| Title | Analysis of 2D sound reproduction with fixed-directivity loudspeakers |
| Publication Type | Conference Paper |
| Year of Publication | 2012 |
| Authors | Poletti, M.A., Betlehem T., and Abhayapala T.D. |
| Conference Name | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
| Date Published | 2012 |
| Keywords | 2D arrays, Ambisonics, Array geometries, Conventional technology, Driving signal, Excitation signals, First-order, Harmonic analysis, Horizontal planes, Loudspeakers, Reflected sounds, Signal processing, Sound reproduction, Spherical harmonics |
| 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. © 2012 IEEE. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84867602636&partnerID=40&md5=13b243162aa5fb12c4a5df6fd40ae875 |
| DOI | 10.1109/ICASSP.2012.6287895 |
