Path compensation function determination method and device and active noise reduction method and device

Abstract

The invention provides a path compensation function determination method, which is applied to an active noise reduction scene comprising a target noise reduction area moving relative to a monitoring microphone and a loudspeaker, and comprises the following steps: acquiring a path compensation function based on a pressure signal set acquired by a pressure sensor array arranged in a moving range of the target noise reduction area, target noise reduction area position information corresponding to the target noise reduction area is determined; determining a first path compensation function based on monitoring microphone position information corresponding to the monitoring microphone and the target noise reduction area position information; and determining a second path compensation function based on loudspeaker position information corresponding to the loudspeaker and the position information of the target noise reduction area. Through the pressure signal set collected by the pressure sensor array in real time, the purpose of obtaining the position information of the target noise reduction area in real time so as to determine the path compensation function in real time is achieved, a basis can be provided for determining the noise reduction signal for the target noise reduction area in real time, and therefore noise of the target noise reduction area is minimized.

Description

technical field [0001] The present application relates to the technical field of active noise reduction, in particular to a method and device for determining a path compensation function, an active noise reduction method and device, electronic equipment, and a computer-readable storage medium. Background technique [0002] In the feedback active noise reduction system, the transfer function of the secondary path needs to be determined in advance to design the noise reduction parameters of the feedback noise reduction filter to denoise the target noise reduction area. [0003] However, for noise field scenes, such as car cabin scenes, the target noise reduction area usually moves relative to the feedback active noise reduction system. The target noise reduction area and each electroacoustic path are unknown and not fixed, and it is impossible to track the target noise reduction area in real time Noise areas are adapted to them for targeted optimal noise reduction. Contents ...

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Problems solved by technology

[0003] However, for noise field scenes, such as car cabin scenes, the target noise reduction area usually moves relative to the feedback active noise reduction system. The target noise reduction area and each electroacoustic path are unknown and not fixed, and it is impossible to track the target noise reduction area in real time noise areas and thus adapt targeted optimal noise reduction to them

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