Yamaha Corporation

Kinya Nozaki

Hajime Hayashida

Shigeru Muramatsu

Kiyoshi Kawamura

Toshiya Yamada

Toshiaki Sakai

Motoichi Numata

Akira Takemura

A wireless piano-touch electric sound producer comprises a keyboard assoicated with key action mechanisms and hammers driven for rotation upon depressing the assoicated keys, and a board accompanied with an absorber is shared between the hammer units for scaling down of the electric sound producer, wherein a memory unit stores pieces of vibratory information for reproducing sounds from vibrations on musical wires and board members of an acoustic piano so that a driver unit produces vibrations on a sound board of the electric sound producer on the basis of one of the pieces of vibratory information selected upon detecting actions of the keys to the hammers.

Stringless piano-touch electric sound producer for directly driving a

In a sound board assembly for a musical instrument, a plurality of straight-grain wood veneers are joined together in a plane to form a plate unit having front and rear surfaces. Each of the wood veneers has two lateral sides which extend in a direction along the grain of the wood veneer. The lateral sides of the wood veneer serve respectively as a pair of abutments. One of the pair of abutments of one of each pair of adjacent wood veneers is abutted against and joined to one of the pair of abutments of the other wood veneer. A plurality of voids are formed inside of the plate unit. Substantially, the voids are formed along a neutral plane of the plate unit which is in the middle of the two surfaces. Thanks to the voids in the plate unit, the above sound board assembly is capable of sufficiently exhibiting the merit of a woody sound, capable of setting the sound quality artificially and freely, and capable of realizing the woody sound that has more warmth than in the case where high-quality natural woods are used.

Sound board assembly for musical instruments

A mechanical keyboard according to the present invention has a main sostenuto pedal mechanism for holding off a damper associated with a key depressed and an auxiliary sostenuto pedal mechanism provided for keys of a bass range for holding off the associated damper or dampers, and the auxiliary pedal is provided in the vicinity of a soft pedal for easy depression.

Mechanical keyboard instrument with pedal mechanisms

Growing community of inventors

Shizuoka, Japan

Kinya Nozaki