Acoustics | Calculate | SPL

Creates a new Data Block of Sound Pressure Level (SPL) measurements from microphone Time waveforms, Fourier spectra or Auto spectra.  When this command is executed, the following dialog box will open.

Time Waveforms

If Time Responses is chosen as the Data Source, all of the open Data Blocks with time waveforms in them are listed in the dialog box.  SPL’s are calculated from time waveforms using spectrum averaging.

Fourier Spectra or Auto Spectra

If Fourier, Auto Spectra is chosen as the Data Source, all of the open Data Blocks with Fourier spectra or Auto spectra in them are listed in the dialog box. SPL spectra are calculated in the following ways,