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January 1, 2004The International Journal of Acoustics and VibrationOpen Access

Order and Realisability of Impulse Response Filters for Accurate Identification of Acoustical Multi-ports from Transient CFD

Wolfgang Polifke Alexander Gentemann

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Abstract

Time step of CFD calculation f Riemann invariant for downstream travelling wave, also frequency (Hz) g Riemann invariant for upstream travelling wave h Unit impulse response vector (UIR) Approximation of UIR (Vector).h k Wave number .

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Polifke et al. (2004) studied this question.

synapsesocial.com/papers/6aa271fe74fc654bd0323270 https://doi.org/10.20855/ijav.2004.9.3163

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