It is well known that dBA measurements don’t are the best tool to evaluate an alleged noise/vibration disturbance, mainly when impacted dwellings are in a mixed acoustical zones. The results of the measurements, made in Peru inside and outside dwellings subjected to structural vibrations, are presented here. The issue is that there is not always a simple way to distinguish a specific sound from the total sound, and methods recommended in the ISO 1996-2 Standard are very general. An empirical criterion had to be created to find the level of specific sound contained within the total sound. These acoustic determinations consist of removing the outlier values from a time-history filtering of the total sound. In this work, the author proposes a new method of employing statistical tools, adapting Pearson's criterion, using discrete mathematics, inference, and acoustics criteria in order to develop a computer program to remove spurious noise with not complex algorithms. The purpose of this Paper is to share to the acoustician community that it is plausible to achieve a standardized method, in the sense that an algorithm could be agreed among specialists for having an “universal computer program” to determine the specific sound contained in the total sound.