Game Development Reference
In-Depth Information
The Reverb Effect
The Reverb effect is one of the most frequently used audio effects
in the history of ever, as SpongeBob would say. If you've ever heard
a song recorded in a recording studio or watched a TV commercial
or seen a movie, you've heard an artifi cially added reverb effect.
The purpose of the Reverb effect is to add a slight echo, usually to
make audio sound more like it does in real life. In real life, when
you speak or play an instrument, the acoustics of the environment
(such as walls or the ceiling) bounce the sound around creating a
fullness. Reverb adds that fullness to audio that sounds fl at.
The echo added by the Reverb effect is usually much more sub-
tle than the echoes created by the Delay effect. You might think of
it this way: if you want the effect to be obvious, use delay. If you
want the effect to be imperceptible, use reverb.
The Reverb Time value determines the time (in milliseconds)
between the original audio and the echo. Increasing the Diffusion
value can create the illusion that the audio was created in a large
room. Decay determines how long it takes the echo to fade out. If
the sounds takes longer to fade away (which is created by a high
Decay value), then it indicates that there is more space in the
room. So, a larger Decay value is better for simulating audio in a
large space. Brightness refers to the treble values in the echoes.
Increase the Brightness value to brighten the reverberating sound.
Reverb is a great effect for blending audio. In the same way that
we adjust color to aid in compositing when combining visual ele-
ments, it's important to make sure that audio tracks that are sup-
posed to exist in the same scene have the same amount of reverb.
This is particularly important when using overdubs from actors
in movies.
The Stereo Mixer Effect
The Stereo Mixer effect is the tool to use if you need control
over the channels in a piece of audio. This effect gives you con-
trol over the volume (level) of the left and right channel indepen-
dently. It also allows you to change the panning for each channel.
If you're experiencing any weird audio anomalies because of this
effect, you can probably fi x it by enabling the Invert Phase check-
box, which ensures that the redistributed audio frequencies don't
clash with each other.
The Tone Effect
The Tone effect generates audio tones. It actually makes
sounds from scratch. The Tone effect is the only effect in the
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