METHOD OF MODIFYING THE FREQUENCY RESPONSE OF A WOODEN ARTICLE

摘要

A method for modifying the frequency response of a wooden article by exciting the article with acoustic energy. Frequency response is the measure of a system's spectrum response at the output to a signal of varying frequency but constant amplitude at its input. The acoustic energy includes at least one excitation frequency which is preferably in the audible spectrum (20 to 20,000Hz). The use of acoustic energy from the remote source provides non-contact excitation of the wooden article. In one embodiment, the acoustic energy is at least one sound wave that includes at least one resonant frequency of the wooden article, at least one acoustic mode of the wooden article, at least one discrete broadband frequency, and a composite frequency including any combination of multiple broadband frequencies, white noise and pink noise.