http://www.cnr.it/ontology/cnr/individuo/prodotto/ID245656
New developments of the \"sound particle\" concept in room acoustics (Abstract/Comunicazione in rivista)
- Type
- Label
- New developments of the \"sound particle\" concept in room acoustics (Abstract/Comunicazione in rivista) (literal)
- Anno
- 1995-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1121/1.414276 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Domenico Stanzial (1) and Nicola Prodi (2) (literal)
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- PACS: 43.55.Br
Room acoustics: theory and experiment; reverberation, normal modes, diffusion, transient and steady-state response (literal)
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- http://asadl.org/jasa/resource/1/jasman/v98/i5/p2899_s2 (literal)
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- Note
- Comunicazione (literal)
- Google Scholar (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) Natl. Res. Council of Italy, Cemoter Acoust. Dept., via Canal Bianco, 28, I-44044 Cassana, Ferrara, Italy
(2) CIARM c/o Cemoter, Ferrara, Italy (literal)
- Titolo
- New developments of the \"sound particle\" concept in room acoustics (literal)
- Abstract
- The concept of a sound particle, which is a small amount of acoustic energy that is supposed to move inside the sound field, has been used for a long time in room acoustics, principally in connection with the statistical interpretation of the reverberation theory and more recently with the ray-tracing-based computer simulations. New research on energetic properties of acoustic fields [G. Schiffrer and D. Stanzial, ''Energetic Properties of Acoustic Fields,'' J. Acoust. Soc. Am. 96, 3645-3653 (1994)] leads to the possibility of rigorously defining, by means of the energy transfer velocity, the trajectories of sound particles. Furthermore, the general decomposition of the air-particle velocity v into one part vp, which has the same time dependence as the acoustic pressure p, and the other one vq=v-vp such that ?pvq?=0, allows one to define two separate kinds of sound particle trajectories. These different behaviors are connected, respectively, to the instantaneous active and reactive acoustic intensities. A brief summary of the theoretical framework and some visualizations of sound particle trajectories for simple model fields will be presented. (literal)
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