A METHOD AND APPARATUS FOR CALCULATION SOURCE LEVEL OF TRANSIENT NOISE THROUGH UNDERWATER AND STRUCTURE-BORNE BY FREQUENCY BAND

摘要

The present invention provides a method for calculating a sound source level for instantaneous noise for each frequency band, the method comprising: performing low frequency band filtering on an instantaneous noise signal measured by a sensor using a low frequency filter; Designing an exponential weight function for calculating an effective value of an aperiodic impulsive signal; Performing convolution by using the low frequency band filtering signal and the exponential weight function; After performing the convolution, performing multi-band filtering on the obtained data to obtain a plurality of band-specific data; Calculating an effective value for a plurality of noise signals for each band; Obtaining a peak value for each band from the calculated effective value; And compensating for the peak value of each band by using a parameter.