Adobe AUDITION 1.5 - Manual (Page 157)

149 ADOBE AUDITION 1.5
User Guide
Using the Echo Chamber effect
The Echo Chamber effect can simulate the ambiance of almost any room. Settings let you
specify a virtual room’s size and surface characteristics, along with the placement of virtual
microphones. The number of echoes is adjustable up to 500,000. Keep in mind that the
more echoes you include, the more time Adobe Audition needs to process the effect.
You can create a spatial, stereo expansion effect by setting the virtual microphones farther
apart than your actual stereo speakers. For example, if your stereo speakers are 6 feet apart,
try setting the left and right virtual microphones 20 or 30 feet apart.
Make sure that enough silence is at the end of the waveform for the echo to end. If the
echo is cut off abruptly before it fully decays, undo the Echo effect, add several seconds
of silence by choosing Generate > Silence, and then reapply the Echo Chamber effect.
To use the Echo Chamber effect:
1 Select an audio range (Edit View) or track (Multitrack View).
2 In the Effects tab of the Organizer window, expand Delay Effects, and double-click
Echo Chamber.
3 Set the desired options.
For more information, search for “Echo Chamber options” in Help.
Using the Multitap Delay effect
Multitap Delay can be thought of as a combination of the Delay, Echo, Filter, and Reverb
effects. You can create up to 10 delay units, each with its own delay, feedback, and filtering
settings.
If one delay unit is placed inside another (as viewed in the chart above the controls), then
the echo occurs more than once. As audio travels down the delay line (represented in the
chart by the bottom horizontal arrow pointing to the right) portions at any point can be
fed back into the delay line anywhere behind the given offset and at any feedback amount,
with any high or low cut filter. Experiment to achieve some very interesting effects.
Each delay unit is represented in the graph as a back-leading arrow starting at the Offset
and going back the number of milliseconds stated under Delay. A single delay unit is much
the same as the Echo function, but with a slightly different filtering setup. (It uses two
sliding bands with variable cutoff points instead of eight bands of filtering.)
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