Signal processing device, signal processing method, and signal processing program
The signal processing device addresses the challenge of non-stationary noise by dynamically selecting and applying comb filters to match changing noise pitches, achieving effective noise removal with minimal complexity and low cost.
WO2025220135A1PCT designated stage Publication Date: 2025-10-23MITSUBISHI ELECTRIC CORP +1
Patent Information
- Application Number
- PCT/JP2024/015179
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-10-23
Smart Images
Figure JP2024015179_23102025_PF_FP_ABST
Abstract
When an observation signal including noise the pitch of which changes with the passage of time has been received, a comb filter selection unit (21) selects, from a plurality of comb filters having different pitches to be removed, a comb filter having a pitch to be removed, which matches the pitch of noise, as a selected comb filter in response to the change of the pitch of the noise with the passage of time. A comb filter application unit (23) applies the selected comb filter to the observation signal to remove noise from the observation signal.
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Citation Information
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