Cleaning EVPs

How to Clean Your EVPs Using a Computer

This help sheet is set up for using sound editing software and most sound editing software will follow the same steps closely. Please always save a copy of the original sound file before you start working on any changes. These settings and adjustments are from experimentation, consultation with sound engineers and other paranormal investigators. I cannot claim that this will always be the process, but based on mine and others' experience will do the most for evps.

1. Amplify the clip: Select Amplitude> Amplify> Presets Window> 10db Boost> OK

2. Eliminate High End Hiss: Select Effects> Filters> Scientific Filters> Presets Window> Hiss Cut (Above 10 kHz)> OK

3. Amplify again, if needed (follow step 1)

4. Enhance the quality of the clip: Select Effects> Noise Reduction> Hiss Reduction> Presets Window> Light Hiss Reduction> Get Noise Floor> OK

5. Amplify again, if needed (follow step 1)

6. Re-enhance the quality of the clip again: Select Effects> Noise Reduction> Noise Reduction> Get Profile From Selection> Move Noise Reduction Level slider to 15> OK (using this last option may make the clip sound robotic, therefore, if you don’t like the way it sounds, just select the Undo option).

Noted ABOVE are the basics that we use, without fail, to clean-up our EVPs.
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Noted BELOW are features that can be used in addition to what is noted above - Experiment with all the features.
Don’t use them all at one time, interchange between a combination to enhance and extract EVP captures.

Select Filters> FFT Filter> Presets Window> Kill The SubHarmonics> OK
Select Filters> FFT Filter> Presets Window> Kill The Mic Rumble> OK
Select Filters> FFT Filter> Presets Window> On Hold 400-4k> OK
Select Filters> FFT Filter> Presets Window> On Hold EQ> OK
Select Filters> FFT Filter> Presets Window> Telephone Receiver> OK
Select Filters> FFT Filter> Presets Window> Telephone Voicemail> OK
Select Filters> FFT Filter> Presets Window> Underwater (Shallow)> OK

Select Filters> Graphic Equalizer> Presets Window> Vocal Presence (Boost)> OK
Select Filters> Graphic Equalizer> Presets Window> SpitClear> OK
Select Filters> Graphic Equalizer> Presets Window> Quick High Pass> OK
Select Filters> Graphic Equalizer> Presets Window> TinnyNBrittle> OK

Select Filters> Parametric Equalizer> Presets Window> 250 Hz Cut With Low End Shelf
Select Filters> Parametric Equalizer> Presets Window> Hum and Hiss Removal