Vinyl (in Tracing mode) and Saturator create the clearest peaks along with the least noise, and the corresponding waveforms look the most natural. Noise-modulated Erosion produces a constantly changing waveshape.
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Redux also produces the most radical waveform: the setting of 4-bits allows only 16 levels across the full amplitude range. Erosion with noise modulation adds the most noise and the fewest clear peaks, with Redux bit reduction coming a close second. The prominent peak about a third of the way through each spectrum marks the frequency of the sine wave source, A2 (220Hz) in this case. The spectra were captured from Live’s Spectrum audio effect, which is a good tool to keep in mind when exploring distortion plug-ins. Screen 1 (above) shows control panel settings for each device, along with the waveshape and frequency spectrum of the result of using these settings to process a sine wave. This will indicate how noisy the results can be and how you might expect more complex sounds to be affected. Let’s start with a look at how each of these devices affects the simplest thing you can feed it: a sine wave.
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These six devices offer a variety of unusual features that are covered in detail in the May 2011 Live column ‘ Distortion Effects In Live.’ This month we’re going to look at how to choose among these devices, how to combine them with other Live effects and where to place them in the effects chain. Screen 1: When fed a sine wave, Live’s six distortion effects produce the wave shapes and frequency spectra in the right column from the settings shown to their left. Finally, Vinyl Distortion combines even- and odd-harmonic distortion models with a Crackle generator. Saturator provides waveshaping by six preset curves as well as controls to dial in your own waveshaping curve. Redux features both bit-depth reduction and downsampling. Overdrive offers band-pass filtered clipping with built-in compression.
Erosion uses filtered noise or a sine wave to modulate the time of a very short delay. Dynamic Tube models the saturation produced by three common amplifier vacuum tubes. Live offers six audio effects designed to wreak havoc with the harmonic content of your audio clips and instrument presets: Dynamic Tube, Erosion, Overdrive, Redux, Saturator and Vinyl Distortion. Things get messy as we explore Live’s numerous distortion effects.
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