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US 2019/0311706 A1Published application
Adaptive noise cancellation for mobile radiography system
OwnerScott T. MACLAUGHLINinventor
Life of this patent
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Abstract
A mobile x-ray system having an x-ray source and an electronic control system for firing of the x-ray source includes a sound cancellation system. A microphone is used to detect incoming sound waves and a speaker is used to emit a canceling audio signal to defeat the detected incoming sound waves. The canceling audio signal destructively interferes with the incoming sound waves to attenuate or cancel at least portion of the detected incoming sound waves.
Claims14
A mobile digital radiography system comprising:
- an x-ray head comprising an x-ray source;
- an electronic control system configured to communicate with the x-ray head for controlling firing of the x-ray source;
- a control interface for an operator to selectively operate the electronic control system;
- and
- a sound cancellation system including a microphone, a speaker, an interface screen, and a plurality of user selectable frequency ranges presented on the interface screen to a user of the mobile digital radiography system, the sound cancellation system configured to detect characteristics of incoming sound waves using the microphone and to generate an outgoing audio interference signal emitted over the speaker in the one or more of the frequency ranges selected by the user in response thereto,
- wherein the outgoing audio interference signal comprises destructive audio properties in the one or more of the frequency ranges selected by the user with respect to the incoming sound waves, and wherein at least portions of the outgoing audio interference signal emitted over the speaker attenuate at least portions of the incoming sound waves in the one or more of the frequency ranges selected by the user using destructive interference.
3 more elements
A method comprising:
- providing a mobile radiography system having a wheeled transport frame, a microphone, a speaker, and an interface screen, each electrically connected to a processor;
- detecting incoming sound waves using the microphone and the processor electrically connected thereto;
- presenting a plurality of frequency ranges on the interface screen for selection by an operator;
- generating a cancelling audio signal, in one or more of the frequency ranges as selected by the operator, using the processor;
- and
- emitting the generated cancelling audio signal, in the one or more frequency ranges as selected by the operator, using the speaker,
- wherein at least portions of the cancelling audio signal comprise a predetermined phase shift relative to a phase of the detected incoming sound waves.
4 more elements
Dependencies are inferred from the claim text.