System and method for noise cancellation in emergency response vehicles

EP3935625B1Active Publication Date: 2025-09-10WHELEN ENGINEERING COMPANY
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Patent Information

Application Number
EP2019713258
Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2019-03-07
Publication Date
2025-09-10
Estimated Expiration
2039-03-07

AI Technical Summary

Technical Problem

Long-term exposure to siren noise in emergency vehicles can cause severe medical issues for first responders, and existing noise cancellation systems are inadequate.

Method used

A system using a controller to determine the waveform of the siren noise at a first location and generate a second sound wave with the same amplitude and frequency but opposite phase to cancel out the siren noise at a second location, utilizing speakers and potentially microphones for detection, and incorporating vehicle layout scanning and artificial intelligence for precise waveform calculation.

Benefits of technology

Effectively reduces or cancels out siren noise within the vehicle cabin, improving the working conditions for emergency responders by minimizing noise-related health risks.

✦ Generated by Eureka AI based on patent content.

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Abstract

A system, method and storage medium for noise cancellation in a vehicle includes determining a waveform of a first sound wave at a first location, calculating another waveform of the first sound wave at a second location of an operator based on the waveform of the first sound wave at the first location and a first distance between the first location and the second location, generating at least one control signal based on the determined another waveform of the first sound wave at the second location, and generating a second sound wave based on the at least one control signal. A waveform of the second sound wave are formed to cancel out the first sound wave at the second location. The first sound wave is generated by a noise source.
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Citation Information

Patent Citations

  • Apparatus and method for noise control

    KR1020110010191A

  • Noise cancellation methodology for electronic devices

    US20050254664A1

  • Parametric emitter system with noise cancelation

    US20150104026A1