Playback for 20 seconds.

100 Hz wave: sin(t*2)*sin(t*100)

Antimatter reactor: sin(t*3)*sin(t*120)+sin(t*2)*sin(t*120)

Helicopter takeoff: sin(t/sin((t/50)*t))

Announcement: (sin(100*t)+sin(200*t)+sin(300*t)+sin(440*t)*(t>2* 2*pi)+sin(600*t)*(t>2.5*2*pi)+sin(250*t)*(t>3*2*pi )+sin(50*t)*(t>5*2*pi)+sin(100*t)*(t>5.5*2*pi)+sin (150*t)*(t>6*2*pi)+sin(t*2)*sin(t*100)*(t>8*2*pi)+ sin(t*5)*sin(t*100)*(t>8*2*pi)+sin(80*t/sin(0.1*t))*(t>12*2*pi))+(sin(t*3)*sin(t*120)+sin( t*2)*sin(t*120))+sin(t*4)*sin(t*200)*sin(t*40)+sin (t*8)+sin(t*400)

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram