JP2012103544A - Electronic keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make possible simulation of variations in pressing-down load of a damper pedal of an acoustic piano, when not stepped on, according to the tone pitch to reduce the awkward feel of key pressing on the border of key ranges.SOLUTION: The pressing-down loads Fx of individual keys in a stroke position STx, which is supposed to be the position immediately after a damper leaves the damped string in a key depression forward stroke of an acoustic piano according to the setting of the bending length of a hammer, are so set as to gradually decrease from the low sound side toward the high sound side; the difference DB in pressing-down load Fx between a first key K1a and a second key K2a adjoining each other on a border B corresponding to the border of key ranges differing in the presence or absence of a damper mechanism in the acoustic piano is greater than the greatest of differences D1 and D2 between pressing-down loads Fx of two other mutually adjoining keys in the keyboard part.

Description

  The present invention relates to an electronic keyboard instrument in which a pressing load is applied to a key.

  2. Description of the Related Art Conventionally, an electronic keyboard instrument is known in which a hammer or the like that rotates in conjunction with a key is provided, an inertia force is applied to a key pressing operation, and a key pressing load of an acoustic piano is simulated. For example, the keyboard instrument disclosed in Patent Document 1 is configured such that the hammer length is shortened in order from the bass key, and the pressing load when the key is depressed becomes lighter. Particularly, by forming the peripheral end portions of adjacent hammers into a continuous inclined shape, the pressing load is configured to change smoothly as the sound goes from the low sound side to the high sound side.

JP 2008-164760 A

  In the keyboard instrument, the difference in pressing load between adjacent keys is substantially constant in the entire key range. However, an acoustic piano (hereinafter referred to as “raw piano”) has a damper mechanism except for the high sound range, and the actual pressing load of each key changes by the weight of the damper depending on whether or not the damper pedal is depressed. Therefore, especially when the damper pedal is not depressed, there is no step change in the key pressing load at the boundary from the mid range to the high range in the conventional keyboard instrument, which is different from the live piano. The key press load was felt. This will be described below.

  FIG. 4A is a diagram showing a change in pressing load with respect to a key pressing stroke of one key in a key area having a damper mechanism in a live piano (grand piano). In FIG. 4A, the horizontal axis indicates the key pressing stroke position from the non-key pressing position ST0, and the vertical axis indicates the pressing load. The damper mechanism is a mechanism that releases the string when the damper pedal is depressed, the damper that is in contact with the string is separated from the string. The damper can also be moved by the key depression, and the damper is separated from the string from the stroke position ST1 in the key depression forward stroke.

  After the stroke position ST2, load fluctuation due to hammer driving such as engagement between the jack and the hammer roller, or load fluctuation due to contact with the key pressing stopper or the like occurs. Normally, the damper mechanism is not provided in the key range of about 20 keys on the high sound range side, and the load change due to the damper occurs only in the middle and low sound range lower than this.

  As shown in FIG. 4 (a), comparing the load change curves when the damper is depressed (when the damper is on) / not depressed (when the damper is off), the jack starts driving the hammer roller at the stroke position ST1 at which the damper begins to move away from the string. At a stroke position STx (predetermined depth) between the stroke position ST2 at which the damper starts to be started, the load is larger by the load increase D when the damper is not depressed.

  FIG. 4B is a schematic diagram showing the pressing load at the stroke position STx of each key in the entire key range. The horizontal axis represents the pitch, and the vertical axis represents the pressing load. In FIG. 4B, a boundary B represents a boundary between a key area with a damper mechanism and a key area without a damper mechanism. Overall, the pressing load at the stroke position STx is smaller for the keys on the higher sound side. In the key range higher than the boundary B, the pressing load at the stroke position STx for each key does not change regardless of whether the damper is on or off. However, in the key range lower than the boundary B, the pressing load at the stroke position STx of each key is larger when the damper is off (Loff) than when the damper is on (Lon). That is, for a mid-low range key, the load from the stroke position ST1, which is in the middle of the key-pressing stroke, increases by the weight of the damper when the damper is off. About the pressing load according to the pitch at the time of damper-off, the level | step difference larger than between two adjacent keys arises between the keys adjacent on the boundary B. FIG.

  However, in the above-described conventional keyboard instrument, the pressing load of each key is irrelevant to whether or not the damper pedal is operated, and the difference in pressing load between adjacent keys at the position corresponding to the boundary B is between other keys. It is always about the same as the difference in. In the first place, it is not uncommon for electronic keyboard instruments to have no damper pedal. Therefore, the step change of the pressing load at the boundary B felt when the damper of the live piano is turned off cannot be felt with the above-described conventional keyboard musical instrument, and the experienced person may feel uncomfortable with the key pressing load.

  The present invention has been made in order to solve the above-described problems of the prior art, and its purpose is to make it possible to simulate a change in pressing load according to the pitch when the damper pedal is not depressed on an acoustic piano, An object of the present invention is to provide an electronic keyboard instrument that can reduce the uncomfortable feeling of the key load at the border.

  In order to achieve the above object, an electronic keyboard musical instrument according to claim 1 of the present invention is an electronic keyboard musical instrument having a keyboard portion (KB) made up of a plurality of keys, each of which is operated to be depressed. The pressing load at a predetermined depth (STx) during the keystroke is set so as to gradually decrease from the low key to the high key, and from the lowest tone to the predetermined pitch ( First key K1a up to F # 6) and the first key K1a on the low tone side adjacent to each other at the boundary (B) between the second key range from the predetermined pitch to the highest note The difference (DB) in the pressing load with respect to the second key (K2a) is the largest among the differences (D1, D2) in the pressing load between the other two keys adjacent to each other in the keyboard part. It is characterized by being set larger than the one.

  Preferably, the predetermined pitch is assumed to be the highest pitch of a key range having a function of separating the damper from the string by depressing a damper pedal in an acoustic piano.

  Preferably, the difference (DB) in the pressing load between the first key and the second key is the highest in the key range having a function of separating the damper from the string by depressing the damper pedal in the acoustic piano. Of the pressing load at a position immediately after the corresponding damper is separated from the corresponding string in the key pressing forward stroke in the non-depressed state of the damper pedal between the key of the pitch of the key and the key adjacent to the high pitch side of the key. It is set below the difference (claim 3).

  Preferably, the predetermined depth is a depth assuming a position immediately after the corresponding damper is separated from the corresponding string in the keystroke forward stroke of the acoustic piano.

  Preferably, the pedal detection means (16) for detecting the pedal (PD), the operation of the pedal, and the detection result of the pedal detection means for generating a musical sound corresponding to the key pressed and generating the musical sound. And a musical tone control unit (10) that controls to give a predetermined effect in response to the musical tone generated by a key pressing operation of a key in the first key range. When the on-operation of the pedal is detected by the means, the predetermined effect is controlled (Claim 5).

  Preferably, a pedal, pedal detection means for detecting the operation of the pedal, velocity detection means (14) for detecting a key pressing velocity of each of the plurality of keys, and a musical sound corresponding to the key pressed are generated. And a musical tone control unit (10) for controlling the volume of the musical tone to be generated according to the detection result of the velocity detecting means, and the musical tone control unit is operated by pressing a key in the first key range. Regarding the generated musical sound, the volume setting for the same key depression velocity is made larger when the on operation is detected than when the pedal detection means does not detect the on operation of the pedal (claim 6).

  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 simulate the change in the pressing load according to the pitch when the damper pedal is not depressed in the acoustic piano, and the uncomfortable feeling of the key pressing load at the boundary of the key range can be reduced. .

  According to the second aspect, it is possible to reduce the uncomfortable feeling of the key pressing load at the boundary of the key range which is divided depending on the presence or absence of the damper mechanism.

  According to the third aspect of the present invention, it is possible to balance the sense of incongruity of the key pressing load as viewed both when the damper pedal is depressed and when it is not depressed.

  According to the fourth aspect, it is possible to simulate an increase in the pressing load due to the action of the damper in the key pressing stroke.

  According to the fifth aspect, the relationship between the key depression load according to the damper pedal operation and the application of the musical sound effect can be harmonized.

  According to the sixth aspect, the relationship between the key depression load according to the damper pedal operation and the tone volume can be harmonized.

It is a top view of the keyboard part of the electronic keyboard musical instrument which concerns on one embodiment of this invention, and a schematic diagram which shows the structure of the keyboard musical instrument. The figure which shows the difference in the pressing load of the 1st and 2nd key adjacent at a boundary, The schematic diagram which showed the thing of the live piano and the thing of this keyboard instrument about the pressing load of each key of all the key ranges, It is a figure which shows the pressing load of the key in the vicinity of a boundary. In the modified example, a diagram showing the difference in pressing load between the first and second keys adjacent to each other at the boundary, and the pressing load of each key in the entire key range are shown together with those of the live piano and those of the keyboard instrument. It is a schematic diagram. It is a figure which shows the change of the pressing load with respect to the key pressing stroke of one key of a key range with a damper mechanism in a raw piano, and a schematic diagram which shows the pressing load of each key of the whole key range.

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

  Fig.1 (a) is a top view of the keyboard part of the electronic keyboard musical instrument which concerns on one embodiment of this invention. FIG. 1B is a schematic diagram showing the configuration of the electronic keyboard instrument.

  As shown in FIG. 1B, the electronic keyboard instrument is provided with a control unit 10, a musical tone generation unit 15, a damper pedal PD, and a pedal operation detection sensor 16. Further, as shown in FIG. 1A, the keyboard part KB of the keyboard instrument has a plurality of keys K each of which is pressed. The setting of the pressing load given to each key K changes suddenly at the boundary B between the first key range and the second key range in the entire key range. The setting of the pressing load will be described later. At the boundary B, the first key K1a on the lower side and the second key K2a on the higher side are adjacent to each other. The boundary B of the key range assumes a pitch position that is divided depending on the presence or absence of a damper mechanism in a live piano (grand piano).

  The first key range corresponds to a key range (medium bass range) having a function of separating the damper from the string by depressing the damper pedal, and the second key range corresponds to a high range having no such function. . The pitch of the first key K1a is set to the highest pitch (predetermined pitch) in the middle / low range with the damper mechanism, and is F # 6 in the present embodiment, but this is an example. For live pianos, the specifications differ depending on the model, but the number of keys in the high pitch range without a damper mechanism is normally about 20 keys. For example, the key with pitch E6 may be used as the first key K1a.

  The configuration of each key K is the same except for the pressing load, and FIG. 1B shows one key K. The key K has a front end portion (a left end portion in FIG. 1B) swingable up and down around the key fulcrum 11. When the front end of the key K is pressed at the initial position, the front end is displaced downward. Below the key K, a hammer HM is arranged correspondingly. That is, the hammers HM are arranged in parallel in the arrangement direction of the keys K by the number of keys. Each hammer HM is rotatable about the rotation fulcrum 13 in the clockwise and counterclockwise directions of FIG.

  The front end portion of the hammer HM and the front end portion of the key K are connected to each other by a rotation shaft 12 so as to be rotatable. Accordingly, the corresponding hammer HM is rotated in conjunction with the key K being rotated by the key release operation. The rear end portion of the hammer HM is bent to concentrate the mass. In the free state, the hammer HM is arranged to urge the key K in the clockwise direction in FIG. Accordingly, in the key pressing forward stroke, a load is applied to the key K as a reaction force against the key pressing, that is, a pressing load due to the mass of the hammer HM. The mass of the hammer HM gives an inertial force to the key pressing operation, and a key pressing feeling like a live piano is obtained. The mass of each hammer HM is made according to the setting of the bending length HMa of the rear end portion, and is individually different.

  A key pressing sensor 14 for detecting a key pressing operation of each key K is provided corresponding to each key K. The key pressing sensor 14 is, for example, a 2-make sensor, is pressed by the key K, detects that the key is pressed, and detects the key pressing velocity, and supplies the detection signal to the control unit 10. Further, the operation of the damper pedal PD that is depressed with a foot is detected by the pedal operation detection sensor 16, and the detection signal is supplied to the control unit 10.

  Although not shown individually, the control unit 10 includes a CPU, ROM, RAM, timer, storage device, various interfaces, and the like, and the CPU controls the operation of the entire musical instrument according to a program stored in the ROM. Although not shown individually, the musical sound generator 15 includes a sound source circuit, an effect circuit, a sound system, and the like, and generates sound according to control by the control unit 10. In the present embodiment, a musical sound corresponding to the key K that has been pressed is generated, and a sound effect (predetermined effect) corresponding to the key K in the first key range is added when the damper pedal PD is turned on. Is done. As this sound effect, for example, a musical sound is adopted although it corresponds to a resonance sound (damper sound) by an open string, but is not limited thereto.

  Next, the setting of the pressing load will be described with reference to FIG. FIG. 2A is a diagram illustrating the difference in pressing load with respect to the key pressing stroke of the first key K1a and the second key K2a adjacent at the boundary B. FIG. The horizontal axis indicates the key pressing stroke position from the non-key pressing position ST0 that is the initial position of the key K, and the vertical axis indicates the pressing load. Curves of pressing loads of the first key K1a and the second key K2a are indicated by LK1a and LK2a. The stroke position STx is synonymous with that shown in FIG. 4A, and is also a position assuming a position immediately after the damper is separated from the string in the key-pushing stroke of the live piano.

  By the way, in this embodiment, for any key K, the change in the pressing load during the key pressing stroke is always fixed, and does not change depending on whether or not the damper pedal PD is operated.

  FIG. 2 (b) is a schematic diagram showing the pressing load at the stroke position STx of each key K in the entire key range together with that of the live piano and that of the keyboard instrument. Similar to FIG. 4B, the horizontal axis indicates the pitch and the vertical axis indicates the pressing load. The pressing load of the keyboard instrument is indicated by a curve L1 on the lower side and a curve L2 on the higher side from the boundary B. The pressing load of the live piano is indicated by a curve Lon and a curve Loff on the lower side from the boundary B, and a curve L2 on the higher side. Hereinafter, the “pressing load at the stroke position STx” is particularly abbreviated as “pressing load Fx”.

  As shown in FIG. 2B, in the second key range, the pressing load Fx is the same between the keyboard instrument and the live piano regardless of the damper on / off (curve L2). In the first key range of the live piano, as described above, the pressing load Fx is larger when the damper is off (Loff) than when the damper is on (Lon). In the first key range of the keyboard instrument, the pressing load Fx is set to be an intermediate value between the pressing load Fx when the live piano damper is on (Lon) and the pressing load Fx when the damper is off (Loff). The Therefore, the curve L1 is parallel to both between the curves Lon and Loff. In each of the first keyboard range and the second key range, the pressing load Fx is set to gradually decrease from the bass key K to the higher key K in both the keyboard instrument and the live piano. Is done. Therefore, the change in the pressing load Fx according to the pitch is smooth.

  FIG. 2C shows the pressing load Fx of the key K in the vicinity of the boundary B. As shown in FIG. 2 (c), in the first key range of the keyboard instrument, the difference D1 in the pressing load Fx between adjacent keys K (for example, key K1c and key K1b, key K1b and key K1c) is It is almost constant and is a little louder near the lowest sound (see FIG. 2B). In the second key range of the keyboard instrument, the difference D2 in the pressing load Fx between adjacent keys K (for example, the key K2a and the key K2b, the key K2b and the key K2c) is substantially constant. In the vicinity of the boundary B, the difference D1 and the difference D2 are substantially the same value.

  The difference in pressing load Fx between adjacent keys at the boundary B in a live piano is a difference DBoff when the damper is off and a difference DBon when the damper is on. The difference DBon is almost the same value as the difference D1 and the difference D2 in the vicinity of the boundary B.

  On the other hand, the difference DB in the pressing load Fx between the first key K1a and the second key K2a adjacent at the boundary B is equal to the pressing load Fx between the other two keys K adjacent to each other in the keyboard part KB. It is set sufficiently larger than the largest of the differences D1 and D2. Thereby, a step-like difference occurs in the pressing load Fx at the boundary B (see FIG. 2B). Accordingly, as shown in FIG. 2A, the curve LK1a of the pressing load Fx of the first key K1a and the curve LK2a of the pressing load Fx of the second key K2a There is a greater difference than the difference between. Thereby, the change of the pressing load in the boundary B resembles when the damper of a live piano is off.

  However, since the difference DB is an intermediate value between the difference DBon and the difference DBoff, the difference DB is small compared to the difference DBoff when the damper is off in the live piano. In this keyboard instrument, the pressing load Fx is fixed, but in the first key range, the pressing load Fx is set to an intermediate value at the time of damper on / off of the live piano. Compared to the setting to match the above, there is no significant difference even when compared to either when the damper is on or off. Therefore, when the key K to be played crosses the border B, the sense of change in the pressing load Fx according to the pitch is not too far from any of the live piano damper on / off, and the sense of incongruity becomes small. .

  However, in the present embodiment, the pressing load is set by individually determining the bending length HMa of the rear end portion of the hammer HM. Has a larger pressing load than a live piano. Even so, compared to the setting adjusted when the damper is off, the sense of incongruity is small throughout the entire key pressing process, and it can be said to be the most appropriate setting within a compromiseable range.

  According to the present embodiment, the first key K1a is a key that assumes the highest pitch in a key range with a damper mechanism in a live piano, and is adjacent to the first key K1a and the second key that are adjacent at the boundary B. The difference DB of the pressing load Fx between the key K2a and the key K2a is set larger than that between the other two adjacent keys K. As a result, it is possible to simulate a change in the pressing load according to the pitch when the damper pedal is not depressed on a live piano, and to reduce the sense of discomfort of the key pressing load at the boundary B of the key range divided by the presence or absence of the damper mechanism. . Furthermore, since the difference DB is an intermediate value between the difference DBon and the difference DBoff, it is possible to balance the sense of discomfort of the key depression load when viewed from both when the damper pedal is depressed and when it is not depressed. In particular, since the pressing load Fx at the stroke position STx assuming the position immediately after the damper is separated from the string in the key pressing forward stroke of the live piano is set, the increase of the pressing load due to the action of the damper in the key pressing stroke is increased. Can be simulated.

  By the way, the setting of the pressing load of each key K is not limited to the setting by the setting of the bending length HMa of the hammer HM. For example, a weight may be provided on the key K or the hammer HM. Or you may set in the position of the rotation fulcrum 13 (refer FIG.1 (b)). Or you may provide the reaction force generation | occurrence | production part which has elastic bulging parts, such as rubber | gum, as exclusive use or a key switch combined use. For example, the key pressing sensor 14 (FIG. 1B) is configured to generate an appropriate reaction force. A pressing load is generated by the key K coming into contact with the reaction force generating portion during the key pressing forward stroke.

  FIG. 3A shows the difference in pressing load with respect to the key pressing stroke of the first key K1a and the second key K2a adjacent at the boundary B when such a reaction force generation unit is employed. FIG. 3A is a diagram corresponding to FIG. As shown in FIG. 3A, at the initial stage of key depression, there is no difference in the pressing load (LK1a) of the first key K1a and the pressing load (LK2a) of the second key K2a, and the middle of the key pressing forward process. The second key K2a is larger. In this example, the stroke position STx is a position after the key K has come into contact with the reaction force generator.

  The degree of the reaction force generated by the reaction force generator can be arbitrarily set individually. Therefore, it can be gradually increased as the pitch is higher. Further, the stroke position where the key K abuts against the reaction force generating portion can be arbitrarily set, and may be set to a position where the damper in the live piano is separated from the string. In addition, what contacts the reaction force generation | occurrence | production part is good also as the hammer HM instead of the key K. FIG.

  Further, the following modified example is also conceivable. In the example shown in FIG. 2B, in the first key range, the pressing load Fx is set to an intermediate value between when the live piano is damper-on (Lon) and when the damper is off (Loff). For example, the modification shown in FIG. 3B may be adopted.

  FIG. 3 (b) corresponds to FIG. 2 (b) and is a schematic diagram showing the pressing load at the stroke position STx of each key K in the entire key range for both the live piano and the keyboard instrument. It is. In this modified example, the pressing load of the keyboard instrument is indicated by a curve Loff on the bass side from the boundary B and a curve L3 on the treble side. The pressing load of the live piano is indicated by a curve Lon and a curve Loff on the lower side from the boundary B, and a curve L2 on the higher side.

  That is, in the first key range, the pressing load Fx of the keyboard instrument matches the pressing load Fx when the live piano is on the damper (curve Loff). In the second key range of the keyboard instrument, the pressing load Fx (curve L3) is larger than the pressing load Fx (curve L2) of the live piano, and the curve L3 is located below the virtual extension curve of the curve Loff. , Parallel to the curve L2. The curve L3 can also be expressed as an extension curve of the curve L1 in FIG. Also in this example, the difference in the pressing load Fx between the first key K1a and the second key K2a is the largest of the differences D1, D2 in the pressing load Fx between the other two adjacent keys K. Big enough than. In the example of FIG. 3B, since the curves L2 and L3 are close even in the second key range, the sense of incongruity of the key pressing load is small. On the other hand, in the first key range, the pressing load Fx coincides with that when the damper of the live piano is off. Therefore, when the damper is not used or the damper pedal PD is not originally provided, the feeling of strangeness of the key pressing load is small.

  In the example of FIG. 2B, the pressing load Fx is set to an intermediate value between when the live piano is damper-on (Lon) and when the damper is off (Loff). It may be slightly shifted up and down. In the example of FIG. 3B, the entire curve Loff and curve L3 of the pressing load Fx of the keyboard instrument may be slightly shifted downward in the drawing. Eventually, from the viewpoint of alleviating the sense of incongruity of the key pressing load, the difference in the pressing load Fx between the first key K1a and the second key K2a is determined as a damper on time (Lon) in the first key range of the live piano. And the maximum value of the difference (D1, D2) in the pressing load between the other two keys K adjacent to each other within the range of the difference in pressing load Fx between when the damper is off (Loff). In other words, the size of the step of the pressing load generated at the boundary B may be set to be equal to or smaller than the step of the pressing load generated at the boundary B when the damper of the live piano is off.

  By the way, from the viewpoint of suppressing the sense of discomfort of the key pressing load assuming a damper operation of a live piano, it is sufficient that the pressing load is as shown in FIG. 2B or FIG. 3B at least at the stroke position STx. It is not essential to design the pressing load at other stroke positions as described above. In particular, it is preferable to simulate the load fluctuation due to the engagement between the jack and the hammer roller after the stroke position ST2, but this is another problem to be solved.

  Further, the boundary B is not limited to the above example. For example, the highest pitch of the first key range may be assumed to be the highest pitch among the pitches of the key range having a function of separating the damper from the string by depressing the damper pedal in a live piano. The above-mentioned assumed depth of the live piano at the stroke position STx and the highest pitch assumed by the live piano in the first key range differ depending on the specifications of the live piano, and therefore are not uniquely determined. However, the assumed depth and the assumed maximum pitch of the range that can exist in an existing live piano are included in the present invention. The live piano includes an acoustic upright piano.

  By the way, what has been described above is the setting of the actual pressing load. In the following, a method is described in which musical tone control that matches the load setting is performed to audibly discomfort from the viewpoint of the generated musical tone.

  The control unit 10 adds a sound effect (resonance sound) to the musical sound generated from the musical sound generation unit 15 by the key pressing operation of the key K in the first key range when the ON operation of the damper pedal PD is detected. Control. That is, in a live piano, when the damper pedal is turned on, the string in the first key range is opened and a resonance sound is applied, so that a sound effect that simulates it is generated. In the second key range, no resonance is given regardless of whether the damper is on or off. Thereby, it is possible to harmonize the relationship between the key depression load according to the damper pedal operation and the application of the musical sound effect.

  Further, the control unit 10 controls the volume of each key K using the key pressing velocity detected by the key pressing sensor 14, and increases the volume as the key pressing velocity increases. At this time, for the volume of the musical sound generated by the key pressing operation of the key K in the first key range, the volume of the musical sound according to the key pressing velocity is made variable (varied) depending on whether or not the pedal is operated. . That is, the degree of touch response is variable. Specifically, in the first key range, the volume setting for the same key pressing velocity is made larger when the on operation is detected than when the on operation of the damper pedal PD is not detected. In the second key range, variable control of touch response by damper on / off is not performed.

  For this purpose, for example, as disclosed in Japanese Patent Laid-Open No. 2002-41042, two types of touch curve tables that define the volume with respect to the key depression velocity may be provided, and these may be changed depending on whether or not the pedal is operated. For example, in a live piano, when the damper pedal is on, the key press tends to lighten and the volume increases in the first key range. For this keyboard instrument, only in the first key range when the damper pedal is on. Increase the effectiveness of touch response. Thereby, the relationship between the key depression load corresponding to the damper pedal operation and the musical tone volume can be harmonized. The volume control method is not limited to the touch curve.

  In addition, when it is set as the structure which does not control a sound effect and a touch response according to pedal operation like these, providing damper pedal PD is not essential.

  10 control section (musical sound control section), 14 key press sensor (velocity detection means), 16 pedal operation detection sensor (pedal detection means), KB keyboard section, PD damper pedal, K1a first key, K2a second key, B Boundary, STx Stroke position (predetermined depth), DB, D1, D2 Difference

Claims (6)

In an electronic keyboard instrument having a keyboard part composed of a plurality of keys each operated to be depressed,
The pressing load at a predetermined depth during the key pressing stroke of each of the plurality of keys is set so as to gradually decrease from a bass key to a higher key.
Of the entire key range of the keyboard section, the first low-pitched side adjacent to each other at the boundary between the first key range from the lowest pitch to the predetermined pitch and the second key range from the predetermined pitch to the highest pitch. The difference in the pressing load between the key and the second key on the treble side is set larger than the largest difference among the pressing loads between the other two keys adjacent to each other in the keyboard part. An electronic keyboard instrument characterized by   The predetermined pitch is assumed to be the highest pitch of a key range having a function of separating the damper from the string by depressing a damper pedal in an acoustic piano. Electronic keyboard instrument.   The difference in the pressing load between the first key and the second key is the key with the highest pitch in the key range having a function of separating the damper from the string by depressing the damper pedal in the acoustic piano. The key is set to be equal to or less than a difference in pressing load at a position immediately after the corresponding damper is separated from the corresponding string in the key pressing forward stroke in a non-depressed state of the damper pedal between the key adjacent to the high-pitched side of the key. The electronic keyboard instrument according to claim 1 or 2, wherein   The predetermined depth is a depth assuming a position immediately after the corresponding damper is separated from the corresponding string in the keystroke forward stroke of the acoustic piano, according to any one of claims 1 to 3. Electronic keyboard instrument as described.   A pedal, pedal detection means for detecting operation of the pedal, and a musical sound corresponding to the key that has been depressed, and a predetermined effect is imparted to the musical sound to be generated according to the detection result of the pedal detection means. A musical tone control unit for controlling the musical tone control unit to detect the musical tone generated by the key pressing operation of the key in the first key range when the pedal detection unit detects the pedal on operation. The electronic keyboard instrument according to claim 1, wherein the electronic keyboard instrument is controlled to give the predetermined effect.   A pedal, pedal detection means for detecting the operation of the pedal, velocity detection means for detecting a key pressing velocity of each of the plurality of keys, and generating a musical sound corresponding to the key pressed; A musical tone control unit that controls a volume according to a detection result of the velocity detection means, and the musical tone control unit detects the pedal detection for a musical tone generated by a key pressing operation of a key in the first key range. 6. The volume setting for the same key pressing velocity is made larger when an on operation is detected than when an on operation of the pedal is not detected by the means. Electronic keyboard instrument.

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