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US 4,907,483 AGranted
Musical instrument sustainers and transducers
OwnerFloyd D. Rose, Steven M. Moore +1inventors
InventorsFloyd D. Rose, Steven M. Moore, Richard W. Knotts
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OwnerFloyd D. Rose, Steven M. Moore +1inventors
InventorsFloyd D. Rose, Steven M. Moore, Richard W. Knotts
Estimating the term…
A sustainer for providing sustained sounds from a musical instrument has a feedback circuit for converting a pickup signal representing a vibration of a string or other vibratory element to a drive signal and applying drive forces to the vibratory element responsive to the drive signal. The sustainer is arranged to compensate for the phase lag of the pickup signal relative to motion of the vibratory element and to compensate for the phase lag of the drive forces provided by the driver relative to the drive signal. The feedback circuit may be arranged to provide a phase difference between the drive signal and the pickup signal such that the phase difference varies with frequency towards a drive signal leading phase difference with increasing frequency. This phase compensation provides enhanced response of the strings in the fundamental mode of vibration. The driver preferably is arranged so that the drive forces applied to the strings do not vary with lateral movement of the strings.
A sustainer for a musical instrument having a vibratory element comprising:
A sustainer for a musical instrument having a vibratory element, said sustainer comprising feedback means for accepting a pickup signal representing vibration of the vibratory element of the instrument and converting said pickup signal to a drive signal so that for at least some frequencies of said pickup signal said drive signal differs in phase from said pickup signal and said phase difference varies with frequency, such variation being towards a drive signal leading phase difference with increasing frequency, and drive means for applying a drive force to the vibratory element of the instrument responsive to said drive signal.
A sustainer for a musical instrument having a vibratory element, said sustainer comprising feedback means for accepting a pickup signal representing vibration of at least one vibratory element of the instrument and converting said pickup signal to a drive signal, drive means for applying a drive force to the vibratory element of the instrument responsive to said drive signal and control means for determining the frequency content of said pickup signal and altering the phase transfer function of the sustainer depending on said frequency content.
A sustainer for a musical instrument of the type having a plurality of strings extending in generally a lengthwise direction and disposed side-by-side so as to define an array extending in lateral directions transverse to said lengthwise direction, said sustainer comprising:
Dependencies are inferred from the claim text.