用辅助声源改善扬声器在混响环境中的音色与空间感。
Room compensation for loudspeaker reproduction using a supporting source
- 通过延迟的辅助声源选择性添加能量，调节频段上的直达与混响比例。
- 感知评估显示可改变主扬声器听感，且听者未察觉辅助声源存在。
- 效果媲美商用算法，优于传统方法，兼顾音色与空间准确性。
房间补偿旨在提升混响环境中扬声器重放的准确性。传统方法仅关注频谱（音色）和时间准确性，忽略空间准确性。本文提出一种新方法，通过延迟的次级辅助声源，以频率选择性方式向感知混响场添加能量，从而调节不同频率下的直达-混响比，同时优化空间与频谱重放表现。该方法经感知评估验证，可在不被听者察觉的情况下改变主扬声器的听感。结果表明，其性能可与成熟商业房间补偿算法相当，并在多项指标上优于传统方法。
原文摘要 · Abstract (English)
Room compensation aims to improve the accuracy of loudspeaker reproduction in reverberant environments. Traditional methods, however, are limited to improving only spectral (timbral) and temporal accuracy, neglecting the spatial accuracy of loudspeaker reproduction. Proposed is a method that compensates for both spectral and spatial properties of loudspeaker reproduction, by adding energy to the perceived reverberant sound field in a frequency-selective manner using a delayed secondary supporting source. This approach allows for the modification of the direct to reverberant ratio as a function of frequency, altering spatial and spectral reproduction. The proposed method is perceptually evaluated, demonstrating its ability to alter the perception of a primary loudspeaker without the listener perceiving the supporting source. The results show that the proposed method performs comparably to a well-established commercial room compensation algorithm and has several advantages over traditional room compensation methods.
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