Low frequency noise and infrasound: A new method to determine the specific sound from the total sound; a plausible statistical algorithm for use in Legal Noise Assessment

All impacts of noise are presented within a complex acoustic environment, sometimes from a single source (e.g., a sole piece of equipment or an industrial site) or from multiple sources. It is well known that any sound measurement - whether indoors or out –is registered by SLM and usually identified as the total sound. The issue here is that there is not always a simple way to distinguish a specific sound from the total sound, and it is impossible to conduct an fft analysis and "eliminate" its spectrum in the signal recorded at the receiver position. In this work, the author proposes a new method of employing statistical tools. Applying this concept of eliminating unwanted sound levels (low frequencies from traffic noise or infrasound of the environment) will be the technique used to evaluate noise under ISO 1996 standards, the accepted procedure for legal evaluations