Results 61 to 70 of about 334,564 (72)

Evaluation of ambisonics decoding methods with experimental measurements

Ambisonics is a sound reproduction technique based on the decomposition of the sound field using spherical harmonics. The truncation in the number of coefficients used to recreate the sound field leads to reproduction artifacts which depend on the ...
Fazi, Filippo Maria, Shin, Mincheol, Murillo Gomez, Diego M.   +2 more
core   +1 more source

Spherical Light Integration over Spherical Caps via Spherical Harmonics

, 2020
International audienceSpherical area light sources are widely used in synthetic rendering. However, traditional Monte Carlo methods can require an excessive number of samples for sufficient accuracy.
Li-Yi Wei, Zhou, Zihong, Zihong Zhou, Wei, Li-Yi   +3 more
core   +1 more source

Hole Size in a Spherical Resonator

International Scholastic Journal of Science, 2012
When air is blown strongly through a straw and across a hole in a hollow sphere, a high-pitched whistling sound is heard. This paper tests two models, Helmholtz Resonance and Spherical Harmonics, to determine which most ...
Jared Kearns
doaj  

Approximation on the sphere by weighted Fourier expansions

Journal of Applied Mathematics, 2005
The main theme of this paper is the approximation on the sphere by weighted sums of spherical harmonics. We give necessary and sufficient conditions on the weights for convergence in both the continuous and the LP cases.
V. A. Menegatto, A. C. Piantella
doaj   +1 more source

Spherical harmonics descriptor for 2D-image retrieval

, 2005
In this paper, spherical harmonics are proposed as shape descriptors for 2D images. We introduce the concept of connectivity; 2D images are decomposed using connectivity, which is followed by 3D model construction. Spherical harmonics are obtained for 3D
Atul Sajjanhar (13059588), D Zhang (660807), G Lu (7647290)   +2 more
core  

The Addition Theorem for Spherical Harmonics and Monopole Harmonics

, 2006
The addition theorem for spherical harmonics and monopole harmonics is studied in a unified approach.
Fung, M.K.
core  

Gravity, Electrostatic and Thermal Fields of Slightly Flattened Triaxial Ellipsoidal Conductors via Spherical Harmonic Expansions with Irrational Polar Distance Powers

Mathematics
We present gravitational, electrostatic and thermal field intensities as series of spherical harmonics with the polar distance raised to irrational powers.
Gerassimos Manoussakis, George Fragoyiannis, Panayiotis Vafeas   +2 more
doaj   +1 more source

Inversion Formulas for the Spherical Radon-Dunkl Transform

Symmetry, Integrability and Geometry: Methods and Applications, 2009
The spherical Radon-Dunkl transform R_κ, associated to weight functions invariant under a finite reflection group, is introduced, and some elementary properties are obtained in terms of h-harmonics.
Zhongkai Li, Futao Song
doaj   +1 more source

Comparative Studies on the Radiative Heat Transfer in Arc Plasma and Its Impact in a Model of a Free-Burning Arc

Plasma
The radiative heat transfer in arc plasma models is considered from the point of view of its description in terms of a net emission coefficient, the method of spherical harmonics in its lowest order, and the discrete ordinate method.
Margarita Baeva, Yann Cressault, Petr Kloc   +2 more
doaj   +1 more source

A Digital Technique for Online Identification and Tracking of Power System Harmonics Based on Real Coded Genetic Algorithm

, 2006
Current and voltage waveforms of a distribution or a transmission system are not pure sinusoids. There are distortions in these waveforms that consist of a combination of the fundamental frequency, harmonics and high frequency transients.
Zamanan, N., Sykulski, J.K., Al-Othman, A.K.   +2 more
core   +1 more source