Earphone equipped with directional sensor and 3D sound field restoration method thereof

Abstract

The invention provides an earphone equipped with a directional sensor and a 3D sound field restoration method thereof. The method comprises steps of: setting a parameter of a virtual 3D sound source in order to obtain a sound source signal; acquiring the physical positional information, relative to the virtual 3D sound source, of the earphone by acquiring the parameter information of the gyroscope, the acceleration meter, and the compass of the directional sensor group of the earphone in real time; according to the physical positional information, relative to the virtual 3D sound source, of the earphone and the radiation characteristic of the virtual 3D sound source, computing the direct sound function and the reverberant sound function of the virtual 3D sound source; computing the direct sound function and the reverberant sound function of the virtual 3D sound source and the binaural transfer function of the virtual 3D sound source; and performing convolution on the binaural transfer function of the virtual 3D sound source and the sound source signal of the virtual 3D sound source in order to obtain a reconstructed 3D sound field signal. The method may freely generate a 3D sound field in real time and satisfies experience needs of people for music scene feeling and a dynamic sound field.

Description

Technical field [0001] The invention relates to the technical field of electroacoustics, in particular to an earphone with an orientation sensor and a 3D sound field restoration method thereof. Background technique [0002] The traditional 3D sound field is the needs of the mixer through film and television works or music, adding a 3D sound field to allow people to passively appreciate the 3D sound field. This 3D sound field only takes into account the static state, that is, the situation where the human head is fixed, and lacks a dynamic 3D sound field. . But in reality, the sound that people hear is not static, but changes in real time as we move and the relative position of the sound source and the human ear changes. At the same time, the 3D sound source itself is also based on the user or The actual demand is constantly changing, which is what we call the "dynamic" 3D sound field restoration method. When people's demand for music liveness and dynamic sound field continues t...

AI Technical Summary

Problems solved by technology

[0002] The traditional 3D sound field is that the sound mixer adds a 3D sound field through the needs of film and television works or music, so that people can passively appreciate the 3D sound field. This 3D sound field only considers the static state, that is, the situation where the head is fixed, and lacks a dynamic 3D sound field.

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