Gridding 3D sound field sampling method and system

Abstract

The invention relates to the technical field of sound field sampling and construction, in particular to a gridding 3D sound field sampling method. The method comprises the following steps: measuring and recording swept-frequency signal data of each measuring point corresponding to each sound source through a sound pickup so as to obtain pulse response data according to the swept-frequency signal data, and obtaining the pulse response data of each measuring point to any position between two adjacent sound sources through interpolation calculation. According to the method provided by the invention, the position selection of a virtual sound source in the sound source area is not limited; the sound source and the listening position in a music hall can be infinitely positioned and selected; when music is manufactured later or an on-site virtual sound field is reconstructed, the optimal recording and sound mixing position can be found by selecting the proper virtual sound source and sound listening position, for example, the musical instrument is slightly moved backwards on a stage to obtain better balance or be closer to obtain a clearer effect, and a music meeting similar to the scenecan be listened to in the environment of a virtual music hall.

Description

technical field [0001] The invention relates to the technical field of sound field sampling and construction, in particular to a gridded 3D sound field sampling method and system. Background technique [0002] The design of a concert hall is different from that of general buildings, and the acoustic effect is considered first. Every concert hall has its unique acoustic effects, such as the world-famous Berlin Philharmonic Hall, Vienna Concert Hall, Amsterdam Concert Hall, Boston Symphony Hall, etc., have attracted much attention because of their unique acoustic effects. [0003] In order to record and reproduce music in places such as concert halls, the prior art generally adopts a convolution sampling reverberation method or an algorithmic reverberation method. The sense of hearing with convolution reverb can be close to lifelike, but the sampling and sense of hearing are static. The sound field sampling technology in convolution reverberation is mainly based on the acqui...

AI Technical Summary

Problems solved by technology

Therefore, the data sampled and acquired by the prior art lacks separation, and the sense of 3D presence is lost when the sound field is reconstructed.

Although the algorithmic reverberation method can achieve higher quality, it often lacks realistic quality, especially in the T60 attenuation part dealing with complex and long reverberation spaces.

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