Portable drum sound simulator generating multiple sounds
Patent 5062341 Issued on November 5, 1991. Estimated Expiration Date: 
December 29, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 29, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and instrument for generating acoustic and/or visual effects by human body actions Control apparatus for electronic musical instrument Patent #: 4776253 InventorsAssigneeApplicationNo. 458601 filed on 12/29/1989US Classes:84/702, Envelope shaping (e.g., attack, decay, sustain, or release, etc.)84/738Envelope shaping (e.g., attack, decay, sustain, or release, etc.)ExaminersPrimary: Witkowski, Stanley J.Attorney, Agent or FirmForeign Patent References
International ClassesG10H 001/057G10H 005/00 AbstractA portable drum sound simulator is provided which includes an electronic drum sound generating means capable of generating a plurality of drum-like sound outputs and energizable in response to electrical trigger signals. Also included is a tone pitch varying means which varies by a plurality of steps the tone pitch of the drum-like sound outputs. A switch allows a user to select a desired drum-like sound output and another switch allows a user to select a desired tone pitch for the drum-like sound output. These two switches are each mounted on a respective drumstick each of which also includes a normally open electrical switch. These electrical switches are connected to the drum sound generating means and when closed causes a trigger circuit to develop a trigger signal which energizes the drum sound generating means so as to generate the drum-like sound output.Field of SearchWith variable filteringWith space discharging means With transistor With space discharging means With transistor With space discharging means Noise reduction (e.g., error prevention, etc.) Stops Fundamental tone detection or extraction Force or velocity responsive Electric analog oscillators With magnetic selector With capacitive selector Priority or preference circuits Transposition With frequency multiplication or division Selecting circuits Variable frequency With variable resistance selector Multiplexing or scanning Envelope shaping (e.g., attack, decay, sustain, or release, etc.) Attack and decay Loudness control Drumsticks Envelope shaping (e.g., attack, decay, sustain, or release, etc.) Tremolo Selecting circuits Indicators Including electric light or electric sounder | |
