This sound of alarm clock was entirely made with audacity. First, i generated a sinusoïdal key at 575 hz with an amplitude of 0. 11 during 3 seconds. Then i deselect my track and i generated an other sinusoïdal key at 1500 hz with an amplitude of 0. 33 during 3 seconds too. I deselected the track and i generated a final sinusoïdal key at 2800 hz with an amplitude of 0. 56 during 3 seconds. Next i selected my 3 tracks and i clicked on track - mix and render to a new track. I added a tremolo effect with a reverse serrated and a degree of 0, a level of 100 and a frequence at 25,0 hz. The wave must looks like stuck triangles.
Author: Univ Lyon