Room impulse response prototyping using receiver distance estimations for high quality room equalisation algorithms

James Brooks-Park, Martin Bo Møller, Jan Østergaard, Søren Bech, Steven van de Par
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Abstract

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.
利用接收器距离估算室内脉冲响应原型,实现高质量室内均衡算法
室内均衡的目的是提高扬声器在混响环境中的再现质量,补偿因不完美的室内反射和扬声器的频率指向性而产生的色彩。房间均衡领域的一种常用技术是反转房间脉冲响应(RIR)原型。原型响应由分布在聆听区域周围的多个响应组成,而不是在聆听位置反转单一的 RIR。本文提出了一种脉冲响应原型方法,利用估计的接收机位置,形成加权平均原型响应。本文描述了一种接收机距离估计方法,支持原型 RIR 的实现。通过测量模拟房间中几个位置的均衡后频谱偏差,将所提出的原型方法与其他方法进行比较。
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