Abstract

In this paper, an algorithm to decompose Head-Related impulse response(HRIR) into the convolution of two factor responses is presented. By this Common Factor Decomposition (CFD) algorithm a group of HRIRs can share a common factor(CF) response while differ only in the other factor response which carries all directional information. The directional factor(DF) response is modeled as infinite impulse response (I-IR) filter in order to reduce storage. The CF is further represented as IIR filter using Balanced Model Truncation(BMT) algorithm to reduce the computation complexity. The proposed method is shown to be computation and storage efficient for virtual 3D sound synthesis.

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