When you have to think about the setting of sound insulating wall or partition with absorptive material in order to cut off the noise from machine etc. in a factory, you need to study the frequency distribution of sound characteristics and choose the suitable and effective material for blocking out the noise according to its frequency characteristics.

The LA-7500 precision wide-range sound level meter with LA-0702 1/3 real-time octave analysis function can analyze the sound level in a wide range of frequency from 20 Hz to 20 kHz.

The effectiveness of blocking out the noise can be checked by comparing the data difference of before and after the soundproofing.