02.02.2013 Views

1. First steps in Reaktor Core - Native Instruments

1. First steps in Reaktor Core - Native Instruments

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Here is a test<strong>in</strong>g structure for the clipper module we have built (an audio core<br />

cell has been used):<br />

And this is what you should see <strong>in</strong> the panel:<br />

In fact, there are a number of such “modulation” clipper macros found <strong>in</strong> the<br />

Expert Macro > Clipp<strong>in</strong>g menu.<br />

6.3. Build<strong>in</strong>g a simple sawtooth oscillator<br />

Let’s build a simple sawtooth oscillator, generat<strong>in</strong>g a sawtooth waveform with<br />

amplitude 1 and a specified frequency. We will use the follow<strong>in</strong>g algorithm:<br />

<strong>in</strong>crement the output signal level at constant speed and at the moment the<br />

level becomes greater than 1 drop it by 2.<br />

Instead of dropp<strong>in</strong>g by 2 we could reset the level to –1, but that is<br />

generally not as good, because we won’t be able to precisely ma<strong>in</strong>ta<strong>in</strong><br />

the specified oscillator frequency.<br />

The <strong>in</strong>crement<strong>in</strong>g speed def<strong>in</strong>es the oscillator frequency by the follow<strong>in</strong>g<br />

equation:<br />

d = 2f / f SR<br />

where d is the level <strong>in</strong>crement per one audio sample,<br />

f is the oscillator frequency and fSR is the sampl<strong>in</strong>g rate.<br />

108 – REAKTOR CORE

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