arXiv:2510.10883eess.ASphysics.app-ph2025-10

通过感知补偿提升房间内播放的全景声质量,让听感更真实。

Perceptual Compensation of Ambisonics Recordings for Reproduction in Room

  • 基于感知模型在球谐域对直达声与混响分量进行频谱与空间补偿
  • 在真实房间中听感接近理想消音室效果,优于传统全景声
  • 支持灵活声道数,对头部转动和位置偏移鲁棒,适合沉浸式音频应用

全景声是一种精确捕获与渲染声场的方法,假设播放房间的声学特性对声场影响可忽略。但在实际中,房间声学会导致音质明显下降。本文提出一种基于全景声的录音与渲染方法,采用感知驱动策略补偿播放房间的混响效应。在球谐函数(SHs)域中,对记录的直达声与混响声成分进行频谱与空间补偿,以保留关键听觉线索,包括直达声方向、直达与混响成分的频谱能量分布,以及各听觉频带的双耳相干性(IC)。相比传统全景声,该方法可使用任意数量的全景声声道进行音频渲染。听觉测试表明,所提方法能实现原声场的感知准确再现,在真实房间中的表现优于未经补偿的传统全景声,甚至超过模拟消音室中的理想全景声渲染效果。此外,位于扬声器阵列中心的听众主观评估显示,该方法对头部转动和微小位置偏移具有较强鲁棒性。

原文摘要 · Abstract (English)

Ambisonics is a method for capturing and rendering a sound field accurately, assuming that the acoustics of the playback room does not significantly influence the sound field. However, in practice, the acoustics of the playback room may lead to a noticeable degradation in sound quality. We propose a recording and rendering method based on Ambisonics that utilizes a perceptually-motivated approach to compensate for the reverberation of the playback room. The recorded direct and reverberant sound field components in the spherical harmonics (SHs) domain are spectrally and spatially compensated to preserve the relevant auditory cues including the direction of arrival of the direct sound, the spectral energy of the direct and reverberant sound components, and the Interaural Coherence (IC) across each auditory band. In contrast to the conventional Ambisonics, a flexible number of Ambisonics channels can be used for audio rendering. Listening test results show that the proposed method provides a perceptually accurate rendering of the originally recorded sound field, outperforming both conventional Ambisonics without compensation and even ideal Ambisonics rendering in a simulated anechoic room. Additionally, subjective evaluations of listeners seated at the center of the loudspeaker array demonstrate that the method remains robust to head rotation and minor displacements.

全景声音频渲染感知补偿混响抑制

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