Chapter | five
How Large Is an Audio Signal?
CHAPTER OUTLINE
When describing the size of an audio signal, it is very important that there is agreement on what techniques to use to make the measurement. Otherwise there is a risk that differently measured values are not comparable.
ACOUSTIC SIGNALS
As a rule acoustic signals must be measured using transducers, for example microphones. An electrical signal that is analogous to an acoustic signal is what is really being used in practice when one performs this magnitude measurement.
ELECTRICAL SIGNALS
An electrical signal can be described by amplitude values for the voltage or current. Alternately, ...
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