What good is seven-place accuracy with bum data?
The Green Hills of Earth, Robert A. Heinlein, Baen Publishing Enterprises, 1951.
∽ Chapter 12 Overview ∽
One of the key requirements in performing a successful experiment is to know the signal’s characteristics. Signals contain vital information about the process under investigation. Much information can be extracted from them, provided the experimenter is aware of the methods that can be used and their limitations.
Signals can be classified according to their waveform shape, described uniquely by their amplitudes and frequencies (12.1). The signal’s variables, including its amplitude, frequency, period, and phase, are the measures of a signal’s waveform ...