JPH06266356A - Sound generation control method of electronic keyboard musical instrument - Google Patents

Abstract

PURPOSE:To control the sound volume to a sound volume corresponding to a keying speed by controlling the sound volume of sound generation with passing time between detection points and controlling the timing of the sound generation at either of detection points. CONSTITUTION:A switch 7 is equipped with an inverted bowl type rubber-made member 12 provided with two movable contacts which come into contact with a fixed contact point on a substrate 11 in order while having a timine difference by a descent of an actuator 8. When a key 4 of a keyboard device is pressed weakly, stopped before a click feeling begins to be obtained, and then continued to press again to the end, one movable contact point of the key switch 7 and the other movable contact point come into contact with the fixed contact in order after the click feeling is given to the player since the key switch 7 is set to specific timing. The electronic circuit which is connected to the key switch 7 generates a sound volume signal corresponding to both the timing difference of the contacting and the keying speed and a speaker sounds according to the sound volume signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume control method for an electronic keyboard instrument such as an electronic piano.

[0002]

2. Description of the Related Art As a conventional electronic piano, when a key is weakly pressed, as shown in FIG. 3, it has a keystroke-keypressing force characteristic with a chevron-shaped increasing portion a before the end of the keystroke, and is acoustic. -It is known that it is similar to a piano key touch.

In an electronic piano having such characteristics,
The sound volume is controlled by the passage time between the first detection point P ₁ and the second detection point P ₂ which are set on the rising side and the falling side of the angle-shaped increasing portion a, and the sound is generated at the second detection point P ₂ . Was controlling the timing.

[0004]

In the above-described conventional electronic piano, when the key is pressed weakly, the reaction force for pressing the key increases at the increasing portion a shown in FIG. 3, so that the pressing speed decreases. If the sound volume is controlled by the passage time between the first detection point P ₁ and the second detection point P ₂ , the sound volume does not match the sense of the performer, and the b portion before the rising portion d of the increasing portion a. In the case of a rendition style in which the key is pressed to the end point after being temporarily stopped at, the counting of the passage time is started at the first detection point P ₁ , so it is difficult to control the volume to correspond to the key pressing speed. There was an inconvenience.

The present invention has been made in order to eliminate such inconveniences of the related art. Even when a wide range of musical performances are expressed using a conventional electronic keyboard instrument, the volume is controlled to a volume corresponding to the key pressing speed. It is an object of the present invention to provide a method of controlling the pronunciation of an electronic keyboard instrument that can be performed.

[0006]

In order to achieve the above-mentioned object, the present invention provides a method of controlling the pronunciation of an electronic keyboard instrument having a mountain-shaped increasing portion before the end of the key stroke in the key pressing force characteristic with respect to the key stroke. In, the first detection point and the second detection point are set on the descending side of the increasing portion of the key stroke, and the sound volume of the sound is controlled by the passage time between the first detection point and the second detection point. It is characterized in that the timing of sound generation is controlled by either the point or the second detection point.

[0007]

When the player depresses the key weakly, when the player depresses the key, the linear portion c of the key stroke-key depressing force characteristic shown in FIG. 1 is obtained.
A feeling of resistance is felt when moving to the rising portion d of the mountain-shaped increasing portion a, and a feeling of dropout is felt when moving from the rising portion d to the falling portion e. That is, the player feels a click when passing the mountain-shaped increasing portion a. This click feeling becomes less likely to be felt as the key is strongly pressed.

In the case of a rendition style in which the player depresses the key weakly, stops once before the ascending part d and then depresses it to the end, the first detection point P ₁ provided on the descending side of the increasing part a The counting of the passage time is started from, and the passage time between the first detection point P ₁ and the second detection point P ₂ is counted, and a sound volume corresponding to the passage time, that is, a sound volume corresponding to the key pressing speed is generated. Even when the performer presses the key weakly and presses it to the end without stopping, the sound is produced at the volume corresponding to the key pressing speed.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 2 shows an example of a keyboard device used for carrying out the method for controlling the pronunciation of an electronic keyboard instrument according to the present invention.

In FIG. 2, reference numeral 1 denotes a keyboard chassis, and a key 4 is swingably supported on a fulcrum 3 on a reed 2 fixed above the chassis 1. A shaft 5 is provided on the upper rear side of the key 4.
A hammer 6 that can swing up and down about the
Resistance when the key 4 is pushed down by the hammer 6 and a restoring force when releasing the key are provided. 7
Is a key switch connected to an electronic circuit including a CPU having a speaker, which is pressed by an actuator 8 provided below the key 4 to start sounding. Reference numeral 9 is a hard angular collision member attached below the key 4,
Reference numeral 0 denotes an elastic member such as rubber or sponge having cushioning properties, which is provided on the chassis 1 and has a corner portion 10a that is temporarily engaged with the corner portion 9a of the collision member 9. As described in detail in Japanese Patent Application No. 4-78290, when the key 4 is pushed down, the collision member 9
The elastic member 10 is deformed due to the collision of the key 4 to change the resistance of the key 4 during swinging, and as shown in FIG. Gives a click feeling and approximates the touch feeling of an acoustic piano.

The key switch 7 includes an actuator 8
Is a rubber switch provided with a rubber member 12 in the shape of an inverted bowl provided with two movable contacts (not shown) that sequentially contact fixed contacts (not shown) on the substrate 11 with a timing difference. The timing at which the contact and the fixed contact are closed and the timing at which the other movable contact and the fixed contact are closed are the first detection point P in the characteristic shown in FIG.
The positions of the two movable contacts provided on the actuator 8 and the rubber member are set so as to be ₁ and the second detection point P ₂ .

When the key 4 of this keyboard device is pressed down weakly, stopped before the click feeling starts, and then pressed down to the end again, the key switch 7 is set as described above, and the player clicks. After giving a feeling, one movable contact and the other movable contact of the key switch 7 sequentially contact the fixed contact. The electronic circuit connected to the key switch 7 generates a volume signal corresponding to the touch timing difference and the keystroke speed, and the speaker produces a sound by the volume signal.

Even when the key 4 is continuously and weakly pressed down to the end point, the player feels a click, and at the timing difference when one movable contact and the other movable contact of the key switch 7 contact the fixed contact, respectively. A volume signal corresponding to the key pressing speed is generated, and the speaker produces a sound by the volume signal.

In the above embodiment, the key switch 7 is
Although a rubber switch is used, various switches such as an optical sensor using a photodiode can be used as long as they have two detection points with different timings.

[0016]

As described above, the present invention has the above-described structure. Therefore, in a keyboard device for an electronic musical instrument that can give a click feeling to a performer, the performer depresses a key weakly before the click feeling occurs. In the case of a playing technique in which the player presses the key to the end after stopping it once, a volume corresponding to the key pressing speed can be generated, and even if the player presses the key continuously and weakly to the end, the player feels This has the effect that a volume corresponding to the matching key pressing speed can be generated.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a pronunciation control method for an electronic keyboard instrument according to the present invention.

FIG. 2 is a side view showing an example of a keyboard device of an electronic keyboard instrument used for implementing the pronunciation control method according to the present invention.

FIG. 3 is an explanatory diagram of a pronunciation control method of a conventional electronic keyboard instrument.

[Explanation of symbols]

4 Key 6 Hammer 7 Key switch 8 Actuator 9 Collision member 10 Elastic member a Angle-shaped increasing part c Straight part d Ascending part e Descent part P ₁ First detection point P ₂ Second detection point

Claims (1)

[Claims] 1. A sounding control method for an electronic keyboard instrument having a key-pressing force characteristic with respect to a key stroke, which has a mountain-shaped increasing portion before the end of the key stroke, in a descending side of the increasing portion of the key stroke and a first detection point and a first detection point. Set 2 detection points,
An electronic keyboard characterized in that the sound volume is controlled by the passage time between the first detection point and the second detection point, and the sounding timing is controlled at either the first detection point or the second detection point. How to control the pronunciation of musical instruments.