Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2011-05-03
2011-05-03
Fletcher, Marlon T (Department: 2832)
Music
Instruments
Electrical musical tone generation
C084S610000, C084S622000, C084S625000, C084S634000, C084S650000, C084S659000, C084S660000, C084S666000, C084S723000, C084S104000, C084S41100A
Reexamination Certificate
active
07935881
ABSTRACT:
Methods and apparatus for simulating the sound of a specific percussion instrument. A first stored waveform representative of the impulse response of the specific percussion instrument is convolved with a second waveform representing of the vibrations produced when a playing surface is struck, scraped or rubbed by a hand-held implement manipulated by a human player. A control interface produces a control signal indicative of a desired audio effect, and a signal processor modifies the spectral components of the output waveform produced by the convolution in response to the control signal to produce a modified output waveform that manifests the desired audio effect.
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Fletcher Marlon T
Massachusetts Institute of Technology
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