Orban OPTIMOD-FM 8500S Operating Manual page 204

3-40
OPERATION
•
uses more sophisticated signal processing than H
M
EDIUM
substantially.
•
S uses the most sophisticated look-ahead signal processing to reduce distor-
OFT
tion further. Using S
that the total is approximately 36 ms).
and are not available in Low Latency mode. The bass clipping is always
M
EDIUM SOFT
H , but the H C
ARD ARD LIP
•
LLH differs in two ways from the normal H
ARD
•
LLH automatically defeats the compressor lookahead. This action is function-
ARD
ally equivalent to setting the L
input/output delay by 5 ms).
•
prevents the bass clipper from switching to M
LLH
ARD
speech is detected. By constraining the system in these ways, it ensures that the
delay is always 13 ms.
To minimize speech distortion, the speech/music detector automatically
switches the bass clipper to M
that the Five-Band structure is active, L
is set to H
M
ODE
speech/music detector.) If the bass clipper is set to LLH
speech/music detector will reset the clipper threshold to the setting speci-
fied by the S
PEECH
sults in very little bass clipper action during speech. This prevents audible
speech distortion that this clipper might otherwise introduce.
Switching the B
five milliseconds of delay from the signal path. Switching can cause audi-
ble clicks, pops, or thumps (due to waveform discontinuity) if it occurs
during program material. If you have some presets with LLH
per mode and some without, switching between these presets is likely to
cause clicks unless you do it during silence. However, these clicks will
never cause modulation to exceed 100%.
One of the essential differences between the H
per modes is that switching between Hard and Med does not change de-
lay and is therefore less likely to cause audible clicks.
The H
C S
ARD LIP
over the sound of the H
•
uses more sophisticated signal processing than H
M
EDIUM
substantially.
•
S uses the most sophisticated look-ahead signal processing to reduce distor-
OFT
tion further. Using S
that the total is approximately 36 ms).
and are not available in Low Latency mode. The bass clipping is always
M
EDIUM SOFT
H , but the H C
ARD ARD LIP
adds an additional 18 ms of delay to the processing (so
OFT
S control is still available to "soften" the clipping.
HAPE
OOKAHEAD
when speech is detected, provided
EDIUM
. (See "Lookahead" on page 3-63 for more about the
ARD
control. The default setting is "0 dB," which re-
BCT
HR
C M to LLH
ASS LIP ODE ARD
control (in Advanced Control) offers further control
HAPE
and LLH
ARD ARD
adds an additional 18 ms of delay to the processing (so
OFT
S control is still available to "soften" the clipping.
HAPE
ORBAN MODEL 8500S
to reduce distortion
ARD
mode of the bass clipper:
ARD
control to O , except that it reduces
UT
EDIUM
is H , and the B
ATENCY IGH
(from any other mode) removes
ARD
and LLH
ARD ARD
modes. See page 3-41.
to reduce distortion
ARD
mode whenever
C
ASS LIP
, the
ARD
bass clip-
bass clip-