Poletti, MarkBetlehem, TerenceAbhayapala, Thushara2015-12-10March 25-39781467300469http://hdl.handle.net/1885/68752The 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.Keywords: 2D arrays; Ambisonics; Array geometries; Conventional technology; Driving signal; Excitation signals; First-order; Horizontal planes; Reflected sounds; Spherical harmonics; Harmonic analysis; Signal processing; Sound reproduction; Loudspeakers Ambisonics; Sound reproduction; spherical harmonics201210.1109/ICASSP.2012.62878952016-02-24