S0 to S4 (hereinafter simply referred to as “piezoelectric sensors” if they are not distinguished) provided on the drum pad 2a in a one-to-one relationship. The detection signal output from the connected piezoelectric sensor is A / D converted and output to the CPU 11 via each port to which each A / D converter 19 is connected.

<Operation>
Next, the operation of the drum device 1 in the present embodiment will be described. FIG. 7 is an operation flow of the drum device 1. In the following description, it is assumed that the power switch of the drum device 1 is turned on by the performer and that the music A is selected.

  First, the process of displaying the striking position instruction image in the drum device 1 will be described using the operation flow of FIG. Note that the striking position instruction image display processing and the sound generation processing at the time of striking described later are processed in parallel by the interrupt processing. The CPU 11 of the drum device 1 reads the music data 110 of the music A selected by the performer from the storage unit 17, starts reading the performance data of the instrument part according to the playback timing defined in the music data 110, and reads it out. The performance data thus stored is sequentially stored in the RAM 13 (step S11).

  Also, the CPU 11 sequentially sends performance data other than the drum part among the performance data stored in the RAM 13 to the sound source 14. The sound source 14 generates a musical sound signal corresponding to performance data other than the accepted drum part, sends it to the amplifier 15, and emits the musical sound signal amplified by the amplifier 15 from the speaker 16 (step S12). Thereby, performance sounds other than the drum part are emitted.

  Subsequently, the CPU 11 refers to the timbre identification table 120 stored in the storage unit 17 to identify and identify the striking area of the drum pad 2a corresponding to the timbre information of the timbre to be generated at each reproduction timing of the drum part. The hit position instruction image data for instructing hitting the hit area is read from the storage unit 17 and sent to the projector 4. The projector 4 projects the striking position instruction image data input from the CPU 11 from the back side of the drum pad 2a, and displays the striking position instruction image on the striking surface (step S13). The CPU 11 continuously performs the process of displaying the striking position instruction image until the reproduction of the performance data of the music piece A is completed (step S14: NO). When the reproduction of the music piece A is completed, the display process of the striking position instruction image is performed. Is ended (step S14: YES).

  As a result, the performer confirms the striking position instruction image displayed on the striking surface of the drum pad 2a, and matches the striking area (C area or O area) designated by the striking position instruction image with the performance of the music piece A. Do the operation to hit.

Next, the operation of the sound generation process at the time of hitting performed in parallel with the above-described hitting position instruction image display process will be described with reference to the operation flow of FIG.
When the strike surface of the drum pad 2a is hit by the performer, that is, a detection signal of a certain threshold value or more is transmitted from the A / D converter 19 corresponding to each piezoelectric sensor from the piezoelectric sensor provided on the drum pad 2a. When the detection value A / D converted by each A / D conversion unit 19 is received via a port to which each A / D conversion unit 19 is connected (step S21: YES), the CPU 11 determines that the drum pad 2a The detection value for each sensor is sequentially stored in the RAM 13. And CPU11 measures the time when the detection value for every piezoelectric sensor becomes maximum value, specifies the 1st piezoelectric sensor, the 2nd piezoelectric sensor, and the 3rd piezoelectric sensor, and sets a hitting field according to the time difference which becomes maximum value. Specify (step S22). That is, if the first piezoelectric sensor is the piezoelectric sensor S0, the region C is specified. If the first piezoelectric sensor is not the piezoelectric sensor S0, the time difference ΔT1 between the first piezoelectric sensor and the second piezoelectric sensor and the second piezoelectric sensor. And a time difference ΔT2 between the third piezoelectric sensor and the third piezoelectric sensor. Then, in the striking area specifying table corresponding to the relative position between the first piezoelectric sensor and the second piezoelectric sensor and the relative position between the second piezoelectric sensor and the third piezoelectric sensor, the striking area corresponding to the time difference ΔT1 and the time difference ΔT2 is indicated. Identify.

  The CPU 11 refers to the timbre specification table 120 stored in the storage unit 17 and specifies the timbre corresponding to the striking area specified in step S22 (step S23). Then, the CPU 11 generates a tone signal of the drum sound corresponding to the tone color specified in step S23 in the sound source 14, and the tone signal of the drum sound generated in the sound source 14 is sent to the amplifier 15 and emitted from the speaker 16. (Step S24).

  In step S21, if the player does not strike the striking surface of the drum pad 2a, that is, no detection signal indicating a voltage value equal to or greater than a certain threshold is output from each piezoelectric sensor provided on the drum pad 2a. In this case (step S21: NO), the CPU 11 ends the drum sound generation process without releasing the drum sound.

  In the present embodiment, the performance data of the drum part portion in the music is not reproduced, and the striking position instruction image indicating the striking area of the drum pad 2a to be hit at the drum part performance timing is displayed on the striking surface of the drum pad 2a. Can be made. Therefore, the performer can perform the drum performance according to the music while visually recognizing the striking position instruction image displayed on the drum pad 2a, and can use the drum apparatus 1 for practice of the drum performance. Further, since different sounds can be emitted depending on the striking area of the drum pad 2a, it is possible to perform the drum as if playing an acoustic drum.

<Modification>
As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above, The following modifications are also contained.

(1) In the above-described embodiment, the image indicating the hit area of the drum pad 2a is displayed as the hit position indication image. However, a preset drum score is used as the image to be displayed on the drum pad 2a. An image may be displayed. When displaying an image showing the score of a drum part included in a song as in the embodiment, the score image data indicating the playback timing of the song to be played and the score of the drum part played at each playback timing is displayed. Pre-stored in the storage unit 17. Then, the CPU 11 inputs score image data to be sequentially displayed on the drum pad 2a in a fixed unit such as one measure to the projector 4 so as to synchronize with the MIDI clock indicated by the reproduction timing of the performance data of the drum part, The projector 4 sequentially projects the score image data. An example in which the musical score image data is displayed on the drum pad 2a in this way is shown in FIG. As shown in FIG. 8, a display area 200 for displaying musical score image data is set in advance on the striking surface of the drum pad 2a. In the display area 200, a musical score image 201 in a certain unit based on the musical score image data is sequentially provided. Is displayed. When the score image 201 includes, for example, a plurality of drum scores 201a and 201b such as a snare drum and a tom tom, the CPU 11 sets a drum score (note) 201a set in advance in its own apparatus. And a score instruction image 210 indicating that the selected score (note) 201a is a performance target is displayed. Note that the musical score instruction image indicating the musical score to be played (notes) is expressed in a form (color coding, blinking, etc.) other than the musical score instruction image 210 in FIG. Also good.

(2) In addition, the drum device 1 according to the above-described embodiment is an example of generating a single drum sound, but may be configured to generate a plurality of drum sounds. In this case, as shown in FIG. 9A, for example, in the drum pad 2a, areas A1, A2, and A3 to which sounds of three drums (snare drum, tom tom, and bass drum) are assigned are set in advance. A piezoelectric sensor for detecting a hit in each region is provided at the center of each region. When the tone color, playback timing, and performance data of each drum are set in the music data, the CPU 11 is assigned the tone color of the snare drum at the playback timing of the snare drum as shown in FIG. 9B. A hitting position instruction image 200a1 for instructing hitting of the area A1 is projected by the projector 4 so as to correspond to the area A1 of the drum pad 2a. 201 and a score instruction image 210 showing the score of the snare drum are projected. Also, at the tom tom reproduction timing, as shown in FIG. 9C, the hitting position instruction image 200a2 for instructing the hitting of the area A2 is displayed by the projector 4 so as to correspond to the area A2 to which the tom tom tone is assigned. The score image 201 and the score instruction image 210 showing the tom-tum score are projected onto the area other than the area A2. In the case of the bass drum, as in the case of the snare drum and the tom tom, the striking position instruction image instructing the striking of the area A3, the score image 201, and the score instruction image 210 instructing the score of the bass drum are displayed on the drum pad 2a. To do.
The above example is an example in which the hit timing of each drum is different in the music data. However, if the music data is configured to hit a plurality of drums at the same time, The striking position instruction image may be displayed on the drum pad 2a so as to correspond to each region to which the sound is assigned, and the score image 201 and the score instruction image 210 may not be displayed. In the above example, the musical score image 201 and the musical score instruction image 210 are displayed together with the striking position instruction image. However, only the striking position instruction image may be displayed so as to be synchronized with the reproduction timing of each drum.

(3) Also, when a score image is displayed as shown in FIGS. 8 and 9 described in the above-described modifications (1) and (2), which score (musical note) is struck is displayed together with the score image. May be. In this case, the position where the drum pad 2a is actually hit is detected based on the output value from the piezoelectric sensor, the note of the score image corresponding to the sound at the detected hit position is specified, and specified in the score image. Configure to show musical notes.

(4) In the above-described embodiment, the example in which the drum part included in the music is not sounded has been described. However, the performance data of the drum part may be reproduced and sounded. In this case, the drum part may be sounded at a volume lower than the volume set in advance.

(5) In the above-described embodiment, the music is played and the striking position instruction image is displayed on the drum pad 2a in synchronization with the drum part in the music. However, for example, a landscape image corresponding to the music, You may make it display the image previously matched with music, such as a person image, on the drum pad 2a. In this case, the image data corresponding to each piece of music is stored in the storage unit 17.

(6) In the above-described embodiment, an example of teaching the position to be hit on the drum pad 2a by displaying the hitting position instruction image is an example, but it is set in advance according to the position hit by the player. It is also possible to display a displayed image and evaluate whether or not the hit position is appropriate. In this case, the position where the drum pad 2a should be struck at a certain timing in the music, the first image data displayed when the position to be struck is struck, and the position when the position to be struck is not struck. The second image data is stored in the storage unit 17 in association with it. Then, the music is reproduced in the drum device 1, and the first image data is projected by the projector 4 if the position hit by the performer at the timing set in advance in the music is the hitting position to be hit at the timing. If it is displayed on the drum pad 2a and it is not a hit position to be hit, the second image data is projected by the projector 4 and displayed on the drum pad 2a. With such a configuration, the drum device 1 can be used as a game machine. For example, each player may be scored as to whether or not the position to be struck can be struck at the timing to be struck, and an image indicating the score of each player may be displayed on the drum pad 2a at the end of the game. .

(7) In the above-described embodiment, an example of a single drum has been described. However, an instruction image instructing which drum should be hit in a drum set may be displayed. The drum set in this case is composed of a plurality of types of drums each provided with a projector 4 as in the above-described embodiment, and any one of the drums includes a projector 4 provided for each drum. A control device for instructing projection of an image is provided. The control device reproduces the music data as in the embodiment, and instructs the projector 4 provided on the drum to be hit to project an image so as to synchronize with the reproduction timing of the performance data of each drum in the music. . The projector 4 instructed to project an image by the control device displays an image set in advance at the instructed timing on the drum pad 2a of the drum provided with the projector. The image displayed on the drum pad 2a may be projected onto the entire surface or a part of the drum pad 2a, for example, as long as it is an image indicating that the drum is to be hit. Further, instead of synchronizing with the music, a drum to be struck in advance according to the genre and tempo conditions of the music such as jazz may be sequentially designated. In this case, the genre and tempo conditions of the song and the order of drums to be hit according to each condition are set in advance in the control device. Then, in accordance with the conditions selected by the performer, an image preset by a projector provided on each drum is displayed so as to indicate the order of drums to be hit. For example, under certain conditions, when the striking order is set as 1 tom tom → 2 floor tom → 3 snare drum, the color of the image displayed according to the striking order, such as 1: red, 2: yellow, 3: blue May be displayed, or the image may be changed according to the hitting order.

(8) In the above-described embodiment, an example in which an image is displayed on the drum pad 2a of the electronic drum has been described. However, the same configuration as that of the embodiment is applied to an acoustic drum having a drum head that diffuses and reflects light. May be.

(9) In the above-described embodiment, an example in which five piezoelectric sensors are provided on the back surface of the drum pad 2a has been described. However, the positions where the piezoelectric sensors are provided and the number of piezoelectric sensors are not limited thereto. For example, three piezoelectric sensors are provided on the outer periphery of the back surface of the drum pad 2a on which S1 to S4 in FIG. 3 of the embodiment are provided so that the angle between the piezoelectric sensors is 120 °, and output from each piezoelectric sensor. The hitting position may be specified based on the difference in arrival time of the maximum values.

(10) In the above-described embodiment, the example in which the projector 4 is provided inside the pad body 2 of the drum device 1 has been described. However, the projector 4 is configured to be provided below the pad body 2 of the drum device 1. May be. In this case, the pad body 2 uses the same drum pad 2a as in the embodiment. The bottom surface of the body 2b facing the drum pad 2a receives vibrations when the drum pad 2a is struck, and the projector 4 You may provide members, such as a snappy, which scatters the light of the image projected from. Thereby, when the performer strikes the drum pad, the light projected from the projector 4 is scattered by the member, and the image effect is obtained by the light leaking from the striking surface of the drum pad 2a to the periphery of the drum device 1 and the ceiling. be able to.

(11) In the above-described embodiments and modifications, the drum has been described as an example. However, the drum and the like are not limited to drums as long as sound is generated by a striking operation such as a Japanese drum.

DESCRIPTION OF SYMBOLS 1 ... Drum, 2 ... Pad body, 2a ... Drum pad, 2b ... Trunk part, 3 ... Leg part, 4 ... Projector, 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... sound source, 15 ... amplifier, 16 ... speaker, 17 ... storage unit, 18 ... operation unit, 19 ... A / D conversion unit, S0, S1, S2, S3, S4 ... Piezoelectric sensors

Claims (5)

A striking surface portion that has a striking surface that vibrates in response to a striking from the front surface, and displays an image projected from the back surface of the striking surface on the striking surface;
A striking motion detecting means for detecting a striking motion on the striking surface;
A sounding means for generating a sound according to the detection result of the hitting motion detecting means;
A performance device, comprising: a display unit that is disposed on a back surface side of the striking surface and projects an image relating to the striking motion onto the striking surface. The striking motion detection means specifies a striking position on the striking surface based on the detected striking motion,
The sound generation means generates a sound corresponding to the hitting position specified by the hitting motion detection means,
2. The performance apparatus according to claim 1, wherein the display unit projects a striking position instruction image that indicates a striking position on the striking surface corresponding to a sound to be output at a predetermined timing. A reproduction means for reproducing the music data;
3. The performance apparatus according to claim 2, wherein the display unit projects the hitting position instruction image onto the hitting surface at the timing determined according to the progress of the music data played back by the playing unit. .   The display unit projects a score image indicating a score of the music data corresponding to the progress of the music data played by the playback unit and an image indicating a sound to be hit in the score. The performance device according to claim 3. The striking motion detection means specifies a striking position on the striking surface based on the detected striking motion,
2. The performance apparatus according to claim 1, wherein the display unit projects a predetermined image on the striking surface according to the striking position.

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