用接收位置估计生成加权平均声学响应，提升厅堂音质均衡效果
Room impulse response prototyping using receiver distance estimations for high quality room equalisation algorithms
- 基于接收器距离估计构建多点分布的加权平均声脉冲响应原型
- 在模拟厅堂中测试，新方法在多个位置均实现更低的频谱偏差
- 适合需要高保真音效还原的音响系统设计与优化
厅堂均衡旨在改善混响环境中扬声器的重放质量，补偿由不理想反射和频率相关扬声器指向性引起的音色失真。该领域常用方法是反演一个原型声脉冲响应（RIR）。不同于仅在听音位置反演单一RIR，本文提出一种利用接收位置估计构造分布式多响应加权平均的原型方法。文中还描述了一种支持该原型构建的接收器距离估计技术。通过在模拟厅堂中测量多个位置的均衡后频谱偏差，将所提方法与其他方法进行对比，验证了其有效性。
原文摘要 · Abstract (English)
Room equalisation aims to increase the quality of loudspeaker reproduction in reverberant environments, compensating for colouration caused by imperfect room reflections and frequency dependant loudspeaker directivity. A common technique in the field of room equalisation, is to invert a prototype Room Impulse Response (RIR). Rather than inverting a single RIR at the listening position, a prototype response is composed of several responses distributed around the listening area. This paper proposes a method of impulse response prototyping, using estimated receiver positions, to form a weighted average prototype response. A method of receiver distance estimation is described, supporting the implementation of the prototype RIR. The proposed prototyping method is compared to other methods by measuring their post equalisation spectral deviation at several positions in a simulated room.
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