Processing Parameters
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the main clippers output level.
'HF CLIP LEVEL'
Controls the clip level of band 4
.
The clip level range is -12dB to 0 dB referenced to
the main clippers output level.
'HF CLIPPING'
This control redistributes band 4 peak control between the band 4 limiter and the HF clip-
per
.
The range is 0 to 17 with 0 equating to full control by the band 4 limiter and higher numbers produc-
ing less control by the band 4 limiter on a frequency dependent basis, leaving control by the HF clipper.
This control is similar to a variable de-emphasis control in the band 4 limiters side-chain control signal.
'MAIN CLIP DRIVE'
Controls the drive into the main output clipper that defines the systems peak clipping
ceiling. Adjustable over a -6dB to +6dB range.
'COMPOSITE CLIP
Controls the drive into the composite clipper which effectively sets the amount of
composite clipping. The range of composite clipping is -0.5dB to +2dB.
The
'ADVANCE'
menu contains the controls that fine tune final clipping
'DYNAMIC MULTI-BAND CLIPPING'
This control tries to raise the multi-band clipper thresholds if
it feels that there is room in the waveform to allow it and that distortion would not be introduced in
the main clipper. The range of multi-band clipping control is 1 to 10. Setting this control to 1 virtually
defeats the mechanism and the multi-band clippers will behave as previous versions. Higher numbers
will progressively make the mechanism work faster to raise the thresholds, add life and punch to the
audio. You will find that this control is more noticeable with lower MB clipper thresholds. You will prob-
ably be able to run the MB clipper thresholds a good few dB lower than previously if using this control
as the thresholds will be getting dynamically raised with program material.
'MAIN CLIPPER FINESSE'
Another distortion controlling mechanism that helps to reduce IMD in the
final clipper. The range is 1-10 with 10 producing the most distortion control. A setting of 1 effectively
bypasses this control. This control is very subtle and may not appear to do a lot on some program
material while a lot on others. HINT: Overdrive the main clipper to hear the effect of this control and
then back the drive back down after the finesse control is set to your taste.
'OVERSHOOT CONTROL'
Controls how much the main clipper will pass overshoots to the compos-
ite clipper. The range of overshoot control is 1 to 10 with lower numbers allowing more overshoots
through to the composite clipper.
'MAIN CLIP TYPE'
An extra distortion control mechanism in the main clipper that significantly
improves clipper performance. This new mechanism introduces an extra millisecond of delay so we
decided to make it switchable for people who want less latency. Options are 'cleaner' and 'less delay'.
'ITU LIMITER'
Sets the threshold of the integrated ITU limiter or turns it off. When activated, the unit
will comply with the ITU BS.412 standard that requires limiting the power of the broadcast MPX sig-
nal. This limiter will drastically reduce the loudness of your signal and should be used only if the regu-
lations in your country require you to comply with ITU BS.412. Otherwise set this parameter to off.
The thresholds are calibrated in dB relative to the ITU BS.412 reference.
The 'OUTPUT' menu contains all of the options and parameters relating to the control and conditioning
of the audio outputs.
The
'ANALOG'
menu contains the controls relevant to the analogue outputs.
'OUTPUT LEVEL'
Controls the output level of the analogue output. Range is -12dBu to +24dBu
'MODE'
This parameter sets the output mode of the analogue and headphones outputs. The available
options are FM, DR and MON representing the distortion controlled clipping path, the look-ahead limiting
path and the lower latency (delay) talent (DJ) monitor path.
'DE-EMPHASIS'
This controls the de-emphasis setting of the analog and headphones outputs. Options
are Off, 50 µS (Europe) and 75 µS (USA)
The
'DIGITAL'
menu contains the controls relevant to the AES/EBU digital outputs.
'OUTPUT LEVEL'
Controls the peak output level of the digital output. Range is -12dBFS to 0dBFS
