Patent ID: 7569758

Claim:
An electronic percussion system for generating electronic sounds, comprising: an electronic percussion instrument including a frame, a supporting member supported on said frame and inwardly projecting from said frame, a vibratory layer supported by said frame and having a first surface and a second surface reverse to said first surface, said first surface being adapted to be struck by a player for generating an initial vibration followed by subsequent vibrations, a damper having an outer periphery closer to said frame and an inner periphery closer to a center of said vibratory layer than said outer periphery, said damper being held by said supporting member to be in contact with a part of said vibratory layer for suppressing said vibrations of said vibratory layer, an area of said damper varying repeatedly between a maximum value and a minimum value along the periphery of said part of said vibratory layer, said area of said damper being minimized at first portions of said inner periphery closest to said center of said vibratory layer and maximized at second portions of said inner periphery closest to said outer periphery, and a vibration-to-electric signal converter held in contact with another part of said vibration layer free from said damper and producing an electric signal representative of said initial vibration and said subsequent vibrations; an electronic sound generator connected to said vibration-to-electric signal converter, and producing an audio signal on the basis of said electric signal; and a sound sub-system connected to said electronic sound generator, and generating said electronic sounds from said audio signal.