We can easily perform FFT analysis of the noise which is generated from home appliances or the like by sound level meter.

After installing LA-0703 spectral monitor function (option) to the LA-7500, perform FFT analysis of the noise under measurement. The maximum of FFT analysis frequency is at 25kHz. The FFT analyzed data is stored in the SD card. By connecting the main unit of sound level meter to the PC via USB interface or inserting the SD card into the card slot of the PC, the stored data can be transferred without any exclusive software.

In addition, the direct sound can be recorded to the SD card by installing LA-0704 sound recording function (option) to the LA-7500. The recorded data can be replayed over speaker of PC with sound function and performed octave analysis by the DS-3000 series.