Sound source positioning method and system, electronic equipment and storage medium
A technology of sound source localization and algorithm, which is applied in the field of signal processing, can solve problems such as large amount of computation, decreased practicability, and reduced algorithm practicability, so as to achieve the effect of improving performance and increasing proportion
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Embodiment 1
[0052] This embodiment provides a sound source localization method, such as figure 1 shown, including:
[0053] Step S101. Divide the speech signal received by the reference microphone into at least one frequency sub-band; wherein the reference microphone is one of the microphones in the microphone array.
[0054] In an optional implementation manner, the microphone closest to the sound source in the microphone array is selected as the reference microphone. In this embodiment, since the reference microphone is closest to the sound source, the quality of the speech signal received by it is better than that of other microphones in the microphone array. Therefore, speech detection and sound source detection are performed based on the speech signal with better quality. The positioning result is more accurate.
[0055] In a specific implementation, the speech signal received by the reference microphone is subjected to windowing and frame division processing, and each frame of the...
Embodiment 2
[0089] This embodiment provides a sound source localization system 400, such as Figure 4 As shown, it includes a frequency band division module 401 , a speech detection module 402 and a sound source localization module 403 .
[0090] The frequency band division module is used to divide the speech signal received by the reference microphone into at least one sub-frequency band; wherein the reference microphone is one of the microphones in the microphone array.
[0091] The voice detection module is used to calculate the voice presence probability for each sub-band according to the likelihood ratio of voice relative to noise obtained in the VAD detection process in the case of detecting whether there is voice in the voice signal through VAD.
[0092] The sound source localization module is used to calculate the maximum controllable response power of the microphone array by using the SRP-PHAT algorithm weighted based on the frequency-divided voice presence probability, and deter...
Embodiment 3
[0105] Figure 5 A schematic structural diagram of an electronic device provided in this embodiment. The electronic device includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor implements the sound source localization method of Embodiment 1 when executing the program. Figure 5 The electronic device 3 shown is only an example, and should not impose any limitation on the functions and application scope of the embodiments of the present invention.
[0106] The electronic device 3 may be in the form of a general computing device, eg it may be a server device. Components of the electronic device 3 may include but not limited to: the at least one processor 4 mentioned above, the at least one memory 5 mentioned above, and the bus 6 connecting different system components (including the memory 5 and the processor 4 ).
[0107] The bus 6 includes a data bus, an address bus and a control bus.
[0108] The memory 5...
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