JPH07104754A - Electronic musical instrument-incorporated piano - Google Patents

Abstract

PURPOSE:To enable a musical performance without any feeling of physical disorder similarly to playing on an acoustic piano even by an electronic sound source. CONSTITUTION:The moving speed of a key 5 is detected by key sensors 33 and 35. On the basis of the detected key stroke strength, key stroke strength after conversion is found by referring to a conversion table which is stored in a ROM 43 and shown a touch curve. The electronic sound source 9 and an amplifier 11 are controlled on the basis of the key stroke strength after the conversion and a sound is outputted from a speaker. The key stroke strength after the conversion is data showing sound volume, but the conversion table in this example is so set that the same sound volume as the acoustic piano is set even when an electronic piano is played with a touch on the acoustic piano, so the piano can be played without any feeling of physical disorder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piano with a built-in electronic musical instrument, which has a mechanism for controlling and controlling an electronic sound source in addition to a normal playing mechanism for playing by striking strings.

[0002]

2. Description of the Related Art Conventionally, in an electronic piano or the like which plays in response to the depression of a key on a keyboard, an electronic sound source is controlled in accordance with the state of keystrokes to generate musical tones for performance. In this electronic piano, in order to detect the state of keystrokes, a sensor is arranged below the keys to detect touch information (touch data) such as key movement speed information (that is, keystroke strength information). There is. Further, in order to change the sounding level according to the keystroke strength, adjustment is performed by the sensitivity of key touch (key touch effectiveness) with respect to the keys of the keyboard.

The effectiveness of the key touch defines the relationship between the data indicating the strength of keystroke and the magnitude of the signal output to the sound source (that is, the tone generation level). For example, FIG.
As shown in, diagonal line for changing data (touch curve)
By using, the pre-conversion touch data (on the horizontal axis) is changed to the post-conversion touch data (on the vertical axis), and the sound output level is adjusted based on the post-conversion touch data.

Then, in order to set the effectiveness of the key touch, a map corresponding to the touch curve is stored in advance in the ROM or the like.

[0005]

However, in the so-called electronic musical instrument built-in piano, in which an electronic sound source is combined with an acoustic piano so that not only a normal piano performance but also an electronic sound source can be performed, a so-called conventional electronic piano is used. If the touch curve is used as it is, there is a problem that the generated electronic sound and the live sound of the piano have a feeling of strangeness.

That is, since the keyboard used in the electronic musical instrument built-in piano is the same as a normal acoustic piano, the state of the force received by the finger from the keyboard by the action mechanism or the like is, of course, greatly different from that of the conventional electronic piano. There is. Specifically, the action mechanism of the piano has different characteristics for each key, so when playing with an electronic sound source, when you play the acoustic piano as if you were playing it, the sound actually emitted from the electronic sound source is generated. There was a problem that the (electronic sound) was quite different from the sound desired by the performer (the live sound of the piano). There is also a problem that the more you are accustomed to the piano touch with an acoustic piano, the more uncomfortable you feel when playing with an electronic sound source.

The present invention has been made in order to solve the above problems, and provides an electronic musical instrument built-in piano capable of playing a musical instrument with an electronic sound source without causing a feeling of strangeness as in the case of playing an acoustic piano. The purpose is to

[0008]

To achieve this object, the invention of claim 1 incorporates an electronic musical instrument having an electronic sound source in an acoustic piano, as shown in FIG.
In an electronic musical instrument built-in piano that uses a shared keyboard for each performance, input state detection means M2 for detecting an input state by the key M1 of the keyboard as input information when playing with the electronic musical instrument, and Key M
Change data storage means M for storing change data such as a map or a formula used to change the degree of effectiveness of 1.
3 and input information changing means M4 for changing the input information of the key M1 detected by the input state detecting means M2 based on the change data stored in the change data storing means M3. A gist of an electronic musical instrument built-in piano is characterized in that the change data stored in the data storage means M3 is set so that the sounding state when the electronic musical instrument is operated becomes the sounding state when the acoustic piano is operated.

A second aspect of the present invention provides the electronic musical instrument built-in piano according to the first aspect, characterized in that the change data is changed according to a specific key or a key group. Here, as the change data, so-called touch data that changes the sound generation level according to the keystroke speed (keystroke strength) can be adopted.

The specific key or group of keys can be realized by, for example, dividing a black key and a white key, or dividing a key on the keyboard into a plurality of areas.

[0011]

In the piano with a built-in electronic musical instrument according to the present invention, the input state detecting means M2 detects the input state by the key M1 on the keyboard of the piano as input information when the electronic musical instrument is played. Then, the input information of the key M1 detected by the input state detecting means M2 is stored in the change data storing means M3 using change data such as a map or an arithmetic expression used for changing the effectiveness of the key M1. Then, it is changed by the input information changing means M4. Particularly, in the present invention, since the change data stored in the change data storage means M3 is set so that the sounding state during operation of the electronic musical instrument becomes the sounding state during operation of the acoustic piano, a normal acoustic piano is used. If you operate the electronic musical instrument with a touch of touch, that is, if you press a key on the keyboard (which is shared by the acoustic piano and the electronic musical instrument), you can obtain a sound similar to that of a normal acoustic piano without any discomfort.

Further, in the invention of claim 2, since the change data is changed according to a specific key or a key group such as two key groups of a black key and a white key, the change data is stored. It is possible to reduce the amount of data.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. Here, FIG. 2 is a block diagram showing a schematic configuration of the upright piano of this embodiment, and FIG. 3 is an explanatory diagram showing a string striking mechanism and a blocking mechanism of the upright piano.

As shown in FIG. 2, the upright piano 1 of this embodiment is provided with a string striking mechanism 7 for striking a string in response to an operation of a key 5 on a keyboard 3 as in an ordinary piano. Can be played as. At the same time, the electronic tone generator 9 controlled according to the operation of the same keyboard 3 is also built in, and can be played as an electronic piano through a speaker or headphones (not shown).

The upright piano 1 includes, in addition to the string striking mechanism 7 and the electronic sound source 9 described above, an amplifier 11 connected to the electronic sound source 9, a handphone terminal 13, and a speaker terminal 15.
And a blocking mechanism 17 for blocking the generation of a musical sound by the string striking mechanism 7 during the performance by the electronic sound source 9, and the keyboard 3
The control section 19 controls the electronic sound source 9 in accordance with the operation of to perform a performance.

Next, each of the above components will be described in detail. First, as shown in FIG. 3, the string striking mechanism 7 is similar to a conventional upright piano. That is, the string striking mechanism 7
When the key key 5 of the keyboard 3 is depressed by the player's key depression operation and the rear end 5a swings upward, the bat 25 is pushed up by the jack 23 so that the hammer shank 27 approaches the string S. Turn to. Then, when the jack 23 further rises, the bat 25 separates from the jack 23, the hammer shank 27 starts inertial movement (rotational movement), and finally the hammer 29 provided at the tip of the hammer shank 27 is moved. Strike the string S.

On the lower surface of the key 5 on the tip side, the key 5
A stepped shutter 31 and key sensors 33 and 35 are provided as means for detecting the operation related to the key depression / key release. Each of the key sensors 33 and 35 includes a light emitting element and a light receiving element as a pair, and is configured to emit an ON signal when the two elements are blocked. That is, the stepped shutter 31 blocks the optical paths of the key sensors 33 and 35 with a certain time difference when the key 5 is pressed, so that the moving speed of the key 5 can be obtained from this time difference. The structure and operation of this type of string striking mechanism 7 are disclosed in detail in, for example, Japanese Patent Application No. 5-214411.

On the other hand, the blocking mechanism 17 is also shown in FIG.
As shown in, the rail 37 is provided between the hammer shank 27 and the string S. The rail 37 is a long member extending in both left and right directions of the piano 1 (the vertical direction of the paper surface of FIG. 3), and is shown in a solid line position (operation blocking position) and dotted position (operation permitting position). ) Is movably provided by a rail drive solenoid 38 (FIG. 2) and the like. Therefore, when the blocking mechanism 17 prevents the string-striking sound from being produced by the string-striking mechanism 7 (that is, when a performance is performed by an electronic sound source), the rail 3 is used.
The hammer shank 27, which is fixed at the operation preventing position and rotates by the inertial motion, contacts the rail 37 at the position indicated by the dotted line in the figure. Therefore, the hammer 29 does not strike a string, and no stringing sound is generated. The structure and operation of the blocking mechanism 17 of this type are described in Japanese Patent Application No. 5-21.
No. 4411 and the like are disclosed in detail.

The control section 19 for controlling the electronic sound source 9 is, as shown in FIG.
43, a RAM 45, and the like, which are configured as a logical operation circuit, and select either the electronic tone generator 9 and the key sensors 33 and 35 and the performance by the string striking mechanism 7 or the electronic tone generator 9 via the input / output interface 47. It is connected to the changeover switch 49 for switching.

When the performance of the string striking mechanism 7 is selected by the change-over switch 49, the control section 19 moves and fixes the rail 37 of the blocking mechanism 17 to the operation permitting position (see FIG. 3) so that the string striking sound is generated. Set it so that it can be played. At this time, the control unit 19 does not control the electronic sound source 9. On the other hand, when the performance of the electronic piano by the electronic sound source 9 is selected by the changeover switch 49,
The rail 37 of the blocking mechanism 17 is moved and fixed to the operation blocking position, and the electronic sound source 9 can be controlled by the control unit 19.

Further, the control section 19 determines which key 5
Of the key sensor 33, 35 of the key sensor 33, 35 is detected, and the time and the time difference of blocking the optical path of the key sensor 33, 35 are detected, and the type of the key 5 and the key are determined based on the control program stored in the ROM 43. Touch data indicating the moving speed (that is, the keystroke strength) of is generated. That is, performance information is created according to the signals from the key sensors 33 and 35, and this is output to the electronic sound source 9 for control.
Examples of the touch data include data indicating a key number that is a pitch and data indicating a keying strength that is a volume.

Further, in the present embodiment, the ROM 43 stores data for converting key-strength data into speaker volume in order to match the speaker volume during electronic piano performance with the volume during actual acoustic piano performance. That is, a touch curve for converting touch data is stored as a map (conversion table). As a result, when the electronic piano is being operated, even if the key 5 is pressed with the same key touch as when playing the acoustic piano, it is possible to make a sound as if the acoustic piano was playing.

The touch curve stored in the ROM 43 is preset as follows. Here, a method of determining the conversion table of the touch curve for the C4 sound of the middle tone in the 88-key keyboard will be described as an example. First, as shown in FIG. 4A, a linear touch curve showing the relationship between the detected keystroke strength (horizontal axis) and the converted keystroke strength (vertical axis: corresponding to the actual sounding volume) 1
Create with 27 scales.

Next, with the electronic piano turned off, the acoustic piano is actually played, and the volume of the piano at that time is recorded with a microphone or the like, as shown in FIG. 4 (b).
A touch curve showing the relationship between the detected keystroke strength and the actual acoustic piano volume is created.

Next, with the electronic piano turned on,
Play the electronic piano, record the piano volume output from the speaker at that time with a microphone, etc.
A touch curve showing the relationship between the detected keystroke strength and the actual volume of the electronic piano is created as shown in FIG.

As is apparent from FIGS. 4 (b) and 4 (c), even when the piano is played with the same keystroke strength, the volume is different when played as an acoustic piano and as an electronic piano. It's very different. Therefore, in this embodiment, as shown in FIG.
With reference to the touch curves of (b) and (c), the same volume is output when played with the same keystroke strength even when setting the acoustic piano or the electronic piano. Set the touch curve. Note that this touch curve may be set for each key 5, or for example, two types may be set separately for the black key and the white key.

Next, the operation of the upright piano 1 of this embodiment having such a configuration will be described with reference to FIG. 3 and FIG. First, when the function of the upright piano 1 is set to the acoustic piano by the changeover switch 49, as shown in FIG. 3, since the rail 37 is arranged at the above-mentioned operation permission position, the hammer 29 is used. You can hit strings. Therefore, the keyboard 3 can be operated in the same manner as an ordinary piano to actually perform a performance by striking a string.

On the other hand, when the function of the upright piano 1 is set to the electronic piano by the changeover switch 49, the rail 37 is arranged at the above-mentioned operation blocking position. Therefore, it is not possible to produce a sound by striking a string like a normal piano, and the electronic sound source 9 is controlled by operating the keyboard 3 to perform a musical performance through a speaker.

In this case, as shown in the flowchart of FIG. 5, first, at S100, the moving speed of the key 5 (keystroke strength).
Is detected by the key sensors 33 and 35. Next, S11
At 0, the detected keystroke strength is referred to the conversion table stored in the ROM 43 as shown in the touch curve of FIG. 4D to obtain the converted keystroke strength. Then, in subsequent S120, the electronic sound source 9 and the amplifier 11 are controlled based on the converted keystroke strength data, and a sound is produced from the speaker. The keystroke strength after conversion is data indicating the volume which is the strength of pronunciation, but the conversion table of the present embodiment is, as described above, even when the electronic piano is played by touching the acoustic piano in advance. , Since the volume is set to be the same as when playing an acoustic piano, it is possible to perform without any discomfort.

That is, the upright piano 1 of this embodiment
Since the above-described conversion table is provided, even when the electronic piano is played, it can be played with the touch of playing the acoustic piano, and at that time, sound is produced at the same volume as when playing the acoustic piano. Therefore, even when practicing or playing while listening to the headphones or the speaker, it is possible to perform the music without feeling uncomfortable as if playing the acoustic piano.

Therefore, it is possible to practice with the same touch as an acoustic piano while using headphones or the like in any environment such as at night, which has an advantage that the efficiency of the practice is significantly improved. In particular, in this embodiment,
There is no problem that the discomfort at the time of playing with an electronic piano increases as the player gets used to the piano touch with an acoustic piano.

It is needless to say that the present invention is not limited to the above embodiments and can be implemented in various modes within the scope of the gist of the present invention. For example, in the above-described embodiment, the conversion table indicating the touch curve is used to change the touch data, but other than that, the arithmetic expression is stored in the ROM and the touch data is converted by the arithmetic expression. You may

Further, the conversion table may be provided by dividing the keyboard into a plurality of left and right areas and dividing each area. Furthermore, instead of connecting the speaker to the speaker terminal,
A speaker may be attached to the piano body.

Further, in this embodiment, the sound output from the speaker is collected by the microphone to create the touch curve, but other than that, the output of the headphone terminal or the speaker terminal may be used, or other Line Out. If a terminal is provided, that terminal may be used.

Further, as a blocking mechanism for blocking the sounding by the string striking mechanism, a rail 53 for blocking the operation of the catcher shank 51 may be provided as shown in FIG. 3, for example. Further, the blocking mechanism does not necessarily have to block the movement of the hammer which is inertially moving. That is, as described in, for example, Japanese Patent Laid-Open No. 63-216099, the hammer rail is rotated by the pressing means to press the hammer against the string, and the locking means holds the hammer in this pressed state. Such a blocking mechanism (sound stop mechanism) may be used.

Of course, the present invention can also be applied to a grand piano incorporating an electronic musical instrument. The grand piano is described in detail in Japanese Patent Application No. 5-214411 by the present applicant.
When the control unit 19 creates the event data forming the MIDI information, it is composed of a status byte of 1 byte and a data byte of 2 bytes.
It is possible to adopt data in which bytes are one unit. Data indicating key depression (note on), key release (note off), etc. is set in the status byte, and the key number (note number) that is the pitch and the keystroke strength (velocity) that is the volume are set in the data byte. ) Etc. are set.

[0037]

As described in detail above, in the electronic musical instrument built-in piano according to the first aspect, the change data for changing the effect of the stored key is the sounding state when the electronic musical instrument is operated when the acoustic piano is operated. Since it is set to be in a sounding state, if the electronic musical instrument is operated with a touch of playing a normal acoustic piano, a sound similar to that of a normal acoustic piano can be obtained without a sense of discomfort. Therefore, there is an effect that the performance of the piano is improved by the practice and the performance by the electronic musical instrument.

According to the second aspect of the invention, since the change data is changed according to a specific key or a key group such as two key groups of a black key and a white key, the change data is stored. Data can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a schematic configuration of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the upright piano of the present embodiment.

FIG. 3 is an explanatory diagram showing an internal configuration of the upright piano of the present embodiment.

FIG. 4 is a graph showing a conversion touch curve for changing touch data according to the present embodiment.

FIG. 5 is a flowchart showing a control process of this embodiment.

FIG. 6 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

1 ... Upright piano 3 ... Keyboard 5 ... Key 7 ... String striking mechanism 9 ... Sound source 17 ... Blocking mechanism 19 ... Control unit 33, 35 ... Key sensor 41 ... CPU 37, 53 ... Rail 43 ... ROM

Claims (2)

[Claims] 1. An electronic musical instrument built-in piano equipped with an electronic sound source in an acoustic piano, wherein a shared keyboard is used for each performance, and a key of the keyboard is used when playing with the electronic musical instrument. Input state detection means for detecting an input state by the input as input information, change data storage means for storing change data such as a map or a formula used to change the effectiveness of the key, and the input state detection means Input information change means for changing the input information of the key detected by the change data storage means based on the change data stored in the change data storage means, and the change data stored in the change data storage means The feature is that the pronunciation state when operating the instrument is set to the pronunciation state when operating the acoustic piano. Electronic musical instrument built-in piano that. 2. The electronic musical instrument built-in piano according to claim 1, wherein the change data is changed according to a specific key or a key group.