For specific case of pulse recording, with 0.5ms pulse duration with 1s period between pulses, I want to know associated SPL. I can apply same signal processing :
- Apply the window to your signal
- Calculate the DFT of your signal
- Scale the DFT properly (half of spectra and coherent gain)
- Convert the result to decibel scale with a reference acoustic pressure of 2⋅10−5Pa
For step 1, from this article for signals > 50ms it is quite easy to find a valid window which will resolve low frequencies. But when we are interested by the 0.5ms pulse SPL, which are the signal processing step to apply to have a meaningful SPL value?