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Table Of Contents
Setting Multipressor Compression Parameters
The Compression Threshold and Compression Ratio parameters are the key parameters
for controlling compression. Usually the most useful combinations of these two settings
are a low Compression Threshold with a low Compression Ratio, or a high Compression
Threshold with a high Compression Ratio.
Setting Multipressor Downward Expansion Parameters
The Expansion Threshold, Expansion Ratio, and Expansion Reduction parameters are the
key parameters for controlling downward expansion. They determine the strength of the
expansion applied to the chosen range.
Setting Multipressor Peak/RMS and Envelope Parameters
Adjusting the parameter between Peak (0 ms, minimum value) and RMS (root mean
square -200 ms, maximum value) is dependent on the type of signal you want to compress.
An extremely short Peak detection setting is suitable for compression of short and high
peaks of low power, which do not typically occur in music. The RMS detection method
measures the power of the audio material over time and thus works much more musically.
This is because human hearing is more responsive to the overall power of the signal than
to single peaks. As a basic setting for most applications, the centered position is
recommended.
Setting Multipressor Output Parameters
The Out slider sets the overall output level. Set Lookahead to higher values when the
Peak/RMS fields are set to higher values (farther toward RMS). Set Auto Gain to On to
reference the overall processing to 0 dB, making the output louder.
Noise Gate
The Noise Gate is commonly used to suppress unwanted noise that is audible when the
audio signal is at a low level. You can use it to remove background noise, crosstalk from
other signal sources, and low-level hum, among other uses.
The Noise Gate works by allowing signals above the threshold level to pass unimpeded,
while reducing signals below the threshold level. This effectively removes lower-level
parts of the signal, while allowing the desired parts of the audio to pass.
54 Chapter 3 Dynamics Processors