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US 9,794,724 B1Granted
Ultrasonic speaker assembly using variable carrier frequency to establish third dimension sound locating
AssigneeSony Corporation
InventorsPeter Shintani, Gregory Carlsson
Life of this patent
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Abstract
Audio effects are played on ultrasonic (US) speakers mounted on a gimbal assembly. The audio effects channel demands an elevation, azimuth, and radial distance along which the audio effects are to be transmitted, and the gimbal assembly moves or a speaker is selected according to the audio effects channel. The demanded radial distance is established by altering the carrier frequency of the US sound.
Claims20
A system comprising:
- at least one ultrasonic (US) speaker configured to emit ultrasonic signals, the ultrasonic signals modulating demanded audio;
- and
- at least one computer memory that is not a transitory signal and that comprises instructions executable by at least one processor to:
- receive a control signal including a demanded distance from a reference at which the demanded audio carried by the ultrasonic signals are demanded to be audible;
- and
- responsive to the demanded distance received in the control signal, establish an ultrasonic carrier frequency of the US speaker.
3 more elements
A method comprising:
- establishing a carrier frequency of sound emitted by at least one ultrasonic (US) speaker according to a demanded distance;
- and
- activating the US speaker to emit sound at the carrier frequency and according to a demanded azimuth and/or a demanded elevation.
A device comprising:
- at least one computer memory that is not a transitory signal and that comprises instructions executable by at least one processor to:
- responsive to a first demanded distance received in a control signal, establish a first ultrasonic carrier frequency of an ultrasonic (US) speaker;
- and
- responsive to a second demanded distance received in the control signal, establish a second ultrasonic carrier frequency of the US speaker, the first and second demanded distances not being equal to each other, the first and second ultrasonic carrier frequencies not being equal to each other.
1 more element
Dependencies are inferred from the claim text.