BSS Audio DPR-402 Owner's Manual - Manual (Page 30)

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14.3 De-essing
Wide with
Simultaneous
Compression
Barrier strip linking B-C and D-G (as factory set).
Rotate the THRESHOLD control anticlockwise until the BELOW THRESHOLD
meter is fully illuminated and an appropriate amount of gain reduction is
indicated on the GAIN REDUCTION meter. The FREQ control and
THRESHOLD control can now be fine tuned to achieve the desired effect
whilst listening to the program. Gain compensation will not normally be
required when de-essing. Although fast attack and release times are most
appropriate, they should be adjusted to achieve the best results. The 'auto'
position should NOT be used.
To aid the correct setting of the FREQ control in relation to the audible
sibilance, the source program can be listened to through the internal de-ess
filter by depressing the MON S.C. switch. This replaces the normal signal at
the output connector with the output of the de-ess filter.
The peak limiter can be used simultaneously with wide band de-essing, should
it be required.
14.4 De-ess Wide
with Full Dynamic
Control
Barrier strip linking B-C and D-G (as factory set).
Initial settings.
Controls Position
MODE SWITCH
THRESHOLD
RATIO
ATTACK
RELEASE
GAIN
CHN BYPASS
DE-ESS THRSHLD
FREQ
PK LIM THRSHLD
De-ess wide
Out
Infinity
50 microseconds
100 milliseconds
0dB
In (Illuminated)
Out
4kHz
Out
Operation/Applications
Initial settings.
Set all compressor controls as required (refer to section 14.1). For optimum de-
essing effect, no more than 10-15dB of compression should be used. If
compression is not required, then set THRESHOLD to OUT.
Controls
Position
DE-ESS THRSHLD
FREQ
PK LIM THRSHLD
Out
4kHz
Out
Under program control, gradually rotate the DE-ESS THRESHOLD control
anticlockwise until the required effect is achieved. The FREQ control can also
be adjusted to ensure that frequencies lower than those causing concern do
not initiate de-essing. It should be remembered that this de-essing is wideband
and may cause distortion or pumping effects if the source program contains
significant low frequencies.