User Manual

Copyright © 2014 iZotope, Inc. All rights reserved.
OPTIONS
Iris 2 | OPTIONS PANEL Page 69
Clear selections on sample load: When checked, this removes any Spectral Filter
selections made on the spectrogram when a new sample is loaded. For example, if you
make a complex Spectral Filter selection and want to try a new sample with this selection,
you would uncheck this box.
Radius RT Options
When Radius RT is used as a sample playback mode, CPU performance is influenced
significantly by the range and limits within which Radius RT must function.
Radius RT High Quality Mode
Enabling this feature will provide higher quality pitch-shifting for any samples making use of
the Radius RT pitch mode, at the expense of significantly increased CPU usage. If you are
experiencing diculties with seamless playback using High Quality Mode, we recommend
disabling this option to allow Radius RT to run at its default settings.
Radius RT Range
This sets the maximum allowed range above and below each sample’s root note that Radius
RT will perform its pitch shifting. If any notes are played outside of the specified octave
range, they will simply playback as the highest available note in the set octave range.
When using Radius RT on any particular sample, the higher that the sound is pitch shifted up
from its root note, the more CPU intensive the process gets in order to maintain its quality.
Increasing the Radius RT Range can therefore lead to more CPU-intensive operation of Iris
when performing large pitch shifts.
Radius RT Limit
With samples that are using the Radius RT pitch mode, each time a note is played, an
instance of Radius RT will be needed to process that audio for that particular sample.
The Radius RT Limit determines the maximum number of Radius RT instances that will be
available. The more Radius RT instances that are made available the more CPU-intensive
playback in Iris can get.
The number of voices that can be played using Radius RT is dependent upon how many
samples are using the Radius RT pitch mode. If two samples are using Radius RT, and your
Radius RT Limit is set to four samples, only two voices will be available for playback. If your
Limit is the same with only one sample using Radius RT, four voices would be available.