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Low-order modeling of head-related transfer functions using balanced model truncation

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4 Author(s)
Mackenzie, J. ; Dept. of Electron. & Electr. Eng., King''s Coll., London, UK ; Huopaniemi, Jyri ; Valimaki, V. ; Kale, I.

We propose a novel technique for the design of low-order infinite impulse response (IIR) filter models of head-related transfer functions (HRTFs) that uses balanced model truncation. We design tenth-order IIR filters, suitable for efficient real-time implementation, from preprocessed HRTF impulse responses that are of significantly superior quality to current IIR models derived with the Prony and Yule-Walker methods.

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Signal Processing Letters, IEEE  (Volume:4 ,  Issue: 2 )