What does the digital machine hear? It is not words, but digital signals—high and low frequencies of different volumes. The computer only understands the sound signal, compares it, and assigns it to similar signals, and can assign meanings. To visualize this process and show the other side of human-machine interaction, the incoming sound signal is divided into five frequency ranges, from bass to treble. The approximate speech fundamental frequency of the human voice is shown in red. The digitally decomposed and analyzed signal is reproduced as a ‘response’—now synthesized from the previously measured frequencies. The rhythm of our own voice is still recognizable, but we cannot understand anything.