基于球麦克风阵列的高阶声场记录与重放在电影音频制作中的应用  

Higher order sound field recording and reproduction based on spherical microphone array for film audio production

作　　者：曲天书[1,2,3] 吴玺宏 QU Tianshu;WU Xihong(School of Intelligence Science and Technology,Peking University;Speech and Hearing Research Center,Peking University;State Key Laboratory of General Artificial Intelligence)

机构地区：[1]北京大学智能学院,北京100871 [2]北京大学言语听觉研究中心,北京100871 [3]跨媒体通用人工智能全国重点实验室,北京100871

出　　处：《现代电影技术》2025年第2期4-11,共8页Advanced Motion Picture Technology

基　　金：国家重点研发计划“虚实融合移动终端的高精度三维光声同步呈现”(2024YFB2808902)。

摘　　要：随着电影对极致沉浸式视听体验的发展需求,沉浸式声场记录和重放技术日显重要。本文围绕电影音频制作技术中的声场记录和重放问题,介绍了基于球麦克风阵列的高阶高保真立体声(Higher Order Ambisonics,HOA)分析技术,并针对球麦克风阵列球谐分解中的低频噪声与高频混叠问题,以及双耳重放技术中的阶数受限问题,给出了相应解决方案,研究表明所提方案可为观众提供更真实、更具沉浸感的声场重放效果,提升了观影体验,在电影音频制作中具有广阔的应用前景。With the demand for development of ultra immersive audiovisual experiences in film,immersive sound field recording and reproduction technologies have become increasingly important.This paper focuses on the issues of sound field recording and reproduction in film audio production technology.It introduces the higher order ambisonics(HOA)analysis technology based on spherical microphone arrays.Solutions are provided for the problems of lowfrequency noise and highfrequency aliasing in spherical harmonic decomposition of spherical microphone arrays,as well as the order limitation in binaural reproduction technology.Research shows that the solutions can provide audiences with more realistic and immersive sound field reproduction effects,enhancing the cinema experience and having broad application prospects in film audio production.

关 键 词：虚拟现实 球麦克风阵列 高阶高保真立体声(HOA)技术 双耳重放 球谐分解 

分 类 号：J915[艺术—电影电视艺术] TP37[自动化与计算机技术—计算机系统结构]