Paper Info
Title
Analysis of 2D sound reproduction with fixed-directivity loudspeakers
Abstract
The implementation of 3D sound reproduction is well founded theoretically, but the requirements for the number of loudspeakers and array geometry make it impractical using conventional technology. In practice, a 2D array of loudspeakers is commonly used which restricts the reproduction of sources to those in the horizontal plane and requires a restricted form for the free-field loudspeaker driving signals based on the sectorial spherical harmonics. However, reflections can impair reproduction quality when using the free-field solution. Since first-order loudspeakers are commercially available which increase the direct to reflected sound ratio, we extend the sectorial solution for the loudspeaker excitation signals to the first-order case. We also investigate the reproduction accuracy for both zeroth and first-order loudspeakers using numerical simulations.
Year
DOI
Venue
2012
10.1109/ICASSP.2012.6287895
Acoustics, Speech and Signal Processing
Keywords
Field
DocType
audio signal processing,geometry,loudspeakers,numerical analysis,2D sound reproduction analysis,3D sound reproduction,array geometry,first-order loudspeakers,fixed-directivity loudspeakers,free-field loudspeaker driving signals,loudspeaker 2D array,loudspeaker excitation signals,numerical simulations,reflected sound ratio,sectorial spherical harmonics,source reproduction,Ambisonics,Sound reproduction,spherical harmonics
Mathematical optimization,Directivity,Computer science,Ambisonics,Speech recognition,Harmonic analysis,Acoustics,Audio signal processing,Loudspeaker,Sound recording and reproduction,Horizontal plane,Directional sound
Conference
ISSN
ISBN
Citations 
1520-6149 E-ISBN : 978-1-4673-0044-5
978-1-4673-0044-5
0
PageRank 
References 
Authors
0.34
4
3
Name
Order
Citations
PageRank
Mark A. Poletti1204.46
Terence Betlehem200.34
Abhayapala, T.D.317425.09