| a
measure of the range (spectrum) of frequencies which a given system will
be able to process. in humans our frequency
response is normally 20 - 20,000 Hz
with differing sensitivity depending on where in the spectrum the signal
is. (see equal
loudness contours) in electronic systems
the frequency response will also include a graph of intensity over time
to indicate how the system deals with different frequency ranges.
the ideal
system would be indicated by a
flat line; most drop off at the extremes,
indicating the system's lower sensitivity to very low or high frequency
signals.
the
intensity is usually measured in dB.
thus a sound system may be said to have a frequency response of .30 - 21KHz
+/- 1dB.
this would indicate a fairly "flat" response with little colouration of
the sound by the system. |