NOISE-CONTROL OF A MASTER HARMONIC-OSCILLATOR COUPLED TO A SET OF SATELLITE HARMONIC-OSCILLATORS

The overall gain is defined as the ratio of the stored energy in the i solated master harmonic oscillator to that in the coupled one. This ga in is composed of two distinct factors: The first factor, the external input power gain, relates to the ratio of the external input power in to the isolated master harmonic oscillator to that into the coupled on e. The second factor, the loss factor gain, relates to the ratio of th e loss factor of the coupled master harmonic oscillator to that of the isolated master harmonic oscillator. Both loss factors are in referen ce to the stored energy in the master harmonic oscillator only. It has been customary to assume the first factor to be unity and, thus the o verall gain and the loss factor gain have been assumed to be identical . It is argued here that often this assumption is not valid. Therefore , noise control measures that are based on this assumption may have be en wrongly evaluated. A few examples that illustrate the disparity bet ween the overall gain and the loss factor gain are cited in this paper . [S0001-4966(98)03111-7].