0
5k
10k
15k
20k
25k
30k
35k
40k
−4
−3
−2
−1
0
1
2
3
4
Grid
Signal (
w = e
⊙
c
)
Carrier (
c
)
Envelope (
e
)
Positive Frontier
Negative Frontier
spoken_voice
i
Amplitude
plotly-logomark