Voice reconstruction method based on millimeter-wave radar phase distance measurement

Abstract

The invention belongs to the field of voice reconstruction, and particularly relates to a voice reconstruction method based on millimeter-wave radar phase distance measurement. The method comprises the following steps of: S1, acquiring a high-resolution one-dimensional distance image sequence of a sound source target by using a discrete Fourier transform method; S2, conducting one-dimensional distance image sequence peak point detection based on a unit average constant false alarm detector; and S3, carrying out peak point phase information extraction and sound source audio information reconstruction. The beneficial effects of the invention are that: the method can achieve the high-quality voice information reconstruction, can actively detect a sound source target in a multi-sound-source environment through employing a millimeter-wave-frequency-band radar, precisely acquiring the one-dimensional distance image of the sound source target, detecting the phase information of a peak point,and then acquiring the vibration information of the sound source target, and accordingly reconstructing the audio information of the sound source target, thus effectively eliminating the interferenceof other sound sources.

Description

technical field [0001] The invention belongs to the field of voice reconstruction, in particular to a voice reconstruction method based on millimeter-wave radar phase ranging. Background technique [0002] In a real acoustic environment, the target voice is easily disturbed by human voices and background sounds. No matter in daily life or in the military field, there is an urgent need for a method of speech restoration under noise background. Speech reconstruction is to capture the speech content of interest through various sensors to restore the original speech signal to the greatest extent. [0003] At present, the commonly used sensors for picking up sound are various microphone arrays. The principle of the microphone is that the vibration of the sound is transmitted to the diaphragm of the microphone, and the magnet inside is pushed to form a changing current to realize the transformation from physical signal to electrical signal. However, the microphone array cannot s...

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Problems solved by technology

[0005] The problem to be solved by the present invention is that the traditional microphone array can only passively receive the superposition information of multiple sound sources at the array elements, and cannot separate the independent sound source information

[0006] The main idea of ​​the present invention is to propose a voice reconstruction method based on millimeter-wave radar phase ranging for the problem that the microphone array cannot separate multiple sound source information

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