Finite Volume Time Domain Simulations of Frequency-Dependent Boundary Conditions and Absorbing Layer

Pierre Chobeau, Sebastian Prepelita, Jukka Saarelma, Jonathan Botts, Lauri Savioja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionProfessional

Abstrakti

Accurate calculation of both early reflections and the reverberant field of an enclosed space requires accurate boundary modeling in terms of both spatial geometry and absorbing conditions. Within the framework of time-domain room acoustics simulations, the finite volume (FV) method allows to derive a scheme over unstructured grids, which is a feature of interest for the approximation of irregular boundaries. The frequency-dependence of FV boundaries has not been explored in detail yet beyond energy conservation. The present communication investigates both frequency-independent and frequency-dependent boundary conditions for the FV method comparing reflection coefficient magnitudes. The numerical results obtained for reflection coefficients are in agreement with the theory for a large span of angles and frequencies. In addition, an absorbing layer is proposed and compared to a matched absorbing boundary condition.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the 60th International Conference of the Audio Engineering Society
AlaotsikkoDREAMS (Dereverberation and Reverberation of Audio, Music, and Speech)
KustantajaAES
Sivumäärä8
TilaJulkaistu - 2016
OKM-julkaisutyyppiD3 Ammatillisen konferenssin julkaisusarja
TapahtumaAudio Engineering Society Convention - Leuven, Belgia
Kesto: 3 helmikuuta 20165 helmikuuta 2016
Konferenssinumero: 60

Conference

ConferenceAudio Engineering Society Convention
MaaBelgia
KaupunkiLeuven
Ajanjakso03/02/201605/02/2016

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  • Siteeraa tätä

    Chobeau, P., Prepelita, S., Saarelma, J., Botts, J., & Savioja, L. (2016). Finite Volume Time Domain Simulations of Frequency-Dependent Boundary Conditions and Absorbing Layer. teoksessa Proceedings of the 60th International Conference of the Audio Engineering Society : DREAMS (Dereverberation and Reverberation of Audio, Music, and Speech) [2-1] AES.