Music – Instruments – Electrical musical tone generation
Patent
1997-05-13
1999-03-23
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84615, 84653, 84DIG25, G10H 132
Patent
active
058862790
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a switch mechanism of a piano with a built-in electronic musical instrument, provided with a mechanism for controlling electronic sound source in addition to a string striking mechanism.
BACKGROUND ART
Conventionally, a piano with an electronic mechanism built therein is proposed, in which an acoustic piano is combined with an electronic sound source for providing an acoustic musical performance and a musical performance from an electronic sound source (refer to the patent application laid-open No. 63-216099, and the patent application No. 5-214411 by the applicant of this application). In such piano, during the electronic sounding, musical sound produced by striking strings (referred to as string striking sound hereinafter) can be stopped by various inhibition mechanisms (sound stop means). While string striking sound is stopped, a player can play the piano listening sound from the electronic sound source via a headphone. Therefore, the player can practice the piano without being heard outside in the night time, and various other advantages can be expected.
Since the aforementioned piano is provided with various electronic circuits (for example, a control circuit for controlling the electronic sound source), power switches for electrically connecting and disconnecting the electronic circuits and a power supply need to be disposed on a predetermined position of the piano. Like the other conventional electronic pianos, the power switches are mounted on the surface of the piano by making a hole in the covering material of the piano.
The visible power switches on the surface distinguish the piano from an acoustic piano, and impair the appearance of the piano. Furthermore, the making of holes in the surface of the piano is an additional manufacture process step.
To control electronic sound, the piano with the built-in electronic musical instrument needs to have a volume switch for adjusting sound volume during the musical performance, and can be provided with a tone switch for changing tone.
When a known slide switch or other volume switch, and a tact switch or other tone switch are provided on the surface of the piano, a process step of making a hole in the surface is added to the manufacture process. Additionally, as aforementioned, these visible switches impair the appearance of the piano.
DISCLOSURE OF THE INVENTION
An object of the invention developed for solving the problem is to provide a piano with an electronic musical instrument built therein and a switch mechanism, which obviates the necessity of holes made in the surface of the piano for providing switches on the surface and does not impair the appearance of the piano.
To attain the aforementioned object, the invention recited in claim 1 provides a piano having keyboard, mechanism, controlled according to the operation of the keyboard, and producing the string striking sound during the performance of the electronic musical instrument.
The piano with the electronic musical instrument build therein is characterized by a change switch for changing the operation condition of the electronic musical instrument in response to operation of the pedal.
The invention recited in claim 2 provides a piano having keyboard, mechanism, electronic sound source in response to the operation of the keyboard, and producing the string striking sound during the performance of the electronic sound source controlled by the controller.
The switch mechanism of the piano is characterized by a power switch for electrically connecting and disconnecting the controller and the power supply in response to operation of the pedal.
The invention recited in claim 3 provides formed in the side of an opening for passing through the pedal in a front base, and the pedal is stepped on and slid toward the indentation such that the controller and the power supply are electrically connected and disconnected.
For the pedal, a loud pedal, a soft pedal, a muffler pedal (mainly provided on an upright piano), a sostenuto pedal (mainly provided on a gr
Donels Jeffrey W.
Kabushiki Kaisha Kawai Gakki Seisakusho
Shoop Jr. William M.
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