Damped sinusoids and complex frequency
Frequency f
0
(Hz)
σ (s
−1
)
Play
Window
20 ms
200 ms
2 s
s
= σ + iω
0
=
ω
0
= 2πf
0
=
Time constant
τ = −1/σ =
60 dB decay
ln(1000)·τ =
Space bar = play. Playback is
long and is scaled to the same peak level whatever σ is.