Table of Contents
Overview
Polyvox is a voice generator that allows you to create vocal harmonies based on your vocal. Voice generators come in all shapes and sizes but are based on a similar fundamental concept: sampling an incoming audio signal and then creating multiple additional versions of this audio signal using time/pitch stretching to achieve different intervals, such as an octave down, a third up, and so on. Voice generators are most commonly used on voice but there are many examples of this type of technology being used in guitar effects as well, usually some combination of pitch/whammy adjustment.
Controls
ENABLE
Enables/disables Polyvox module processing.
FORMANT
Transposes the vocal formants of the signals it reproduces. This type of control is often talked about as the difference between deeper voiced and higher, chipmunk-style sounds.
CHARACTER
Controls the relationship between the incoming vocal’s formant envelopes and how they are applied to the outgoing sound.
A higher value will cause the formants themselves to shift more in the direction of the pitch of the audio (e.g. sing a higher pitch, formants scale upwards). Interestingly, this parameter can be used to increase naturality, if, say, the generated voices were consistently a lot higher or lower than the original source, or it can be used to push a voice into a sonic realm the human voice-box isn’t capable of. Pro tip: This is a lot safer than Helium.
By default, the voices generated by Polyvox will sound like your voice singing at potentially different pitches. The algorithm preserves the formants of an incoming vocal exactly as is…crucial for a natural sound.
HUMANIZE
Varies time and pitch offset amount applied to the generated voices. This reduces phase cancellation and can increase realism slightly.
A higher Humanize value will start to introduce more extreme variations to the point of detuning, a very powerful auditory sensation, especially when done in unison.
LVL
Controls the output level of the Polyvox module.
Note
You can also control the Polyvox output level by dragging the node labeled ‘P’ that appears in the anemone visualization when the Polyvox module is enabled.
ADVANCED VIEW BUTTON
You can open the Advanced View window by clicking on the mixer button at the bottom of the module’s main panel:
Advanced View: Mix
Adjusts stereo pan position and pass filter controls of the module’s output signal.
PAN
Controls the stereo pan position of the module’s output signal.
FILTER
Adjusts the center frequencies of high-pass and low-pass filters applied to the module’s output signal. Clicking and dragging on a node will adjust the center frequency of that filter. Clicking and dragging in the space below the two nodes will move both nodes at the same time.
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