spectrogram

Experts told BBC Verify they used sound waveforms and spectrograms to measure the distance of the gunfire from the microphone of the mobile.

The collected EEG and audio signals were transformed into spectrograms, allowing the data to be visualised.

One of the goals of the research team was to find a way to extract the concert's tremor signals from spectrograms.

Regarding the database of bird sounds, the AI works by turning the recording into a spectrogram or data waveform which it then tries to match against those already on file.

These spectrograms are then converted back into audio to train bird sound identifiers.