Technical information

McDSP plug-ins
ML4 Applications
Mastering
The ML4000 ML1 and ML4 con gurations are designed for mastering. However,
there are several techniques discussed below that may not be apparent when
attempting to maximize signal levels, or to make levels consistent between
songs, in a particular project.
The most common use of the ML1 and ML4 is to increase signal levels across
the entire mix. The Output Ceiling control sets the maximum signal level,
andthe master Threshold control determines where signal level increases start.
TheRelease, Knee, and Mode controls may be used to set up the subjective
sound of the limiter.
The Multi-band Dynamics Processor can be used to augment or correct the
input signal and best prepare it for treatment by the mastering limiter, as
given in the techniques that follow:
Increasing Loudness without Limiting
Instead of using the mastering limiter to increase perceived loudness, the
multi-band expander can accomplish the same task, and reduce the amount
of limiting needed. Using the multi-band expanders as upwards expanders
(range > 0 dB, ratio between 1.5:1 and 2:1, moderate attack and release times),
the overall signal levels are increased as they fall below the selected threshold.
Because overall signal levels are only being increased when they are below a
threshold, the output peaks do not exceed their original levels, and then less
(if any) limiting is needed. Such a technique can be a subjective improvement
over normal limiting.
EQ
While there is no EQ section in the ML4, the crossovers and the band output
gains are the basic controls of a graphic EQ of sorts. The output levels of each
band can be altered and then recombined in the mastering limiter section.
NOTE
When using the limiter to set an output ceiling, the ‘EQ’ levels can be set
to prevent overshoots in output levels.