CHAPTER 21. LIVE AUDIO EFFECT REFERENCE
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The Volume control adjusts the amount of gain applied to the noise.
21.31
Vocoder
The Vocoder Effect.
A vocoder is an effect that combines the frequency information of one audio signal (called
the
carrier
) with the amplitude contour of another audio signal (called the
modulator
). The
modulator source is generally something with a clear rhythmic character such as speech or
drums, while the carrier is typically a harmonically-rich synthesizer sound such as a string or
pad. The most familiar application of a vocoder is to create talking synthesizer or robotic
voice effects.
Vocoders work by running both the carrier and modulator signals through banks of bandpass
lters. The output level of each of the modulator's lters is then analyzed and used to control
the volume of the corresponding lter for the carrier signal.
Live's Vocoder should be inserted on the track that contains the audio material you plan to
use as your modulator. The Carrier chooser then provides a variety of options for the carrier
signal:
Noise
uses Vocoder's internal noise generator as the carrier source. With this selected,
an X-Y display is shown which allows you to adjust the character of the noise. The
horizontal axis adjusts downsampling. Click and drag to the left to decrease the
sample rate of the carrier's output. The vertical axis adjusts the density of the noise.
Click and drag downward to decrease the density.
