2015•The Journal of the Acoustical Society of AmericaRequires access
Nonlinear interaction of monochromatic wave with noise
Desen Yang, Qing Liu, Shengguo Shi, Jie Shi, Bo Hu
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Abstract
The nonlinear interaction of monochromatic wave with noise is studied theoretically, and that is based on the theory of O. V. Rudenko about interactions of intense noise waves and the theory of G. H. Du about nonlinear interaction of finite amplitude irregular waves. The effect on shifting of noise energy by the intensity and frequency of monochromatic wave is discussed during the propagation of the monochromatic wave and noise. Some numerical simulations about this process are conducted under different initial conditions to investigate the changes of their spectrum. The agreement between theoretical analysis and numerical simulation demonstrates that under some conditions the noise can be modulated and the noise spectrum becomes flatter and broader with the increasing distance.