Acoustic noise suppression system, computer-implemented method therefor, computer program and non-volatile data carrier

The system synchronizes noise-cancelling signals with noise sources using signal relaying devices and a target device to accurately cancel undesired sounds at the target position, addressing synchronization issues in existing technologies.

WO2026109273A1PCT designated stage Publication Date: 2026-05-28ETHERON AB
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Patent Information

Application Number
PCT/EP2025/081332
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-19
Filing Date
2025-10-30
Publication Date
2026-05-28

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Abstract

Each device in a set of signal relaying devices (D1, D2, D3) acquires a respective instance (A1s, A2s, A3s) of an acoustic source signal (A) emitted from a noise pollution source (S), produces a respective feedforward signal (s1, s2, s3) comprising the respective instance (A1s, A2s, A3s) together with information designating a respective position (P1, P2, P3) of the device and time-stamp data (t1, t2, t3) to indicate when and where the respective instance (A1s, A2s, A3s) of the acoustic source signal (A) was acquired, and transmits this in a respective radio signal (R1, R2, R3). A target device (T) receives the respective radio signals (R1, R2, R3), and based thereon produces a cancelling signal (CSST) for an anti-noise signal (ANST) that suppresses the acoustic source signal (AT) after having propagated from the noise pollution source (S) to the target device (T). The cancelling signal (CSST) is produced based on the respective instances (A1s, A2s, A3s), the time-stamp data (t1, t2, t3), the information designating the respective positions (P1, P2, P3) of the devices and a target position (PT) of the target device (T).
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Citation Information

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