Active noise reduction method for portable fan, portable fan, electronic device and readable storage medium

By using an active noise reduction method, a noise reduction signal with opposite phase is generated using a pre-trained model, which solves the problem of high operating noise of portable fans and achieves effective noise reduction and optimization of complexity.

CN122447360APending Publication Date: 2026-07-24SHENZHEN JISU TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN JISU TECHNOLOGY CO LTD
Filing Date
2025-02-14
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Portable fans generate noise during operation, especially due to mechanical friction and airflow, and existing passive noise reduction methods have limited effectiveness.

Method used

An active noise reduction method is adopted. By acquiring the noise signal of the portable fan during operation, a pre-trained noise reduction model is used for noise control processing to generate noise reduction signals with opposite phase, frequency and amplitude, so as to achieve noise cancellation interference.

Benefits of technology

It effectively reduces the noise level of portable fans during operation, optimizes the noise reduction process, reduces the complexity and manpower cost of executing active noise reduction programs, and realizes dynamic analysis and real-time control of various noise signals.

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Abstract

The embodiment of the present application relates to the fan noise reduction technical field, and particularly discloses an active noise reduction method for a portable fan, which comprises: obtaining a noise signal; the noise signal is a dynamic comprehensive noise signal comprising air inlet noise, air outlet noise, fan blade noise and / or motor noise generated when the portable fan is running; noise control processing is carried out on the noise signal based on a pre-trained noise reduction model to obtain a noise control instruction; a noise reduction signal is sent based on the noise control instruction to carry out active noise control on the portable fan; wherein, within a preset error allowable range, the phase of the noise reduction signal and the noise signal is opposite, the frequency and amplitude are the same, and the noise signal is used for destructive interference. The present application dynamically analyzes the dynamic comprehensive noise signal generated inside and outside the cavity when the fan is running, and sends a corresponding noise reduction signal according to the dynamic comprehensive noise signal, so as to realize active noise control on the fan, thereby reducing the noise level when the fan is running.
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