In this video, I used Adobe After Effects and the Trapcode plug-ins Sound Keys and Particular to generate particles, based on the music frequencies.
The spectrogram is divided into three frequency bands corresponding to low, mid and high frequencies. Each of these bands is linked to a particle emitter and the band’s amplitude controls the spread of the particle emission.
As observed in previous spectrogram-based visuals, beats related to low frequencies are easily recognized in the red emitter spread. However, I find it hard to accurately tell what the two other emitters are reacting to as it is a mix of harmonics from instruments and human voice.