ðə pɹˈɑːsɛs bɪɡˈɪnz wɪð bˈækɡɹaʊnd nˈɔɪz pˈɪkt baɪ ɐ mˈaɪkɹəfˌoʊn ɡˌɛɾɪŋ ˈæmplᵻfˌaɪd baɪ ɐ spˈiːkɚɹ ɪn ðæt sˈeɪm dɪvˈaɪs.
The process begins with background noise picked by a microphone getting amplified by a speaker in that same device.