The invention relates to an active noise reduction method and device, equipment and a storage medium, the method is applied to heat dissipation equipment, and the method comprises the steps that in response to the fact that a fan is detected to be in a starting state, a first sound signal collected based on a reference microphone and a second sound signal collected based on an error microphone are obtained; a predicted sound signal is determined based on the second sound signal and a predetermined acoustic transmission path, the acoustic transmission path is a frequency domain acoustic transmission path from the error microphone to a set position outside the air outlet, and the predicted sound signal is a sound signal predicted for the set position; determining a noise reduction signal based on the first acoustic signal and the predicted sound signal, wherein the noise reduction signal is a sound signal opposite to the noise phase of the fan; and playing the noise reduction signal through the first loudspeaker. According to the invention, the noise reduction range of the equipment can be expanded, so that the noise reduction effect in a wider range is ensured.
本公开是关于一种主动降噪方法、装置、设备及存储介质,该方法应用于散热设备,所述方法包括:响应于检测到所述风扇处于启动状态,获取基于所述参考麦克风采集的第一声音信号以及基于所述误差麦克风采集的第二声音信号;基于所述第二声音信号以及预先确定的声学传递路径确定预测声音信号,所述声学传递路径为所述误差麦克风到所述出风口外的设定位置的频域声学传递路径,所述预测声音信号为针对所述设定位置预测的声音信号;基于所述第一声学信号和所述预测声音信号确定降噪信号,所述降噪信号为与所述风扇的噪声相位相反的声音信号;通过所述第一扬声器播放所述降噪信号。本公开可提升设备的降噪范围,进而确保更广范围内的降噪效果。
Active noise reduction method and device, equipment and storage medium
主动降噪方法、装置、设备及存储介质
2023-05-02
Patent
Electronic Resource
Chinese
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