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US 2017/0263232 A1Published application
Optoelectronic pickup for musical instruments
AssigneeLight4Sound
InventorWaleed Sami Haddad
Life of this patent
Estimating the term…
Abstract
An optoelectronic pickup for a musical instrument includes at least one light source which directs light to impinge a sound generating element of the musical instrument in at least one photoreceiver located to detect the reflected light, so as to generate an electrical signal that is responsive to sound generating element movement.
Claims20
An optoelectronic pickup, comprising:
- at least one light source configured to direct light to impinge an instrument string of a musical instrument;
- a plurality of photoreceivers configured to detect light emitted by the at least one light source and reflected from the instrument string, the plurality of photoreceivers electrically coupled such that an electrical signal generated by a particular photoreceiver is inverted relative to an electrical signal generated by a photoreceiver adjacent to the particular photoreceiver;
- and
- a filter arrangement coupled to one or both of the at least one light source and the plurality of photoreceivers, the filter arrangement configured to control affects of spurious light upon an electrical signal produced by the plurality of photoreceivers, the spurious light comprising light energy that impinges the plurality of photoreceivers and is unrelated to a condition of the instrument string.
1 more element
An optoelectronic pickup, comprising:
- at least one light source configured to direct light to impinge an instrument string of a musical instrument;
- a plurality of photoreceivers configured to detect light emitted by the at least one light source and reflected from the instrument string, the at least one light source and the plurality of photoreceivers defining a light source-photoreceiver set, and one of the light source-photoreceiver sets associated with one of a plurality of instrument strings;
- and
- a filter arrangement coupled to one or both of the at least one light source and the plurality of photoreceivers of each light source-photoreceiver set, the filter arrangement configured to control affects of spurious light upon an electrical signal produced by each of the light source-photoreceiver sets, the spurious light comprising light energy that impinges the plurality of photoreceivers and is unrelated to a condition of the instrument string.
1 more element
An optoelectronic pickup, comprising:
- at least one light source configured to direct light to impinge an instrument string of a musical instrument;
- a plurality of photoreceivers configured to detect light emitted by the at least one light source and reflected from the instrument string;
- and
- a filter arrangement coupled to one or both of the at least one light source and the plurality of photoreceivers and configured to control affects of spurious light upon an electrical signal produced by the plurality of photoreceivers, the spurious light comprising light energy that impinges the plurality of photoreceivers and is unrelated to a condition of the instrument string;
- the pickup configured to determine a position of the instrument string as it vibrates and produce the electrical signal based at least in part on the determined position of the instrument string.
2 more elements
Dependencies are inferred from the claim text.