Fig. 5From: Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processingWaveforms resulting from the analysis presented as a spectrogram in Fig. 1. In the process of converting the waveform from an infrasound signal sampled at 20 Hz into a file readable by the software, the amplitude was normalized. For this plot the output of Izotope RX noise processing was resampled back to 20 HzBack to article page