JP5879715B2 - Electronic musical instruments - Google Patents

Description

  The present invention relates to an electronic musical instrument having a performance operator that reciprocates by a performance operation.

  2. Description of the Related Art Conventionally, there is known an electronic musical instrument having a performance operation element that operates in a forward direction in response to an urging operation from a player and returns in a backward direction by releasing the urging. For example, a pedal in an electronic percussion instrument or a keyboard instrument operates in the forward direction when depressed, and returns by releasing the depression.

  As exemplified in Patent Document 1 below, taking a hi-hat cymbal pedal of an electronic percussion instrument as an example, the return operation of the pedal is not based on the urging force from the player, but generally returns only by return by a spring. Is.

JP 2009-128800 A

  However, if the performance operator such as a pedal is not forcibly returned as in Patent Document 1, the performance operator may not always follow the return operation intended by the player and may be delayed.

  In particular, the rubber is included in a configuration in which the upper pad is moved by pressing the pedal and is brought into contact with a member such as the lower pad or a pedestal, and the two are pressed against each other by an elastic material such as rubber. Due to the adhesiveness, it may be difficult to separate the two even if the pressure contact is released. In such a case, when the foot is released from the pedal, the upper pad is delayed from the lower pad, and as a result, the value output from the sensor or switch that detects the pedal position is the actual pedal position. May not be reflected and may be delayed.

  When musical tone control such as hi-hat close tone color control is performed using the detection result of the pedal position, there is a problem that control follow-up is delayed with respect to the operation immediately after the pedal is released.

  This is not limited to percussion instrument pedals, and is true for performance operators that cannot perform a forced return operation. Also, not only when returning from the end position in the forward direction, a deviation (delay) from the player's sense occurs due to the inertia of the performance operator system. Therefore, there is room for improvement in improving the control followability to the operation of the performance operator.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide an electronic musical instrument that can improve control following performance with respect to operation of a performance operator.

In order to achieve the above object, the electronic musical instrument according to claim 1 of the present invention operates in the forward direction in response to the urging operation from the player, and receives the urging force from the urging means by releasing the urging, and returns in the backward direction. A performance operator that performs a return operation, and when the return operation is performed, a performance operator that may not follow the player's operation in the backward direction due to a drag against the return operation, and the operation of the performance operator A detection means for detecting a position in a stroke; a designation means for designating whether or not to correct a detection result of the detection means based on a user instruction; and the detection when the designation means designates correction. the value of the position detected by means, the performance operator as compared to when operating in the forward direction, when the performance operator is operated return, the play Misao the value of the same position detected by said detecting means And correcting means for outputting as a correction value to correct the shallow side of the value of the operation stroke of the child, the tone characteristic based on the correction value outputted by the correction means when it is designated as corrected by said specifying means On the other hand, when it is designated that the correction is not performed by the designation means, the control means for controlling the characteristic of the musical tone based on the uncorrected position detected by the detection means, and the case where the correction is designated by the designation means And calculating means for calculating one of speed and acceleration of the performance operator based on a position detected by the detecting means based on a user instruction, and the correcting means includes the detecting means The degree of correction of the position detected by is changed according to the value calculated by the calculating means.

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to the first aspect of the present invention, it is possible to improve the controllability of the performance operator with respect to the operation.

  According to the second aspect, it is possible to improve the control followability with respect to a fast or strong movement.

1 is an external view of a part of an electronic musical instrument according to a first embodiment of the present invention. It is a block diagram which shows the whole structure of an electronic percussion instrument. It is a figure which shows the flowchart of the main routine in this Embodiment. It is a figure which shows the example of a detection value conversion table. It is a flowchart of the performance process performed by step S103 of FIG. It is a flowchart of the detected value conversion process performed by step S210 of FIG. It is a conceptual diagram at the time of switching the diagram of the conversion table in the middle of a movable stroke. It is a figure which shows the example of the flowchart of the detected value conversion process performed by step S210 of FIG. 5 in a 2nd Embodiment, and the 1st, 2nd conversion table.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1A is an external view of a part of the electronic musical instrument according to the first embodiment of the present invention. In the present embodiment, an electronic percussion instrument having a hi-hat cymbal pad PD is illustrated as an example of the electronic instrument. Other pads are provided, although not shown. A pedal 27 is attached to the hi-hat cymbal pad PD.

  Each of the pads PD includes an upper pad PDU and a lower pad PDL that are circular in plan view. The upper pad PDU and the lower pad PDL correspond to the top cymbal and the bottom cymbal in the acoustic hi-hat cymbal, respectively.

  The lower pad PDL is fixed to a stand (not shown) and does not move up and down during performance. The upper pad PDU is fixed to a movable support 28 standing on a stand (not shown), and the movable support 28 is moved downward by a depression operation of the pedal 27. When the depression is released, an urging force such as a spring (not shown) is applied. Ascend by means. Therefore, the upper pad PDU reciprocates up and down integrally with the movable part and the movable support 28 where the pedal 27 rotates by the pedal operation. In the operation stroke of the upper pad PDU, the upper limit position is an initial position, and the lower limit position is a crossing position, that is, a stepping end position (forward direction end position).

  FIG. 1B is a plan view of the upper pad PDU. A plurality of sensors or switches are arranged in the upper pad PDU. In the upper pad PDU, a piezo sensor 23, an inner sheet sensor 24, an outer sheet sensor 25 (25A, 25B), and a sheet switch 26 are disposed.

  The outer sheet sensor 25 is disposed on the periphery of the upper pad PDU by bonding or the like. The outer sheet sensor 25A is disposed in a region of more than half of the front side, and the outer sheet sensor 25B is disposed in the rear region. The outer sheet sensors 25A and 25B have a substantially annular shape. The inner sheet sensor 24 is disposed in a substantially annular shape inside the outer sheet sensor 25. Each of the sheet sensors 25 and 24 is a film-like sensor that senses a pressure change and outputs a detection signal independently, and the type thereof is not limited, such as a piezoelectric type or a capacitor type.

  One piezo sensor 23 is disposed on the back surface of the upper pad PDU by bonding or the like. The piezo sensor 23 is composed of a piezoelectric element, but any type can be used as long as it can sense vibration.

  The piezo sensor 23 detects vibration due to impact and outputs a detection signal indicating the presence / absence of the impact and its strength. The inner sheet sensor 24 mainly detects a hit with respect to the cup portion and outputs a detection signal indicating the presence or absence of the hit. The outer sheet sensor 25 mainly detects a hit on the peripheral edge and a mute operation pressed from above and below, and outputs a detection signal indicating the presence or absence of the hit and mute operation.

  The configuration of the seat switch 26 and the actuator that presses the seat switch 26 is the same as that disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2009-128800). Briefly, a plurality of sheet switches 26 are concentrically arranged on the substrate (not shown) of the upper pad PDU. The sheet switch 26 is configured to output a signal when the contact portions that are closely spaced by the spacer contact each other.

  The lower pad PDL is provided with a plurality of actuators (not shown) made of elastic members corresponding to the plurality of sheet switches 26. When the upper pad PDU is lowered by the pedal operation, the corresponding actuator comes into contact with the seat switch 26. The plurality of actuators have different projecting heights, and those closer to the outer side in the radial direction of the lower pad PDL are closer to the sheet switch 26 and contact first. When each actuator comes into contact with and presses the corresponding sheet switch 26, each sheet switch 26 outputs a signal indicating that the operation is on. Accordingly, the current position in the movable stroke of the upper pad PDU by the operation of the pedal 27 is grasped by the outputs from the plurality of seat switches 26. Ideally, by detecting the position of the upper pad PDU, the rotational position of the pedal 27 is indirectly grasped.

  However, since the contact between the actuator of the lower pad PDL and the seat switch 26 of the upper pad PDU is elastic, they stick together and the upper pad PDU is not immediately separated (delayed) even if the foot is released from the pedal 27. There may be cases. Therefore, the value detected especially in the return stroke of the upper pad PDU may not necessarily reflect the rotation position of the pedal 27. Such inconvenience is compensated for in the tone control described later.

  FIG. 2 is a block diagram showing the overall configuration of the electronic percussion instrument. The electronic percussion instrument includes a ROM 12, a RAM 13, a timer 14, a storage device 15, a display device 16, an external interface 17, an operation interface 21, a sound source circuit 18, and an effect circuit 19 connected to the CPU 11 via the bus 10. The

  A panel operator 22 is connected to the operation interface 21. The panel operator 22 is an operator for inputting various information. Further, detection signals of the piezo sensor 23 of the pad PD, the sheet sensors 24 and 25, and the sheet switch 26 are supplied to the CPU 11 via the operation interface 21.

  The display device 16 displays various information such as musical scores and characters. A timer 14 is connected to the CPU 11. The external interface 17 includes various interfaces such as a MIDI (Musical Instrument Digital Interface) interface and a LAN (Local Area Network). A sound system 20 is connected to the effect circuit 19.

  The CPU 11 controls the entire electronic percussion instrument. The ROM 12 stores a control program executed by the CPU 11 and various table data. The RAM 13 temporarily stores various input information such as performance data and text data, various flags, buffer data, and calculation results. The timer 14 measures the interrupt time and various times in the timer interrupt process. The storage device 15 stores various application programs including the control program, various music data, various data, and the like.

  The external interface 17 transmits / receives MIDI signals and various data to / from external devices. The tone generator circuit 18 converts performance data based on detection signals input from the pad PD, preset performance data, and the like into musical tone signals. The effect circuit 19 gives various effects to the musical sound signal input from the sound source circuit 18, and the sound system 20 such as a DAC (Digital-to-Analog Converter), an amplifier, and a speaker receives the musical sound signal input from the effect circuit 19. To sound.

  In the performance of the pad PD, an open hi-hat that strikes with a stick without pedal operation, a closed hi-hat that strikes with a stick while depressing the pedal 27, and a sound just by depressing the pedal 27 without using a stick. There is a foot close etc.

  A plurality of the piezo sensor 23, the sheet sensors 24, 25, and the sheet switch 26 may simultaneously output detection signals by hitting the upper pad PDU. Which sensor signal is used for the sound control? It can be set arbitrarily. For example, a sensor signal that outputs a signal indicating the largest value may be simply used for tone control. Further, the outer sheet sensor 25 may be used for detection exclusively for the mute operation or the batting operation at the peripheral edge. Alternatively, the hitting may be detected in cooperation with the piezo sensor 23, and the detection signal of the outer sheet sensor 25 may be used for determining the hitting position. Alternatively, the detection of hitting the cup portion may be performed exclusively using the signal detected by the piezo sensor 23 without using the output of the inner sheet sensor 24.

  How to control the musical tone according to the detection output of the operation of each seat switch 26 is arbitrary, but the following is given as an example. For example, when none of the plurality of seat switches 26 is turned on and an operation such as hitting the pad portion is detected by the piezo sensor 23 and the seat sensors 25 and 24, the operation is processed as an open hi-hat, and the corresponding musical tone is processed. generate. When one of the plurality of seat switches 26 is turned on and a hit of the pad portion is detected, it is treated as a closed hi-hat, and the innermost one of the seat switches 26 that are turned on at that time is determined. A musical tone is generated with a different tone. For example, when the innermost one is on, the timbre is the same as that of a closed hi-hat in an acoustic hi-hat cymbal.

  When a pedal on / off operation is performed while the pad portion is struck and sounded, the timbre may be changed in real time according to the seat switch 26 in which the on / off is detected. By the way, when the mute operation is detected by the seat sensor 25, the musical sound produced by the foot close or the like is also attenuated.

  FIG. 3 shows a flowchart of the main routine in the present embodiment. This process is executed by the CPU 11 and is started when the power is turned on.

  First, execution of a predetermined program is started, and initial settings are made by setting initial values in various registers (step S101). Next, panel setting is executed, that is, an instruction such as device setting is executed (step S102). In this panel setting, the content instructed by the panel operator 22 from the user (player) is set in the device. For example, it is possible to set which tone color and how to generate a musical tone based on each detection signal in each pad PD. Alternatively, in the case of an instruction related to the pedal 27, a detection value conversion mode (described later) is also set.

  Next, a performance process of FIG. 5 described later is executed to generate a performance signal and perform a sound generation process (step S103). Thereafter, the process returns to step S102.

  4A to 4E are diagrams illustrating examples of the detection value conversion table. These conversion tables may be used depending on the set conversion mode.

  Taking FIG. 4A as an example, the horizontal axis is the output of the seat switch 26, which is grasped as the detection position in the depression stroke of the pedal 27, but actually shows the detection position of the upper pad PDU. The vertical axis represents the conversion value (correction value) after correcting the detection position. In this conversion table, the trajectory LG is used when the pedal 27 moves in the forward direction, and the trajectory LB is used when the pedal 27 moves in the backward direction. In this example, the trajectory LG is a straight line that is corrected so that the detection position and the conversion value are the same, and is substantially the same as no correction (no conversion). However, the slope of the straight line is not limited to this example.

  For example, in the forward stroke of the pedal 27, when the detection positions are x1 and x2, the converted values are y1 and y2 using the trajectory LG. However, in the backward stroke of the depression, both the detection positions x1 and x2 are corrected to the converted value y1 using the trajectory LB. Therefore, according to the conversion using this conversion table, the value of the same detection position is set to the shallower value of the operation stroke of the pedal 27 when the return operation is performed than when the pedal 27 is operated in the forward direction of the depression. Will be corrected.

  The pedal 27 (or the upper pad PDU) follows the player's foot when depressing, but the player does not forcibly return by simply releasing the foot during the return operation. Only receive energizing power. Since a delay may occur in the return operation, the conversion table shown in FIG. 4A is set from the viewpoint of correcting to a shallow side only during the return operation. Such a conversion table is not only in a situation where a delay occurs due to the inertia of the movable system due to the stepping operation, but also due to the elastic contact relationship between the actuator of the lower pad PDL and the seat switch 26 of the upper pad PDU. It is effective even in situations where the

  In addition, FIGS. 4B and 4C are illustrated as examples of conversion tables in which the degree of correction is different from that in FIG. The conversion table in FIG. 4B has a small degree of correction. This is useful when the return delay of the upper pad PDU is not very large. In the conversion table of FIG. 4C, the degree of correction is large in the first half of the return, and the degree of correction is small in the second half of the return. This is particularly useful in the case of compensating for an initial delay due to elastic sticking between the lower pad PDL and the upper pad PDU.

  In addition to the above, conversion tables as shown in FIGS. 4D and 4E are also exemplified. The example of FIGS. 4D and 4E is not suitable for the present embodiment, but a case where a delay occurs with respect to the player's action when the performance operator moves in the forward direction. Useful for. FIG. 4 (e) is particularly useful when a delay occurs in both directions. These plural types of conversion tables are all stored in the ROM 12 in advance.

  FIG. 5 is a flowchart of the performance process executed in step S103 of FIG. FIG. 6 is a flowchart of the detected value conversion process executed in step S210 of FIG.

  Here, as the conversion table used in the present embodiment, the one shown in FIGS. 4A and 4B is employed. Although specifically described later, in step S306 of FIG. 6, the conversion table of FIG. 4A (also referred to as the first conversion table) is used, and in steps S302 and S310 of FIG. 6, the conversion table of FIG. A conversion table (also referred to as a second conversion table) is used.

  Further, there are three conversion modes A, B, and C that can be set, and either one is set or none is set. In the mode A, the second conversion table (FIG. 4B) is used, and in the modes B and C, the first and second conversion tables (FIG. 4A, FIG. It is determined which of b)) is used.

  A flowchart will be described. First, in step S201 in FIG. 5, processing is performed on the pads other than the hi-hat cymbal pad PD. That is, the sound generation control process is performed according to the detection result of each sensor in the other pads.

  In steps S202, S203, and S204, it is determined whether or not there has been a response (change in output) of the piezo sensor 23, the outer sheet sensor 25, and the sheet switch 26, and if there is a response, processing corresponding to that is executed. However, in step S203, the outer sheet sensor 25 detects whether or not there is a reaction indicating a mute operation. Here, it is determined whether or not there has been a certain change in output.

  First, when there is a response from the piezo sensor 23, the striking position and the striking strength are detected (step S205). The striking position is comprehensively detected from outputs of the piezo sensor 23, the inner sheet sensor 24, and the outer sheet sensors 25A and 25B, for example. The impact strength is detected from the output of the piezo sensor 23.

  Next, a performance signal is generated and output using the recorded value (current value) (step S206), and the process proceeds to step S203. That is, by setting and outputting a velocity, a waveform, an effect, an envelope, and the like according to the detected hitting position, hitting strength, and recorded value (current value), sound generation processing that matches the hitting is performed.

  Here, the “recorded value” is a value after the value detected by the seat switch 26 as the position of the pedal 27 is converted by the conversion table (referred to as “pedal position”), and is updated in step S211 described later. Is done. What is stored as a recorded value includes a current value and a latest value (= previous value and previous value). The recorded value is stored in the RAM 13. Each value of the recorded value is also stored with information on the time at which they were acquired. In step S206, the current value of the recorded values is used. Therefore, the sound to be generated has a tone color or volume attenuation characteristic according to the current depression state of the pedal 27.

  If there is a reaction indicating the mute operation in the outer sheet sensor 25 in step S203, the current value of the detection value of the outer sheet sensor 25 is recorded (step S207). If the performance signal is being output (step S208), the mute process is performed according to the current value of the detection value of the outer sheet sensor 25 (step S209). That is, control is performed so that the volume envelope of the performance signal currently being output is rapidly attenuated, and the effect to be applied is changed accordingly.

  After the mute process or when the performance signal is not being output, the process proceeds to step S204, and when there is a reaction (change in output) of the seat switch 26, the detection value conversion process of FIG. 6 is executed (step S210). .

  In the flowchart of FIG. 6, processing is performed depending on which of the set “detection value conversion modes” is mode A, B, or C. First, when mode A is set, the process proceeds from step S301 to step S302, and the pedal is used by using the conversion table selected for mode A (second conversion table shown in FIG. 4B). 27 detection positions are converted (corrected). This detection position is the detection value output this time (in step S204) from the sheet switch 26, and is not the current value but the current value in the recorded value.

  Here, the second conversion table (FIG. 4B) is used. However, the player can determine the conversion table to be selected for mode A, and it is possible to apply a conversion table other than that shown in FIG. Thereafter, the process proceeds to step S312, and the value converted in step S302 is temporarily stored as the current value.

  When mode B is set, the process proceeds from step S301 to step S303 to step S304, and the speed v and the moving direction of the pedal 27 are calculated. The velocity v is calculated from “| current value−previous value |” using a recorded value (current value, previous value, previous value). The moving direction is determined by the sign of “current value−previous value”.

  Next, it is determined whether or not the calculated pedal speed v is greater than or equal to a predetermined value (step S305). As a result of the determination, if the pedal speed v is not equal to or higher than the predetermined value, the second conversion table (FIG. 4B) is used. If the pedal speed v is equal to or higher than the predetermined value, the first conversion table (FIG. 4A) is used. 27 detection positions are converted (corrected), respectively (steps S310 and S306). That is, when the pedal speed v is fast, the degree of correction of the detection position becomes large. Thereafter, the process proceeds to step S312, and the value after the conversion in steps S310 and S306 is temporarily stored as the current value.

  If mode C is set, the process proceeds from step S301 to step S303 to step S307 to step S308, and the acceleration a and the moving direction of the pedal 27 are calculated. The acceleration a is calculated from “| (current value−previous value) − (previous value−previous value) |”. The moving direction is determined by the sign of “current value−previous value”.

  Next, it is determined whether or not the calculated pedal acceleration a is greater than or equal to a predetermined value (step S309). As a result of the determination, if the pedal acceleration a is not equal to or greater than a predetermined value, the second conversion table (FIG. 4B) is used. If the pedal acceleration a is equal to or greater than the predetermined value, the first conversion table (FIG. 4A) is used. 27 detection positions are converted (corrected), respectively (steps S310 and S306). That is, when the pedal acceleration a is large, the degree of correction of the detection position is large. Thereafter, the process proceeds to step S312, and the value after the conversion in steps S310 and S306 is temporarily stored as the current value.

  If none of modes A, B, and C is set, the process proceeds from step S301 to S303 to S307 to S311. In this case, the detected position of the pedal 27 is not converted (no correction) and is temporarily stored as the current value (step S312). Thereafter, this process is terminated. By the way, when the current value is temporarily stored in step S312, the time information at which the corresponding detection position is acquired is attached thereto.

  Returning to FIG. 5, in step S211, the recorded value is updated based on the value stored as the current value in step S210 (step S312 in FIG. 6). Specifically, the current value, the stored current value, and the stored previous value are slid to be a new current value, a previous value, and a previous value. The accompanying time information is also maintained.

  Next, it is determined whether or not a performance signal is being output (step S212). If the performance signal is being output, it can be determined that the performance signal has been closed by a pedal operation during sound generation, so a close process is performed (step S213). . That is, the volume envelope of the performance signal currently being output is updated in accordance with the current value, and control is performed so as to change the effect to be given accordingly. If the performance signal is not being output, this process is terminated. However, even when the performance signal is not being output, sound generation processing corresponding to performance such as foot close may be performed depending on the current value.

  According to the present embodiment, when the pedal speed v or the pedal acceleration a is large, the degree of correction of the detection position of the pedal 27 is increased, so that the control followability for the fast or strong movement of the pedal 27 is improved. Can do. In particular, by using a conversion table that corrects the value of the same detection position to a shallower value of the operating stroke of the pedal 27 when the pedal 27 returns compared to when the pedal 27 operates in the forward direction, The delay of the return operation can be compensated.

  Further, whether to correct the detection position based on the pedal speed v or the pedal acceleration a is determined by the mode setting based on the user's instruction, so that more suitable control can be performed depending on the user's intention.

  By the way, in this Embodiment, although the structure which changes the conversion table to be used according to the pedal speed v or the pedal acceleration a was employ | adopted, it is not restricted to this, What is necessary is just control which changes the correction | amendment degree. For example, an arithmetic expression or a parameter to be used may be changed according to the pedal speed v or the pedal acceleration a so that the degree of correction is different. Further, the change of the conversion table and the arithmetic expression to be used is not limited to two steps, and may be switched in three steps or more, or may be a non-step change.

  Note that the conversion tables used in steps S302 and S310 in FIG. 6 need not be common.

  By the way, when the detection position is converted using the conversion table, if the movement direction of the pedal 27 changes in the middle, the conversion value changes suddenly. If it is far enough from the stepping end position, there is almost no trouble. However, as described with reference to FIG. 7, it is desirable that the conversion value transition smoothly.

  FIGS. 7A and 7B are conceptual diagrams when switching the diagram of the conversion table in the middle of the movable stroke. An example of the conversion table shown in FIG. For example, as shown in FIG. 7B, when the pedal 27 is depressed again at a point P1 on the trajectory LB on the way to return, a linear trajectory LG1 from the point P1 to the end point PE is temporarily set. The detection position is converted in accordance with the linear trajectory LG1. However, when the pedal 27 is further depressed and released at a point P2 in the middle of the linear trajectory LG1, a curved trajectory LB1 is set from the point P2 to the fulcrum PS, and the detection position is converted according to the curved trajectory LB1. In addition, when the pedal 27 is depressed and released at a point P3 on the way of the forward journey trajectory LG, a curved trajectory LB2 is set from the point P3 to the fulcrum PS, and the detection position is converted according to the curved trajectory LB2.

  As shown in FIG. 7 (a), trajectories in the forward direction and the backward direction of depression are stored in advance for a number of intermediate points P0, and from the point P0 approximated to an actual intermediate point, the pedal is A trajectory corresponding to the switching direction of the 27 displacements is set each time. In this example, since the conversion table of FIG. 4A is adopted, a straight line is formed in the forward direction, and a convex curve is formed in the same direction as the trajectory LB in the backward direction.

(Second Embodiment)
In the second embodiment of the present invention, the delay in the initial stage of recovery due to elastic sticking between the lower pad PDL and the upper pad PDU is mainly compensated. Therefore, in the second embodiment, the detection value conversion process executed in step S210 in FIG. 5 and the conversion table used in the detection value conversion process are different from those in the first embodiment. Unlike other configurations, the other configurations are the same.

  FIG. 8A is a flowchart of the detected value conversion process executed in step S210 of FIG. 8B and 8C are diagrams illustrating examples of the first conversion table and the second conversion table.

  First, in step S401 in FIG. 8A, it is determined whether or not the current state of the pedal 27 is in the middle of a direct return from the stepping position (stepping end position). This state is intended to indicate a state in which the pedal 27 is displaced in the backward direction without being depressed in the forward direction once from the depression end position.

  In order to determine this, for example, when the pedal 27 reaches the depression end position, the maximum value of the detection position is held. When the pedal 27 returns to the initial position, or when the pedal 27 is displaced in the forward direction during the return operation from the depression end position, the hold value is reset. If the max value is held and the current value at the detection position is smaller than the previous value in the recorded value, it can be determined that the return is in the middle of the direct return from the depression end position.

  If the result of the determination in step S401 is not in the middle of a direct return, the process proceeds to step S311 in FIG. 6, where the detected position of the pedal 27 is not converted (no correction) and is temporarily stored as the current value (in FIG. 6). Step S312). On the other hand, if it is in the process of returning directly, it is determined whether or not the mode A is set as the “detection value conversion mode”. If mode A is set, the processing after step S302 in FIG. 6 is executed. In this case, in step S302, the second conversion table (FIG. 8C) is used.

  On the other hand, when the mode A is not set, the processing after step S303 in FIG. 6 is executed. In this case, the first conversion table (FIG. 8B) is used in step S306 of FIG. In step S310 in FIG. 6, the second conversion table (FIG. 8C) is used.

  The conversion tables in FIGS. 8B and 8C are both conversion tables dedicated to the return operation of the pedal 27 and during the direct return. In the first conversion table (FIG. 8B), the detection position is set on the shallower side of the operation stroke immediately after the start of the return from the stepping-in end position than in the second conversion table (FIG. 8C). The degree of correction when correcting to a value is large. Such a region immediately after the start of return can be defined as a predetermined region on the stepping end position side including the stepping end position in the operation stroke of the pedal 27.

  Thereby, in particular, it is possible to improve the control followability with respect to the operation immediately after the depression of the pedal 27 from the depression end position.

  In each of the above embodiments, the seat switch 26 is exemplified as the detection means for detecting the position of the pedal 27, but is not limited thereto. For example, the detection means may be provided not on the pad PD side but on the pedal 27 side. Moreover, the detection means should just be the structure which can detect the position in the movable stroke of the pedal 27 directly or indirectly. Therefore, the position of the pedal 27 may be grasped by detecting the position of a member interlocked with the movable part of the pedal 27.

  The electronic musical instrument to which the present invention is applied is not limited to an electronic percussion instrument, and the performance operator is not limited to a pedal. It can also be applied to keyboard pedals and keys. That is, the performance operator may be any element that operates in the forward direction in response to the urging operation from the player and returns in the backward direction when the urging is released.

  Further, the tone characteristics controlled by the detection position of the performance operator such as the pedal 27 are not limited to those exemplified by the envelope.

  11 CPU (correction means, control means, calculation means), 23 piezo sensor, 26 sheet switch (detection means), 27 pedal (performance operator)

Claims (3)

Along with the work in the forward direction in response to the urging operation from the player, a performance operator to return operation in the backward direction in response to the biasing force of the biasing means by a biasing released, at the time of the return operation, return A performance operator that may not follow the player's operation in the backward direction due to drag against the action ;
Detecting means for detecting a position in the operation stroke of the performance operator;
A designation means for designating whether to correct the detection result of the detection means based on a user instruction;
When it is designated by the designation means to be corrected, the value of the position detected by the detection means is compared with the value when the performance operator operates in the forward direction. Correction means for correcting the value at the same position detected by the detection means to a shallower value of the operation stroke of the performance operator and outputting as a correction value;
When it is specified that correction is performed by the specifying means, the characteristics of the musical tone are controlled based on the correction value output by the correcting means, while when it is specified not to be corrected by the specifying means, it is detected by the detecting means. Control means for controlling the characteristics of the musical sound based on the uncorrected position ;
And calculating means for calculating one of speed and acceleration of the performance operator based on a position detected by the detecting means based on a user instruction when it is specified to be corrected by the specifying means. And
The electronic musical instrument characterized in that the correction means changes the degree of correction of the position detected by the detection means in accordance with the value calculated by the calculation means.   The correction means increases the degree of correction of the detected position as the value calculated by the calculation means indicates that the speed or acceleration of the performance operator is large. The electronic musical instrument described. 3. The electronic musical instrument according to claim 1, wherein the detecting means detects the position of the performance operator by a relative operation of a switch and an actuator that are elastically separated from and contacting each other by displacement of the performance operator. .

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