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

Abstract

The invention provides a sound source orientation method. The 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, and setting a directional judgment parameter for each accumulated sound signal to judge whether the preset direction corresponding to the accumulated sound signal is the sound source direction of the sound input signal or not; calculating the intensity characteristic value of the accumulated sound signal in each preset direction; comparing the intensity characteristic values of all the accumulated sound signals, and updating the values of the directional judgment parameters of all the accumulated sound signals according to the comparison result; and judging that the preset direction corresponding to one of the accumulated sound signals is the sound source direction of the sound input signal according to the value of the directional judgment parameter of each accumulated sound signal. In the method, the directional judgment parameter carries historical intensity information of the accumulated sound signal,so that sound source direction judgment only according to the current intensity of the sound signal is avoided. 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...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned possible erroneous determination of the direction of noise as the direction of the target sound source, the direction of non-human voices as the direction of human voices, and the determination of other louder-intensity sounds in the same or similar frequency range as the target detection sound For the problem of sound source direction, a sound source directional method and device are proposed, wherein the directional judgment parameter is updated in real time to increase or decrease during each sound source direction judgment process, so that the directional judgment parameter has the history of the corresponding accumulated sound signal Intensity information avoids the disadvantage of judging the direction of the sound source only based on the current strength information of the sound signal in the prior art, and provides a buffer mechanism for the judgment of the direction of the sound source, thus avoiding the influence of other sudden sounds on the judgment of the direction of the sound source, so that it can avoid Noise interference, strong environmental adaptability, and the ability to selectively orient specific sounds such as human voices to further eliminate interference from other non-human voice signals, and to avoid the same or similar frequency range as the target detection sound Interference with other high-intensity sounds, and the implementation is simple, does not involve frequency domain calculations, low power consumption, and flexible configuration

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