![]() The Spectrogram display shows the individual harmonics and overtones of a wave-the horizontal white bars-over time. Using graphic tools-probably familiar from Photoshop and other image-editing software-the Spectral Filter lets you select (or remove) specific elements of a complex wave, for a degree of control that traditional Filters can only dream about. Of course, Iris 2's main event is the Spectral Filter. There are also user options for determining how multiple Mod sources will interact, when applied to the same parameter, something that's often pre-determined in many synths. This makes it a breeze to set the appropriate amount of modulation, especially when multiple Mod sources are applied to the same parameter. Not only do you get a clear indication of the affected range, but as you play, the current position of the parameter is also indicated (Fig 2). Three color-coded rings surround each parameter, and these change as you tweak the Modulation depth from the mod assignment circle. IZotope has incorporated a clever visual scheme to show & set the range (depth) of Modulation. The assignments are made right there at the parameter itself, either by local menu or drag & drop (Fig 2). Iris 2's take on the Modulation Matrix concept offers up to three Modulators for almost every parameter-the three circles adjacent to each modulatable parameter. But often, the total number of modulation routings is limited, and while this is probably fine for basic patches, it doesn't provide as much flexibility for more complex setups as, say, a classic modular synth would have. Many synths & samplers offer a Modulation Matrix, often implemented as a set of text boxes that allows the assignment of various controllers-internal & external-to various parameters. The new Modulation system brings a very high degree of flexibility to programming sounds in Iris 2. Let's take a brief look at some of the key features. ![]() Iris 2 also incorporates iZotope's Radius RT pitch-shifting algorithm. Of course, the centerpiece is still the Spectral Filter, which allows for an unprecedented degree of flexibility in audio tweakery and sound design. Now, Iris 2 continues the evolution of that synth with a host of new features and enhancements, including a powerful new Modulation system, enhanced Effects, and new content that totals 11 GB in all. ![]() Not long ago, iZotope incorporated their powerful Spectral Processing feature-from their audio repair software, RX-as the Spectral Filter in the original Iris synthesizer.
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