Music – Instruments – Electrical musical tone generation
Patent
1997-05-02
1998-07-07
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84622, 84DIG9, G10H 112
Patent
active
057772550
ABSTRACT:
An efficient digital waveguide synthesizer is disclosed for simulating the tones produced by a non-linearly excited vibrational element coupled to a resonator, such as in a piano. In a preferred embodiment, the synthesizer creates an excitation pulse from a table containing the impulse response of a piano soundboard and enclosure. Alternatively, this excitation pulse can be synthesized by filtering white noise. The excitation pulse is fed into a filter that simulates the collision of the piano hammer and string. Because the hammer-string interaction is nonlinear, the characteristics of this filter vary with the amplitude of the tone produced. The filtered excitation pulse is then fed into a filtered delay line loop which models the vibration of a piano string. Because the excitation pulse already contains the effects of the resonator, the tone produced by the delay line loop does not require additional filtering in order to model the resonator.
REFERENCES:
patent: 4622877 (1986-11-01), Strong
patent: 4683589 (1987-07-01), Scholz et al.
patent: 4951144 (1990-08-01), Des Jardins
patent: 5050217 (1991-09-01), Orban
patent: 5256830 (1993-10-01), Takeuchi et al.
patent: 5264658 (1993-11-01), Umeyama et al.
patent: 5286913 (1994-02-01), Higashi
patent: 5286915 (1994-02-01), Komano et al.
patent: 5290969 (1994-03-01), Kobayashi
patent: 5317104 (1994-05-01), Frost
patent: 5373098 (1994-12-01), Kitayama et al.
patent: 5438571 (1995-08-01), Albrecht et al.
patent: 5500486 (1996-03-01), Smith, III
patent: 5587548 (1996-12-01), Smith, III
patent: 5641931 (1997-06-01), Ogai et al.
Smith, III Julius O.
Van Duyne Scott A.
Fletcher Marlon T.
Shoop Jr. William M.
Stanford University
LandOfFree
Efficient synthesis of musical tones having nonlinear excitation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Efficient synthesis of musical tones having nonlinear excitation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient synthesis of musical tones having nonlinear excitation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1208329