The Effects Menu
Dynamic Processor
A dynamic processor is used to alter the dynamic properties
of the recording. To understand how a dynamic processor
works, imagine a sound engineer trying to maintain an as
steady volume level as possible while doing a recording.
When the input level increases he pulls down the volume
slider, and he pulls it up when the input level decreases.
A dynamic processor does the same thing automatically, only
with a very much faster reaction time.
Settings
- A editable curve containing the output level as a function of the
input level. By altering this curve you can change the dynamic
characteristics of the recording to fit your needs.
- The attack time, the reaction time when the input
level of the source material increases.
- The decay time, the reaction time when the input
level of the source material decreases.
Delay
Use this effect to add a simple echo effects to the recording.
Settings
- Delay time
- Feedback amount
- Effect mix
To add one simple delay, reduce the feedback amount to zero. By
raising the feedback a series of echoes will be audible.
Reverb
The reverb simulates the reverberation effect of some natural
surroundings.
Settings
- The algorithm which is used to select among some predefined
surroundings
- Reverberation time
- Reverb level
- Dry out level
Flanger
Flanger is an effect that would occur when hearing two loudspeakers
playing exactly the same recording, but with a slight time delay.
Changing the time delay slowly creates the profound flanger effect.
Settings
- Modulation frequency, which is how fast the
time delay changes.
- Modulation depth, which is how much the time
delay changes.
- Effect mix.
Chorus
The chorus effect simulates effect of several voices with slightly different vibratos.
This effect can be used to add warmth to the recording or to simulate more voices
singing or playing unison.
Settings
- Modulation frequency, speed of the vibratos.
- Modulation depth, vibrato depth.
- Effect mix.
Reverse
Simulates backward playing.
Harmonizer
The harmonizer allows you to transpose and mix up to four voices
in one operation. The transpose algorithm does not change the
length of the recording. The chipmunk effect that occurs when
transposing voice or musical instruments may be reduced by selecting
Preserve formants.
Voice Settings
- Transpose interval
- Fine tune, measured in cents which are 1/100 of a semitone.
- Volume
- Panning
Global Settings
- Formant preservation on or off
Transpose
The transpose function can transpose the recorded material with or
without changing the length. Note that the preview function
always uses transpose without change in length.
Global Settings
- Transpose interval
- Fine tune, measured in cents which are 1/100 of a semitone.
- Apply lowpass filter. Use this to avoid distortions (aliasing)
occuring when transposing large intervals.
- Maintain duration
Time Correction
The time correction feature allows you to change the length of the recording
without changing the perceived pitch. It is not physically possible to do this
without some sort of distortion and the quality of these time correction
algorithms lies in their ability to reduce the audible distortions. Acoustica
uses a method (PSOLA) that works well on monophonic signals like speech
and single musical instruments. However, some distortions occur on
high expansion or compression rates like in all other time correction
software.
The inner settings of the algorithm are affected by choosing
an optimization from one of the following, speech, music,
monophonic signals, percussive interments only.
Settings
- Scale factor, new length or new tempo (either one affects the compression or
expansion ratio)
- Optimization