BSS Audio DPR-402 Owner's Manual - Manual (Page 7)

7
The effect of Compression
2.1 Compression
2.0 The effect of Compression on sound
Consider an input signal which is applied to two units, one having its
threshold point set 10dB higher than the other. Since the compressor only
affects signals that exceed the threshold level, the signal with the lower
threshold applied will be more affected than the other. Referring to figures
2.2a & b, assuming that all other controls on both channels are set identically
with gains equalised, it is immediately apparent that the signal processed with
the higher ratio is said to have been limited, whereas the signal with the
lower ratio is said to have been compressed.
Fig 2.1a High threshold
level
Fig 2.1b Lower
threshold level
Fig 2.2a Effect of
compression with high
threshold
Fig 2.2a Effect of
compression with lower
threshold