-- card: 5482 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 3551
-- name: 


-- part contents for background part 3
----- text -----
amplitude

-- part contents for background part 4
----- text -----
the vertical distance between two peaks in a waveform.

The amount of a signal, measured by determining the amount of fluctuation in air pressure (of a sound) or voltage (of an electrical signal). When the signal is in the audio range, amplitude is perceived as loudness.

-- part contents for background part 16
----- text -----
177