A method for the simulation of the nonlinear propagation of an acoustic wave, in particular by a resonator

摘要

The invention relates to a process for the simulation of nonlinear the propagation of an acoustic wave in a waveguide or a résonateur.le waveguide or the resonator is broken down (have) in the sections (s i) in the direction of propagation, the propagation being linear (b) between successive sections (s i, j + 1 ). The field of the acoustic wave is broken down (c) in the direct wave and reverse wave. Each sample of the acoustic wave entering a section (s i, j) is associated (d) a speed of propagation non-linear. A relationship of the temporal order is applied (e) to each sample on the path of propagation of each section (s i ). At the end of section (s i, j) and of the waveguide, or of the resonator, is calculated (f) a sequence of samples, taking account of the sampling period at the input of the résonateur.application to the production of musical instruments, acoustic synthesis, simulation.