摘要:
A keyboard assembly for an electronic musical instrument comprises at least a plurality of keys, a key support member and a plurality of key-return springs. The key support member rotatably supports the keys; and the key-return spring is provided between the key and key support member so as to press up the key to a normal position. Mechanical parameters which affect a key scaling to key-touch responses of the keys are sizes, shapes and locations of parts of the keyboard assembly, which are set by analyzing motions of an action mechanism of an acoustic piano. For example, weight of the key is adjusted using a deadweight member so as to provide a specific key-touch response for the key. An amount of elastic resilience, made by the key-return spring, is adjusted by changing at least one location, at which one end of the key-return spring is terminated, so as to provide a specific key-touch response for the key. Viscous resistance, made by viscous material, such as grease, which is provided between a selected portion of the key and some member, such as a key guide and a support-point member, is adjusted by changing shape and/or size of that member, so as to provide a specific key-touch response for the key. The key scaling is performed by changing the key-touch response with respect to each of the keys; or the key scaling is performed by changing the key-touch response with respect to a selected division of the keyboard.
摘要:
A keyboard assembly for an electronic musical instrument comprises at least a plurality of keys, a key support member and a plurality of key-return springs. The key support member rotatably supports the keys; and the key-return spring is provided between the key and key support member so as to press up the key to a normal position. Mechanical parameters which affect a key scaling to key-touch responses of the keys are sizes, shapes and locations of parts of the keyboard assembly, which are set by analyzing motions of an action mechanism of an acoustic piano. For example, weight of the key is adjusted using a deadweight member so as to provide a specific key-touch response for the key. An amount of elastic resilience, made by the key-return spring, is adjusted by changing at least one location, at which one end of the key-return spring is terminated, so as to provide a specific key-touch response for the key. Viscous resistance, made by viscous material, such as grease, which is provided between a selected portion of the key and some member, such as a key guide and a support-point member, is adjusted by changing shape and/or size of that member, so as to provide a specific key-touch response for the key. The key scaling is performed by changing the key-touch response with respect to each of the keys; or the key scaling is performed by changing the key-touch response with respect to a selected division of the keyboard.
摘要:
A keyboard apparatus for an electronic musical instrument includes a key displacement detection unit. The key displacement detection unit includes a first resilient member, a movable member connected to the first resilient member, a second resilient member connected to the movable member, and a base fixing member connected to the second resilient member. The base fixing member may be directly or indirectly fixed to a keyboard musical instrument so that the key displacement detection unit is mounted to the keyboard musical instrument. A first displacement detection sensor is coupled with the first resilient member for detecting a key depression force in a key depression-release direction, and a second displacement detection sensor is coupled with the second resilient member for detecting a key depression force in a key arrangement direction. Both the first displacement detection sensor and the second displacement sensor are mounted on the key displacement detection unit. The first resilient member and the second resilient member are connected to the movable member in a folded manner. As a result, the key displacement detection unit becomes small in size and yet provides a relatively large displacement in the first and the second resilient members with a relatively small key depression force.
摘要:
A keyboard assembly is constructed by assembling keyboard units. Herein, a hook is formed at one end of the keyboard unit, while an engaging portion (e.g., recess) is formed at another end of the keyboard unit. So, the keyboard units are assembled together in such a way that a hook of a keyboard unit engages with a recess of an adjacent keyboard unit. The keyboard unit is constructed by piling up at least a white key unit having white keys and a black key unit having black keys. Each key unit is formed by the resin to integrally contain keys, connections and a key support. The keys are connected to the key support by the connections such that each of the keys is supported to have a capability of swinging up and down in key-depression-release directions. The connection is constructed by a thick-wall portion whose width is greater than a width of a back end of the key and a thin-wall portion which works as a hinge. In addition, a gate-corresponding portion corresponding to a gate of a metal mold for formation of the key unit is formed at an intermediate position, in a width direction of the key, of the thick-wall portion of the connection. So, the resin material is put into the gate-corresponding portion(s) to perform formation of the key unit. Incidentally, the keyboard assembly can be constructed by a key unit having keys and a lower case which is subjected to flattening and downsizing.
摘要:
A musical-tone-control apparatus having digit members worn along the fingers and contracting and expanding in the longitudinal directions of the digit members in response to the bending and straightening of the fingers. The bending of the digit members is detected by detectors coupled to the digit members and the generation of musical tones is controlled on the basis of the detected signal, i.e. the bending of the fingers. The contraction and expansion of the digit members facilitates the bending and straightening of the fingers. The digit members can also rotate in a plane of the hand to further facilitate the movement of the fingers. The digit members are made to bend about the axes positioned on the third joint of the fingers or the second joint of the thumb (the joint just below the root of the fingers or the thumb), which makes the bending of the digit much easier. A palmar member that supports the digit members are curved to conform the shape of the palm, which makes the bending of the fingers easier as well as preventing the displacement of the palm member.
摘要:
An electronic musical tone signal controller has a resilient operating member, at least two sensors mounted on the operating member at at least two different positions in the longitudinal direction so as to detect the distortion amount of the operating member, a musical tone control signal generating unit for obtaining a force applied to the operating member and a force-applied position of the operating member in accordance with a signal outputted from each sensor, and generating a control signal corresponding to the obtained force and position, and a musical tone signal generating unit for generating a musical tone signal in accordance with the control signal supplied from the musical tone control signal generating unit. The direction of a force applied to the operating member may be obtained by using signals from the sensors to generate a control signal corresponding to the force direction. The tone signal controller is suitable for an electronic musical instrument which generates a continuous tone from a key depression force.
摘要:
The present invention relates to an angle sensor for musical tone control which controls a musical tone in response to changing angles at an articulation of the human body. Both ends of a pair of plate members are coupled pivotally and movably around an axis parallel to both faces of plate members. This pair of plate members are attached on the interior side of articulation of the human body by attaching means to generate a signal in response to the bending motion of the articulation. Thus, a musical tone control signal in response to the bending angles is outputted from detecting means which is placed on the plate members to control musical tone.
摘要:
In an operating panel device for an electronic musical instrument, in order to provide easy mode-changeover operation and to enable the user to easily catch the relationship between respective operating knobs and the functions selected by the operating knobs in respective modes, the operating panel device comprises a plurality of operating members arranged in a row on the panel; a display window provided near and along the row of these operating members; an elongated indicating member rotatably supported on the rear side of the panel and having a plurality of indicating sections on which the names of functions of the musical instrument and/or the names of tonal characteristics settable for respective operating knobs in respective set modes are inscribed on its circumference so as to selectively appear on the display window; a plurality of LEDs arranged in a row to correspond to the operating knobs respectively. The user selects one of the setting modes by rotating the indicating member, and the operating knobs perform functions then shown on the indicating section in the display window.
摘要:
A keyboard musical instrument has an instrument housing and a keyboard chassis integrally formed as a single piece. The keyboard musical instrument has at least one key movably supported on the keyboard chassis, a lower limit stopper for limiting the lowest descending position of the at least one key, a key switch including a movable contact and a fixed contact provided between the at least one key and the keyboard chassis, and an upper limit stopper disposed between the at least one key and the keyboard chassis for limiting an upper-most ascending position of the at least one key. The upper limit stopper is provided on a member that is independent of the keyboard chassis.