EP1752966B1 - Elektronisches Akkordeon - Google Patents

Elektronisches Akkordeon Download PDF

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Publication number
EP1752966B1
EP1752966B1 EP20060118591 EP06118591A EP1752966B1 EP 1752966 B1 EP1752966 B1 EP 1752966B1 EP 20060118591 EP20060118591 EP 20060118591 EP 06118591 A EP06118591 A EP 06118591A EP 1752966 B1 EP1752966 B1 EP 1752966B1
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European Patent Office
Prior art keywords
opening
degree
previously mentioned
air pressure
air
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EP20060118591
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English (en)
French (fr)
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EP1752966A3 (de
EP1752966A2 (de
Inventor
Jun'ichi Roland Corporation Miki
Yoshifumi Roland Corporation Hiraiwa
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Roland Corp
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Roland Corp
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Publication of EP1752966A3 publication Critical patent/EP1752966A3/de
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/32—Constructional details
    • G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
    • G10H2220/155—User input interfaces for electrophonic musical instruments
    • G10H2220/265—Key design details; Special characteristics of individual keys of a keyboard; Key-like musical input devices, e.g. finger sensors, pedals, potentiometers, selectors
    • G10H2220/311—Key design details; Special characteristics of individual keys of a keyboard; Key-like musical input devices, e.g. finger sensors, pedals, potentiometers, selectors with controlled tactile or haptic feedback effect; output interfaces therefor
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2230/00—General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
    • G10H2230/045—Special instrument [spint], i.e. mimicking the ergonomy, shape, sound or other characteristic of a specific acoustic musical instrument category
    • G10H2230/245—Spint accordion, i.e. mimicking accordions; Electrophonic instruments with one or more typical accordion features, e.g. special accordion keyboards or bellows, electrophonic aspects of mechanical accordions, Midi-like control therefor

Definitions

  • the present invention relates to an electronic accordion that is furnished with a keyboard, a bellows, and a sound source, and with which a musical tone is generated in conformance with the operation of the keyboard and the bellows.
  • Patent Reference 1 Japanese Laid-Open Patent Application Publication (Kokai) Number 2002-366145 (Patent Reference 1), an electronic accordion is disclosed with which it is possible to simulate the musical tones that are produced by an acoustic accordion.
  • United States Patent No. 4,196,650 discloses a valve system controlling an opening of the bellows of an electronic accordion depending on the number of keys depressed.
  • U.S. Patent No. 3,250,843 describes a pressure sensor for an electronic accordion, detecting air pressure using two closed pistons arranged to compress a variable resistance element whenever the pressure in the bellows changes.
  • the acoustic accordion has sound holes for each key with which air enters and exits and sound hole covers and reeds that vibrate due to the discharge of air or the intake of air that are furnished at each of the sound holes.
  • the sound hole cover When a key is pressed down, the sound hole cover is opened, and when a key is released, the sound hole cover is closed. Accordingly, when a large number of keys are pressed down, many air holes link through to the outside, the resistance of the airflow is reduced, and it is possible to easily open and close the bellows.
  • these reeds are each furnished with a check valve (reed leather) such that vibration does not occur during the intake of air for a reed that vibrates during air discharge and does not occur during the discharge of air for a reed that vibrates during air intake.
  • a check valve reed leather
  • these check valves are closed when the air pressure in the bellows is a pressure that is the same as atmospheric pressure and when the pressure in the bellows increases or decreases, open again, there is a phenomenon such as that in which the resistance of the air flow becomes higher for an instant.
  • control is carried out in which the air valves with which the bellows has been furnished open and close in conformance with the operation of the keys of the keyboard.
  • the present invention has been done in order to remedy the weaknesses described above and has as its object the provision of an electronic accordion with which an operating feeling can be obtained that closely resembles the operation of the bellows of an acoustic accordion.
  • the electronic accordion cited in Claim 1 is, for one that has been furnished with a keyboard section that has a plurality of operators that prescribe the pitch of a musical tone and the generation and termination of the musical tone, and a bellows that intakes or discharges air, and an air pressure sensor that detects the air pressure in the bellows, and a sound source that forms a musical tone having the pitch that is prescribed by an operator of the previously mentioned keyboard section in conformance with the air pressure that has been detected by the air pressure sensor, furnished with an air valve that adjusts the degree of opening of an air hole with which the air is taken into the previously mentioned bellows or the air in the bellows is discharged, and degree of opening setting means that adjusts the degree of opening of the previously mentioned air valve in conformance with the air pressure that has been detected by the previously mentioned air pressure sensor, and control means that controls the previously mentioned air valve in conformance with the degree of opening that has been set by the previously mentioned degree of opening setting means.
  • the electronic accordion cited in Claim 2 is, for the electronic accordion cited in Claim 1, one in which the previously mentioned degree of opening setting means is one that sets the degree of opening in conformance with the case in which the air pressure that has been detected by the previously mentioned air pressure sensor is greater than atmospheric pressure and the case in which the air pressure is less than atmospheric pressure.
  • the electronic accordion cited in Claim 3 is, for the electronic accordion cited in Claim 1 or Claim 2, one that is furnished with pressed key state detection means that detects the state in which an operator of the previously mentioned keyboard section is being operated, and in which the previously mentioned degree of opening setting means is one in which the degree of opening of the previously mentioned air valve is set in conformance with the pressed key state that has been detected by the previously mentioned pressed key state detection means and the air pressure that has been detected by the previously mentioned air pressure sensor.
  • the electronic accordion cited in Claim 4 is, for the electronic accordion cited in Claim 3, one in which the previously mentioned degree of opening setting means is one that closes the previously mentioned air pressure valve in those cases where the number of pressed keys that has been detected by the previously mentioned pressed key state detection means is zero and sets the degree of opening of the previously mentioned air valve to a minimum degree of opening greater than zero in those cases where the number of pressed keys is one or greater and, moreover, the air pressure that has been detected by the previously mentioned air pressure sensor has been detected to be equal to atmospheric pressure, and that sets the degree of opening greater than the previously mentioned minimum degree of opening in those cases where the number of pressed keys that has been detected by the previously mentioned pressed key state detection means is one or more and, moreover, the air pressure that has been detected by the previously mentioned air pressure sensor is a specified value.
  • the electronic accordion cited in Claim 5 is, for the electronic accordion cited in Claim 4, one in which the previously mentioned degree of opening setting means is one in which the degree of opening of the previously mentioned air valve is altered in those cases where the previously mentioned air pressure has exceeded a specified value.
  • the electronic accordion cited in Claim 6 is, for the electronic accordion cited in any of the Claims 3 through 5, one in which the accordion is furnished with speed setting means that sets the speed at which the degree of opening changes up to the degree of opening that has been set by the previously mentioned degree of opening setting means, and the previously mentioned control means is one that controls the previously mentioned air valve in conformance with the degree of opening that has been set by the previously mentioned degree of opening setting means and the speed that has been set by the previously mentioned speed setting means.
  • the electronic accordion cited in Claim 7 is, for the electronic accordion cited in Claim 6, one in which the previously mentioned degree of opening setting means sets a first degree of opening in conformance with the pressed key state and the air pressure that has been detected by the previously mentioned air pressure sensor in those cases where the pressed key state has been detected to have changed by the previously mentioned pressed key state detection means, and sets a second degree of opening in those cases where the pressed key state is fixed and the air pressure that has been detected by the previously mentioned air pressure sensor has been detected to have changed, and the previously mentioned speed setting means sets a first speed that changes the degree of opening up to the first degree of opening that has been set by the previously mentioned degree of opening setting means, and, after the degree of opening of the air valve reaches the degree of opening that has been set by the previously mentioned degree of opening setting means, sets a second speed, and the previously mentioned control means controls the previously mentioned air valve at the first speed up to the first degree of opening during the time that the pressed key state that has been detected by the previously mentioned pressed key state
  • the electronic accordion cited in Claim 8 is, for the electronic accordion cited in Claim 6 or 7, one in which the previously mentioned speed setting means is one that sets both the speed in those cases where the degree of opening is increased and the speed in those cases where the degree of opening is decreased.
  • the electronic accordion cited in Claim 9 is, for the electronic accordion cited in Claim 8, one in which the previously mentioned speed setting means sets the speed in conformance with the air pressure that has been detected by the previously mentioned air sensor in those cases where the degree of opening is increased and sets a fixed speed in those cases where the degree of opening is decreased.
  • the electronic accordion cited in Claim 10 is, for the electronic accordion cited in any of the Claims 6 through 9, one in which the previously mentioned speed setting means is one that sets the speed in conformance with the case in which the air pressure that has been detected by the previously mentioned air pressure sensor is greater than atmospheric pressure and the case in which the air pressure is less than atmospheric pressure.
  • the degree of opening setting means is one that sets the degree of opening in conformance with the case in which the air pressure that has been detected by the air pressure sensor is greater than atmospheric pressure and the case in which the pressure is less than atmospheric pressure.
  • the degree of opening setting means is one that closes the air pressure valve in those cases where the number of pressed keys that has been detected by the pressed key state detection means is zero and sets the degree of opening of the air valve to a minimum degree of opening greater than zero in those cases where the number of pressed keys is one or greater and, moreover, the air pressure that has been detected by the air pressure sensor has been detected to be equal to atmospheric pressure, and that sets the degree of opening greater than the minimum degree of opening in those cases where the number of pressed keys that has been detected by the pressed key state detection means is one or more and, moreover, the air pressure that has been detected by the air pressure sensor is a specified value.
  • the degree of opening setting means is one in which the degree of opening of the air valve is altered in those cases where the value that is specified for the air pressure has been exceeded.
  • the degree of opening setting means sets a first degree of opening in conformance with the pressed key state and the air pressure that has been detected by the air pressure sensor in those cases where the pressed key state has been detected to have changed by the pressed key state detection means, and sets a second degree of opening in those cases where the pressed key state is fixed and the air pressure that has been detected by the air pressure sensor has been detected to have changed
  • the speed setting means sets a first speed that changes the degree of opening up to the first degree of opening that has been set by the degree of opening setting means, and, after the degree of opening of the air valve reaches the degree of opening that has been set by the degree of opening setting means, sets a second speed
  • the control means controls the air valve at the first speed up to the first degree of opening during the time that the pressed key state that has been detected by the pressed key state detection means does not change, and, after the degree
  • the speed setting means is one that sets both the speed in those cases where the degree of opening is increased and the speed in those cases where the degree of opening is decreased, there is the advantageous result that it is possible to set speeds that are different in those cases where the degree of opening increases and where the degree of opening decreases.
  • the speed setting means sets the speed in conformance with the air pressure that has been detected by the air sensor in those cases where the degree of opening is increased and sets a fixed speed in those cases where the degree of opening is decreased.
  • the vibration of the reeds starts when the keys or the performance buttons are pressed down.
  • the amplitude gradually increases and in those cases where the air pressure in the bellows and atmospheric pressure differ greatly, the change in the amplitude is rapid.
  • the key or performance button that is being pressed down is released, the flow path of the air is blocked without regard to the pressure of the bellows and it is possible to simulate this kind of condition.
  • the speed setting means is one that sets the speed in conformance with the case in which the air pressure that has been detected by the air pressure sensor is greater than atmospheric pressure and the case in which the pressure is less than atmospheric pressure, it is possible to set the speed at which the air valve opens and closes in those cases where the bellows is expanded as well as in those cases where the bellows is compressed, there is the advantageous result that it is even more possible to produce an operating feeling that closely resembles that of the bellows of an acoustic accordion.
  • Fig. 1 shows the exterior of the electronic accordion 1, which is a preferred embodiment of the present invention.
  • the keyboard 2 and the plurality of register switches 4 are furnished on the right hand operating section that is operated with the right hand and the keys 3, which comprise a plurality of white keys and black keys, are furnished on the keyboard 2.
  • the plurality of register switches 4, with which the timbres of the musical tones that have been performed by the keys 3 are set, are furnished behind the keyboard 2.
  • a sensor is furnished for each key 3 and each register switch 4 and the state in which they are being operated is detected.
  • the accompaniment section 7, which has the plurality of performance buttons 8 furnished, and the plurality of register switches 9, with which the timbres of the musical tones that are performed using the accompaniment section 7, are furnished on the left hand operating section that is operated with the left hand.
  • a sensor is also furnished for each performance button 8 and each register switch 9 and the state in which they are being operated is detected.
  • the performance information is sent to the sound source 24 (refer to Fig. 3 ) and a musical tone is generated or terminated by the sound source 24.
  • the performance information is in a format that has been prescribed in accordance with the MIDI standard and, in those cases where a key 3 has been pressed down, a Note On message that comprises the status, which indicates the key that has been pressed down, the MIDI channel, the note number, which indicates the pitch of the key that has been pressed down, and a value that specifies the velocity value (hereinafter, referred to as the "Note On”), is formed.
  • a Note Off message that comprises the status, which indicates the key that has been released, the MIDI channel, the note number, which indicates the pitch of the key that has been released, and a value that specifies the velocity value (hereinafter, referred to as the "Note Off”), is formed.
  • the performance information that indicates the timbre that is set to the register switch 4 that has been turned on is sent to the sound source 24.
  • the performance information that directs the timbre is a program change in accordance with the MIDI standards and comprises the status that indicates the timbre that is directed, the MIDI channel, and the program number.
  • the bass or chords are assigned to the large number of performance buttons 8 of the accompaniment section 7 that are performed with the left hand and the timbres for these are selected and set by means of the register switches 9.
  • the Notes On that correspond to the plurality of sounds that comprise the chord are sent to the sound source 24.
  • the performance button 8 that directs the chord of C major has been pressed down the three Notes On that have the note numbers for which the letter notations are C, E, and G are sent to the sound source.
  • a bellows 6 that is the same as that of an acoustic accordion is furnished between the right hand keyboard 2 and the left hand accompaniment section 7 and an air pressure sensor 5 is furnished that detects the pressure of the air inside the bellows 6.
  • the air pressure inside the bellows 6 becomes greater than atmospheric pressure and the air in the bellows 6 is discharged via the air valve 14.
  • the air pressure inside the bellows 6 becomes less than atmospheric pressure and the air from outside is taken into the bellows 6 via the air valve 14.
  • a release button that is not shown in the drawing is furnished on the left hand side and a valve to mechanically release the bellows 6 can be operated no matter what state the air valve 14 is in. Since in those cases where the air valve 14 is closed and a key 3 or a performance button 8 has not been pressed down, the opening and closing of the bellows 6 cannot be done, a valve that mechanically releases the bellows 6 has been furnished separately and a release button has been furnished that opens that valve. This is something that can be used in those cases where the bellows 6 is opened or closed in any position and is operated, in particular, in those cases where the performance has ended and the bellows 6 is then closed.
  • the MIDI channel is set to 1
  • the MIDI channel of the chord that is generated in those cases where the accompaniment section 7 has been operated is set to 2
  • the MIDI channel of the bass sound is set to 3.
  • the air pressure in the bellows 6 is detected by the air pressure sensor 5 and the MIDI standard control change that directs the volume is used.
  • the control change is transmitted for all of the MIDI channels that are set to the keyboard 2 and the accompaniment section 7.
  • the electrical control circuit 12 and the battery 11 that supplies power to the electrical control circuit 12, the speaker 26, the air hole 19 with which the air in the bellows 6 is taken in or discharged, and the air valve 14 that controls the flow path of the air between the air hole 19 and the bellows 6 are furnished inside the right hand keyboard 2.
  • Fig. 2 shows the details of the air valve 14
  • Fig. 2(a) is an oblique view drawing that shows the exterior of the air valve 14
  • Fig. 2(b) is a cross-section drawing that shows the interior of the air valve 14.
  • the bellows 6 and the air valve 14 are linked by the air pipe 13
  • the air valve 14 has the flow path 15 in its interior
  • the air valve 14 is linked to the air hole 19.
  • the air hole 19 is furnished with a filter (not shown in the drawing) that is formed from a net and felt and the like inside the net so as not to suck in dirt and dust.
  • the throttle 16 which opens and closes the flow path 15 that is circular in cross-section, is disposed so that it is free to rotate with the diameter in the vertical direction of the circular flow path 15 as the axis.
  • the throttle 16 is formed from a disk that follows along the inner circumference of the circular flow path 15.
  • Fig. 2(b) shows a state in which the valve has been rotated roughly 45 degrees.
  • the shaft of the throttle 16 is connected to the shaft of the pulse motor 17 and it is possible to drive the throttle 16 to a specified angle by inputting a single pulse to the pulse motor 17 in the opening direction or the closing direction.
  • Fig. 3 is a block diagram that shows the electrical configuration of the electronic accordion 1.
  • the electronic accordion 1 comprises the CPU 21, the ROM 22, the RAM 23, the pulse motor 17, the keys 3 and performance buttons 8, the register switches 4 and 9, the air sensor 5, the sound source 24, the amp 25, and the speaker 26.
  • the CPU 21, the ROM 22, the RAM 23, the sound source 24, and the amp 2.5, are formed into the electrical control circuit I2.
  • the CPU 21 is a central processing unit and executes each of the various programs that are stored in the ROM 22.
  • the ROM 22 stores the control programs and the fixed data that are referred to when those programs are executed.
  • In the fixed data are set such things as the timbre parameters that are set by the timbres that have been assigned to each of the register switches 4 and 9 and the like and, for each timbre, how many reeds produce sounds for one note and the like is set.
  • a timer is built into the CPU 21 and is configured such that when a time that has been set is clocked, an interrupt is generated by the CPU 21.
  • the RAM 23 possesses areas that store each of the required areas, flags, and the like that are each of the various register groups store when the CPU 21 executes the control programs and is a memory that can be accessed and be overwritten randomly.
  • the sound source 24 generates or terminates a musical tone in conformance with the performance information such as the Note On or the Note Off and the like that are sent from the CPU 21.
  • the sound source has a plurality of sound production channels and can generate a plurality of musical tones at the same time.
  • the musical tone signal that is generated by the sound source 24 is amplified by the amp 25 and emitted as sound from the speaker 26.
  • Fig. 4 is a flowchart that shows the main processing that is executed by the CPU 21. This processing is carried out repeatedly from when the power to the electronic accordion 1 is turned on until the power is turned off.
  • S1 the initial settings are carried out (S1).
  • a flag is set to "pressure.”
  • the key degree of opening and the pressure degree of opening are set in those cases where a key 3 or a performance button 8 has been operated and the pressure degree of opening is set in those cases where the pressure in the bellows 6 has changed.
  • the degree of opening of the air valve 14 is first controlled so as to arrive at the key degree of opening and after the key degree of opening has been arrived at, is controlled so as to arrive at the pressure degree of opening.
  • the flag is set to "key” and in those cases where the control is carried out so as to arrive at the pressure degree of opening, the flag is set to "pressure.”
  • the current degree of opening and the opening number are set to 0.
  • the opening number here simulates the number of sound holes that are opened by the operation of the keys 3 or the performance buttons 8 and if one key 3 of the keyboard 2 is pressed down and the timbre that has been selected by the register switch 4 is one that uses one reed, the opening number is increased by 1. If the timbre that has been selected is one that uses two reeds, the opening number is increased by 2.
  • the opening number is increased by 3 and if the timbre is one that uses two reeds, the opening number is increased by 6.
  • Fig. 5 through Fig. 8 are flowcharts that show the air valve control processing, which is processing in which the degree of opening of the air valve 14 and the speed up to that degree of opening is set in conformance with the operation of the keys 3, the performance buttons 8, and the bellows 6.
  • Fig. 5 shows the processing in which the degree of opening is set in conformance with the operation of a key 3 or a performance button 8 and
  • Fig. 6 shows the processing in which the degree of opening is set in conformance with the operation of the bellows 6.
  • Fig. 7 and Fig. 8 show the processing in which the speed for the opening and closing of the air valve 14 from the current degree of opening to the degree of opening that has been newly set is controlled by a timer interrupt.
  • the degree of opening is made the value in which the opening number is multiplied by the opening percentage (S25).
  • the opening percentage is the degree of opening that corresponds to the air pressure for each opening number and is stored in a table and the like that corresponds to the air pressure.
  • the degree of opening is made 100 (S27).
  • the key degree of opening is set in conformance with the value of the degree of opening referring to the step table and the pressure degree of opening is set to the key degree of opening (S28).
  • the step table is one with which the degree of rotation of the throttle 16 of the air valve 14 is set in conformance with the degree of opening.
  • the degree of rotation of the throttle 16 is proportional to the number of pulses that are supplied to the pulse motor 17, but since the degree of rotation of the throttle 16 is not proportional to the facility of the flow of the air (the airflow for the case in which the air pressure is fixed), this is a table with which the number of pulses that are supplied to the pulse motor 17 are converted in conformance with the degree of opening so as to make the degree of opening and the facility of the flow of the air roughly proportional.
  • the pressure degree of opening is set to the key degree of opening (S28).
  • the key degree of opening that is set primarily by the keys 3 or the performance buttons 8 and the pressure degree of opening that is set primarily by the change in the air pressure inside the bellows 6 are each set for the purpose of simulating the reactive force that is the action of the bellows of an acoustic accordion. It is set up such that the modes for the case in which the control of the degree of opening is in accordance with the key degree of opening and the case in which the control of the degree of opening is in accordance with the pressure degree of opening are different.
  • the opening number at the present time is 0 (S43).
  • the opening number is, as discussed previously, set to a value greater than 0 if any of the keys 3 or the performance buttons 8 has been pressed down. Accordingly, in those cases where none of the keys 3 or the performance buttons 8 has been pressed down, the opening number is 0.
  • the degree of opening is set to 0 making it so that the air valve 14 is to be completely closed (S44).
  • the degree of opening is set to the minimum value that is not 0, which has been specified in advance.
  • the threshold value is equivalent to the pressure value in an acoustic accordion for opening the check valve and making the air flow in to the reed and in those cases where the threshold value has been exceeded, the setting is such that the air valve 14 is opened.
  • the calculation of S48 is identical to the processing of S25 in the flowchart that is described in Fig. 5 .
  • a determination is made as to whether or not the degree of opening that has been obtained in this manner is greater than 100 (S49) and in those cases where the degree of opening is greater than 100 (S49: yes), the degree of opening is made 100 (S50).
  • the step table is referred to and the pressure degree of opening is set in conformance with the value of the degree of opening (S51).
  • a determination is made as to whether or not the current degree of opening, which is the degree of opening at the present time is equal to the pressure degree of opening (S52).
  • the timer is set to a fixed value and the interrupt processing ends(S69).
  • the flag is set to "pressure” and, the timer interrupt processing is prohibited (S70), and the interrupt processing ends.
  • the speed at which the air valve opens and closes is the identical fixed magnitude both in the case of opening and in the case of closing.
  • the pulse motor 17 is set one pulse in the direction of closing of the air valve 14, the current degree of opening is decreased by 1, and the width, which is time that is set to the timer, is set to a value that corresponds to the air pressure for the case in which the air valve 14 is controlled in the direction of closing (S72).
  • the current degree of opening is not larger than the pressure degree of opening (S71: no)
  • the pulse motor 17 is set one pulse in the direction of opening of the air valve 14, the current degree of opening is increased by 1, and the width, which is the time that is set to the timer, is set to a value that corresponds to the air pressure for the case in which the air valve 14 is controlled in the direction of opening (S74).
  • the value of the width that has been set is set to the timer and the processing ends.
  • the speed becomes different for the case in which the control of the air valve 14 is in the direction of opening and for the case in which the control of the air valve 14 is in the direction of closing and, together with this, the speeds are also different depending on the magnitude of the air pressure.
  • the degree of opening is set not only by the opening number due to the operation of the keys 3 and the performance buttons 8, but also in accordance with the air pressure in the bellows 6, it is possible for the action to be made to closely resemble the behavior of the bellows of an acoustic accordion.
  • a new degree of opening is set and the speed is set at which the air valve 14 moves from the current degree of opening to the degree of opening that has been newly set in accordance with the operation of the keys 3, the performance buttons 8, and the bellows 6, it is possible for the operation to more closely resemble the behavior of the bellows of an acoustic accordion.
  • the degree of opening setting means that is cited in Claim 1 is equivalent to the processing of S25 of the flowchart described in Fig. 5 and of S48 of the flowchart described in Fig. 6
  • the control means is equivalent to the processing of S66 and S68 of the flowchart described in Fig. 7 and of S72 and S74 of the flowchart described in Fig. 8
  • the pressed key state detection means that is cited in Claim 3 is equivalent to the processing of S2 of the flowchart described in Fig. 4
  • the speed setting means that is cited in Claim 6 is equivalent to the processing of S66, S68, and S69 of the flowchart described in Fig. 7 and of S72, S74, and S75 of the flowchart described in Fig. 8 .
  • the degree of opening has been made a value in which the opening number has been multiplied by the opening percentage but it has been set up such that the degree of opening can be derived by means of the product of the opening percentage and the opening number and a coefficient that is set by the performer and in those cases where the coefficient that is set by the performer is greater than 1, the degree of opening is set larger and in those cases where the coefficient that is set by the performer is less than 1, the degree of opening is set smaller.
  • the form of the reed and the like is different depending on the pitch, it may be set up such that the degree of opening and the opening and closing speed differ in conformance with the pitch that is prescribed by the key 3 of the keyboard or the performance button 8. Since the length of a reed having a pitch that is low is long, the amplitude of vibration of the tip of the reed is great and, together with this, the size of the opening becomes large. In addition, because the length of a reed having a low pitch is long, the vibration is begun at a low air pressure but because the length of a reed having a high pitch is short, if the air pressure is not high to some extent, the vibration will not start.
  • the forms and materials of the reeds are different depending on the timbre, it may be set up such that the degree of opening and the opening and closing speed differ in conformance with the timbre that is prescribed by the register switches 4 and 9.
  • the forms and materials of the reeds also are different depending on the manufacturer and the model and the aspects of the vibrations are different. With regard to the materials, usually, aluminium is employed and extra-hard aluminium alloys and the like are used in high-quality units. Since together with generating a pure sound, the aspect of the vibrations is different from ordinary aluminium, the simulation of that condition may also be done.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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Claims (10)

  1. Elektronisches Akkordeon (1), aufweisend: einen Tastatur-Abschnitt (2), der eine Mehrzahl von Bedienelementen (3) aufweist, die die Höhe eines musikalischen Tons und das Erzeugen und Beenden des musikalischen Tons bestimmen, und einen Balg (6), der Luft einzieht oder ausstößt, und einen Luftdrucksensor (5), der den Luftdruck in dem Balg (6) detektiert, und eine Schallquelle, die einen musikalischen Ton erzeugt, der eine Höhe hat, die von einem Bedienelement (3) des vorgenannten Tastatur-Abschnitts (2) in Übereinstimmung mit dem von dem Luftdrucksensor (5) detektierten Luftdruck bestimmt wird, wobei das Akkordeon (1) ein Luftventil (14) aufweist, das den Öffnungsgrad eines Luftlochs anpasst, mit welchem die Luft in den vorgenannten Balg (6) eingezogen oder die Luft in dem Balg (6) ausgestoßen wird, und dadurch gekennzeichnet ist, dass es aufweist: ein Öffnungsgrad-Einstellungs-Mittel (16), welches den Öffnungsgrad des vorgenannten Luftventils (14) in Übereinstimmung mit dem Luftdruck, der von dem zuvor genannten Luftdrucksensor (5) detektiert wurde, anpasst, und ein Steuermittel (21), welches das vorgenannte Luftventil (14) in Übereinstimmung mit dem Öffnungsgrad steuert, der von dem vorgenannten Öffnungsgrad-Einstellungs-Mittel (16) eingestellt wurde.
  2. Elektronisches Akkordeon (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass das vorgenannte Öffnungsgrad-Einstellungs-Mittel (16) eines ist, das den Öffnungsgrad entsprechend dem Fall, in dem der von dem vorgenannten Luftdruck-Sensor (5) detektierte Luftdruck größer als der atmosphärische Druck ist, und dem Fall, in dem der Luftdruck geringer als der atmosphärische Druck ist, einstellt.
  3. Elektronisches Akkordeon (1) gemäß Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass das Akkordeon (1) ein Mittel zum Detektieren eines gedrückten Tastenzustands aufweist, welches den Zustand detektiert, in dem ein Bedienelement (3) des vorgenannten Tastatur-Abschnitts (2) betätigt wird, und das vorgenannte Öffnungsgrad-Einstellungs-Mittel (16) eines ist, bei dem der Öffnungsgrad des vorgenannten Luftventils (14) in Übereinstimmung mit dem gedrückten Tastenzustand, der von dem vorgenannten Mittel zum Detektieren eines gedrückten Tastenzustands detektiert wurde, und dem Luftdruck, der von dem vorgenannten Luftdruck-Sensor (5) detektiert wurde, eingestellt wird.
  4. Elektronisches Akkordeon (1) gemäß Anspruch 3, dadurch gekennzeichnet, dass das vorgenannte Öffnungsgrad-Einstellungs-Mittel (16) eines ist, das in den Fällen, in denen die Anzahl von gedrückten Tasten (3), die von dem vorgenannten Mittel zum Detektieren eines gedrückten Tastenzustands detektiert wurde, gleich Null ist, das vorgenannte Luftdruckventil (14) schließt, und in den Fällen, in denen die Anzahl von gedrückten Tasten (3) eins oder mehr beträgt und ferner der Luftdruck, der von dem vorgenannten Luftdrucksensor (5) detektiert wurde, als gleich dem atmosphärischen Druck detektiert wurde, den Öffnungsgrad des vorgenannten Luftventils (14) auf einen minimalen Öffnungsgrad größer Null einstellt, und das in den Fällen, in denen die Anzahl von gedrückten Tasten (3), die von dem vorgenannten Mittel zum Detektieren eines gedrückten Tastenzustands detektiert wurde, eins oder mehr beträgt und ferner der Luftdruck, der von dem vorgenannten Luftdrucksensor (5) detektiert wurde, ein bestimmter Wert ist, den Öffnungsgrad auf größer als den vorgenannten minimalen Öffnungsgrad einstellt.
  5. Elektronisches Akkordeon (1) gemäß Anspruch 4, dadurch gekennzeichnet, dass das vorgenannte Öffnungsgrad-Einstellungs-Mittel (16) eines ist, bei dem der Öffnungsgrad des vorgenannten Luftventils (14) in den Fällen, in denen der vorgenannte Luftdruck einen bestimmten Wert überschritten hat, verändert wird.
  6. Elektronisches Akkordeon (1) gemäß einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass das Akkordeon (1) ein Geschwindigkeits-Einstellungs-Mittel aufweist, das die Geschwindigkeit einstellt, mit welcher der Öffnungsgrad zu dem Öffnungsgrad wechselt, der von dem vorgenannten Öffnungsgrad-Einstellungs-Mittel (16) eingestellt wurde, und dass das vorgenannte Steuermittel (21) eines ist, welches das vorgenannte Luftventil (14) in Übereinstimmung mit dem Öffnungsgrad, der von dem vorgenannten Öffnungsgrad-Einstellungs-Mittel (16) eingestellt wurde, und der Geschwindigkeit, die von dem vorgenannten Geschwindigkeits-Einstellungs-Mittel eingestellt wurde, steuert.
  7. Elektronisches Akkordeon (1) gemäß Anspruch 6, dadurch gekennzeichnet, dass das vorgenannte Öffnungsgrad-Einstellungs-Mittel (16) in den Fällen, in denen der gedrückte Tastenzustand von dem vorgenannten Mittel zum Detektieren eines gedrückten Tastenzustands als verändert detektiert wurde, einen ersten Öffnungsgrad in Übereinstimmung mit dem gedrückten Tastenzustand und dem Luftdruck einstellt, der von dem vorgenannten Luftdrucksensor (5) detektiert wurde, und in den Fällen, in denen der gedrückte Tastenzustand unveränderlich ist und der Luftdruck, der von dem vorgenannten Luftdrucksensor (5) detektiert wurde, als verändert detektiert wurde, einen zweiten Öffnungsgrad einstellt, und dass das vorgenannte Geschwindigkeits-Einstellungs-Mittel eine erste Geschwindigkeit einstellt, die den Öffnungsgrad bis zu dem ersten Öffnungsgrad verändert, der von dem vorgenannten Öffnungsgrad-Einstellungs-Mittel (16) eingestellt wurde, und, nachdem der Öffnungsgrad des Luftventils (14) den Öffnungsgrad erreicht, der von dem vorgenannten Öffnungsgrad-Einstellungsmittel (16) eingestellt wurde, eine zweite Geschwindigkeit einstellt, und dass das vorgenannte Steuermittel (21) das vorgenannte Luftventil (14) während der Zeit, in welcher der gedrückte Tastenzustand, der von dem vorgenannten Mittel zum Detektieren eines gedrückten Tastenzustands detektiert wurde, sich nicht ändert, bis zu dem ersten Öffnungsgrad mit der ersten Geschwindigkeit steuert, und nachdem der Öffnungsgrad des Luftventils (14) den ersten Öffnungsgrad erreicht, das Luftventil (14) bis zu dem zweiten Öffnungsgrad mit der zweiten Geschwindigkeit steuert.
  8. Elektronisches Akkordeon (1) gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, dass das vorgenannte Geschwindigkeits-Einstellungs-Mittel eines ist, das die Geschwindigkeit in den Fällen einstellt, in denen der Öffnungsgrad vergrößert wird, sowie die Geschwindigkeit in den Fällen einstellt, in denen der Öffnungsgrad verkleinert wird.
  9. Elektronisches Akkordeon (1) gemäß Anspruch 8, dadurch gekennzeichnet, dass das vorgenannte Geschwindigkeits-Einstellungs-Mittel die Geschwindigkeit in den Fällen, in denen der Öffnungsgrad vergrößert wird, in Übereinstimmung mit dem Luftdruck einstellt, der von dem vorgenannten Luftdrucksensor detektiert wurde, und in den Fällen, in denen der Öffnungsgrad verkleinert wird, eine feste Geschwindigkeit einstellt.
  10. Elektronisches Akkordeon (1) gemäß einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass das vorgenannte Geschwindigkeits-Einstellungs-Mittel eines ist, das die Geschwindigkeit in Übereinstimmung mit dem Fall, in dem der von dem vorgenannten Luftdrucksensor (5) detektierte Luftdruck größer als der atmosphärische Druck ist, und dem Fall, in welchem der Luftdruck geringer als der atmosphärische Druck ist, einstellt.
EP20060118591 2005-08-08 2006-08-08 Elektronisches Akkordeon Active EP1752966B1 (de)

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EP2779154A1 (de) 2013-03-11 2014-09-17 ROLAND EUROPE S.p.A. Elektrisch gesteuertes Steuerventil, um den Luftstrom eines Balges eines elektronischen Akkordeons zu steuern.

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JP5827484B2 (ja) 2011-03-29 2015-12-02 ローランド株式会社 楽音制御装置
CN102956225A (zh) * 2012-11-13 2013-03-06 无锡商业职业技术学院 一种电子手风琴
US9747875B2 (en) * 2015-10-22 2017-08-29 Tanate Ua-Aphithorn Accordion and electronic accordion
US9520112B1 (en) * 2015-10-22 2016-12-13 Tanate Ua-Aphithorn Accordion, electronic accordion, and computer program product
DE102017109702B4 (de) * 2017-05-05 2020-07-23 Telegärtner Elektronik GmbH Elektronisches Akkordeon
CN110390924B (zh) * 2019-07-31 2024-10-08 天津华韵乐器有限公司 一种电子手风琴
IT202000013048A1 (it) * 2020-06-01 2021-12-01 Beltuna Accordions S R L Elettrovalvola per controllare il flusso d'aria di un mantice di una fisarmonica
WO2024024649A1 (ja) * 2022-07-26 2024-02-01 株式会社バンダイ 発音玩具
JP7286203B1 (ja) 2022-07-26 2023-06-05 バイバイワールド株式会社 発音玩具
KR102597777B1 (ko) * 2023-03-13 2023-11-03 김설희 기능성이 개선된 포터블 피아노

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EP2779154A1 (de) 2013-03-11 2014-09-17 ROLAND EUROPE S.p.A. Elektrisch gesteuertes Steuerventil, um den Luftstrom eines Balges eines elektronischen Akkordeons zu steuern.

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EP1752966A2 (de) 2007-02-14
DE602006003697D1 (de) 2009-01-02
JP4386287B2 (ja) 2009-12-16
JP2007047246A (ja) 2007-02-22

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