The research on objective parameters dedicated to differentiate of impulsive noise events

One example of noise with increased annoyance, which is difficult to measure and quantify, is impulsive noise. Subjective perception, which in the case of impulsive sound is especially important, can be the additional metrological obstacle. The commonly used approach only imposes an arbitrary matching of measured signal to the patterns included in the ISO 1996-1, and then applying the fixed value of adjustment. However, there are no objective criteria to determine when a given sound is still impulsive, which leads to applying proper adjustment, and when this correction can no longer be made. The significance of the problem is reflected in the growing number of publications dealing with this subject. On the other hand, there is still no generally accepted methodology, which is indicated in the last draft version of ISO 1996-2 (2016). The paper deals with the problem of lack of objective algorithms for the classification of impulsive sounds in terms of applying appropriate value of adjustment and influence of such situation on the ambiguity of the annoyance assessment of such noise. The main focus of the work was on the development of distinctive characteristics of impulsive noise, especially highly impulsive noise, and on the assessment of the suitability of these parameters in the differentiation and objective classification of impulses in terms of annoyance to the environment.