EQ
• High Pass Filter: Filters out frequencies below a designated frequency point, allowing frequencies above the frequency point to pass through. AKA low cut.
      
 • Low Shelf: Either boosts or reduces gain under a
designated frequency point.
       
 • Peak: boosts or cuts frequencies around a
selected center frequency. Can change "Q" or
width from bell-shaped to narrow notch.
    
      
    
• High Shelf: Either boosts or reduces gain
above a designated frequency point.
   
   
      
• Low Pass Filter: reduces frequencies above a
certain frequency. AKA high cut.

Compressors
• Attenuates audio above a designated threshold at a designated ratio, attack time and release time.

• Threshold: Signals that exceed this level will be compressed.
Signals that are below it will be unaffected. A level setting of 0 dB is
equivalent to no compression.

• Ratio: Sets the compression ratio. The range is based on decibels
above the threshold. For example, if this is set to 2:1, it will
compress changes in signals above the threshold by one-half.

• Attack and Release: the compressor’s ‘grip’ on the signal; how
long it activates and de-activates the attenuation on the signal.

• Gain Reduction: The amount of gain being reduced by the compressor

Limiters
• A compressor with a high ratio, typically well over 10:1.

• Reduction: Indicates the amount by which the signal is being
attenuated.

• Threshold: Sets the threshold level. Signals that exceed this level
will be limited. Signals that are below it will be unaffected.

• Attack and Release: the limiter’s ‘grip’ on the signal; how long it
activates and de-activates the attenuation on the signal.

• Lookahead: Pre-activates the given limiting settings by a designated time. 

Expander/Gate
• Reduces noise by decreasing the gain of signals that fall below a
user-selectable threshold. AKA “noise gate”

• Threshold: Sets the threshold level. Signals that fall below the
threshold will be reduced in gain. Signals that are above it will be
unaffected.

• Ratio: Sets the amount of expansion. For example, if this is set to
2:1, it will lower signals below the threshold by one half. At higher
ratio levels (such as 30:1 or 40:1) the Expander/Gate functions like
a gate by reducing lower level signals much more dramatically.

• Range: how much will volume be reduced.

DeEsser
• reduces sibilance (“s,” “sh,” and “t” sounds) and other high
frequency noises that can occur in vocals, voice-overs, and wind
instruments such as flutes.

• Reduction: Indicates the amount of gain reduction in dB. It
remains at 0 dB level when the input signal is below the threshold.

• Frequency: Sets the frequency band in which the DeEsser
operates. Frequencies in the specified range will be gain reduced.
To find the optimum frequency setting, sweep this control back and
forth during audio playback.

Pitch shift
• Changes frequency of signal as happens with slowing down or speeding up the signal; may or may not compensate for time duration change.

• Ratio: amount of pitch change. More than 1 is faster/higher; less than 1 is slower/lower.

• Big changes with coarse, small changes with fine.

• Choose time correction box if you want duration/pacing to stay the same, but just the pitch to increase/decrease. Otherwise it will slow down/speed up the sound.

Reverb
• Places the signal in different ‘rooms’
• Mix: how much of the signal you want affected.

• Diffusion: airiness/looseness of the signal. High settings result in high initial build-up of echo density. Low settings cause low initial buildup.

• Decay: how long does each element persist. How echoey.

True verb
• Basically creating the model of the sound envelope

Normalize
• boosts the highest level of the waveform to the maximum amplitude
of the system, short of clipping, and then raises the rest of the
signal by the same proportion. This maximizes resolution and
minimizes certain types of noise.

Gain
• Boosts or lowers the amplitude of a signal by a specific amount.
Does not take into consideration the total dynamic range like
normalize.

Delay
• Like singing in rounds

• Should create discreet echoes

Modulation
• Chorus adds a pitch-shifted, time-delayed copy of the audio signal
to itself.

• Flanger adds a time-delayed copy of the audio signal to itself.

• Wetness: The output of an effects device is 100% wet when
only the output of the processor itself is being heard, with none
of the dry (unprocessed) signal.

• Change Feedback on right side = robot-like voice.

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