A sound source orientation method and device and a computer readable storage medium

Abstract

The invention provides a sound source orientation method. The sound source orientation method comprises the steps of obtaining a plurality of sound input signals; calculating an accumulated sound signal of the plurality of sound input signals in each preset direction in the plurality of preset directions; filtering the accumulated sound signal calculated in each preset direction to obtain a filtered sound signal in each preset direction; calculating the ratio of the energy of the filtered sound signal in each preset direction to the energy of the accumulated sound signal before filtering in the preset direction; and determining the preset direction corresponding to the maximum ratio as the sound source direction of the sound input signal. According to the method, for each preset direction,the ratio is calculated according to the energy of the same accumulated sound signal before and after filtering, so that noise interference is avoided; due to the fact that the filter with the presetpass band is adopted, the sound source direction of specific sound can be judged. The invention also provides a corresponding sound source orientation device and a computer readable storage medium.

Description

technical field [0001] The invention belongs to the field of sound source orientation, and in particular relates to a sound source orientation method and device and a computer-readable storage medium for determining the sound source direction of a target sound, for example, for determining the sound source direction of a human voice. Background technique [0002] Most of the current sound orientation systems are based on microphone arrays to complete sound source orientation. A microphone array is a cluster of microphones, including a plurality of microphones, which can be used to sample and process sounds in a space, so as to determine the relative direction characteristics of sound sources in the space for sampling and processing. In a microphone array, a "delay-and-sum" technique is usually used to process the sound signals collected by each microphone. That is, for each preset sound source direction, relative to the reference microphone in the microphone array, the soun...

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Problems solved by technology

[0005] Aiming at the problems mentioned above that the direction of the noise may be mistakenly judged as the direction of the target sound source and the direction of the non-human voice as the direction of the human voice, a sound source orientation method and device are proposed, which can avoid noise interference and have strong environmental adaptability , and can selectively direct the sound source of specific sounds such as human voices, and further eliminate the interference of other non-human voice signals, and the implementation is simple, does not involve frequency domain calculations, low power consumption, and flexible configuration

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