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3.5.6
Program Insert
The INSERT button globally controls whether program inserts are used. Separate settings are
maintained for Stereo and Surround Mode.
3.5.7
Program EQ
There are three independent second-order parametric equalization filters, corresponding to
high-frequency (HF), mid-frequency (MF) and low-frequency (LF) ranges. They are activated when
their individual buttons are pressed. All have a parametric cut/boost equalization curve with
variable Q. The low frequency EQ has an additional button to switch between parametric and
shelving filters. The parametric and shelving functions are the same as those available in each
individual channel.
Note:
Unlike the EQ in the channel strips, these filters do not have a separate engage button, they
are activated as soon as their individual buttons are pressed.
Separate settings are maintained for Stereo and Surround Mode.
3.5.8
Program Dynamics
Each program channel has a limiter followed by an independent compressor. The compressor has
additional controls for ratio, overeasy (allowing the user to adjust the hardness of the 'knee') and gain
make-up. The gain reduction meter monitors both limiter and compressor, showing the limiter in
light orange and the compressor in dark orange. The total bar height shows the sum of the gain
reduction from the two sections. Separate settings are maintained for Stereo and Surround Mode.
Linking: The stereo dynamics are permanently linked. The surround dynamics are permanently
linked except for the LFE channel which is switchable. The LFE switch both unlinks and switches
out the LFE dynamics. This applies to both limiter and compressor.
3.5.9
HF Control (Annex D.4 Filter)
The Annex D.4 filter is a variable slope and frequency low pass filter provided to assist with
compliance with Annex D.4 of the Scarlet Book Part 2 (Audio Specification), which specifies the
maximum High Frequency Signal + Noise Level. Practically, this filter can be used in conjunction
with the Annex D meter labeled HF to correct signals which do not comply with Annex D.4. If a
DSD signal intended to be put on SACD exceeds the HF specification (meters will show an over
condition) then this filter may be used to attenuate some of the level in the frequency ranges
measured by the HF meters. For best results, the minimum amount of filtering should be used to
achieve Annex D.4 compliance. For cases where the HF level is within specification, this filter need
not be used.
Separate settings are maintained for Stereo and Surround Mode.
3.5.10
Master Fader
The master fader applies gain or attenuation to all output program material. The CUT button silences
all outputs. If the mixer is not locked to a clock source a warning message will appear above the
master fader.
Separate settings are maintained for Stereo and Surround Mode.
82
Chapter 3: Sonoma Mixer
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