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<meta name="description" content="Tom's Audio Processing plugins for
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<meta name="keywords" content="TAP-plugins TAP Reverb Editor
Reverberator Equalizer EQ Vibrato Tremolo Echo Tom Szilagyi LADSPA
JACK Plugin Linux Audio">
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<tr><td>
<font size="+2" color=#004060><b>TAP</b>-plugins</font><br>
<font color=#004060>Tom's Audio Processing plugins</font><br>
<font size="-1" color=#004060><i>for audio engineering on the Linux
platform</i></font>
</td><td>
<center>
<a href="../index.html">[ Home ]</a>
<a href="../ladspa.html">[ LADSPA plugins ]</a>
<a href="../reverbed.html">[ TAP Reverb Editor ]</a>
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<a href="releases.html">[ Releases ]</a>
<a href="general.html">[ General Info ]</a>
<a href="manuals.html">[ Plugin Manuals ]</a>
</center>
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</table>
<blockquote>
<a href="autopan.html">[ TAP AutoPanner ]</a>
<a href="chorusflanger.html">[ TAP Chorus/Flanger ]</a>
<a href="deesser.html">[ TAP DeEsser ]</a>
<a href="dynamics.html">[ TAP Dynamics (Mono & Stereo) ]</a>
<a href="eq.html">[ TAP Equalizer and TAP Equalizer/BW ]</a>
<a href="doubler.html">[ TAP Fractal Doubler ]</a>
<a href="pinknoise.html">[ TAP Pink/Fractal Noise ]</a>
<a href="pitch.html">[ TAP Pitch Shifter ]</a>
<a href="reflector.html">[ TAP Reflector ]</a>
<a href="reverb.html">[ TAP Reverberator ]</a>
<a href="rotspeak.html">[ TAP Rotary Speaker ]</a>
<a href="limiter.html">[ TAP Scaling Limiter ]</a>
<a href="sigmoid.html">[ TAP Sigmoid Booster ]</a>
<a href="echo.html">[ TAP Stereo Echo ]</a>
<a href="tremolo.html">[ TAP Tremolo ]</a>
<a href="tubewarmth.html">[ TAP TubeWarmth ]</a>
<a href="vibrato.html">[ TAP Vibrato ]</a>
</blockquote>
<h2>TAP Pink/Fractal Noise</h2>
<img src="tap_pinknoise.png" alt="[TAP Pink/Fractal Noise GUI as shown in Ardour]">
<p>
This plugin came to life as a secondary product of the development of
<a href="doubler.html">TAP Fractal Doubler</a>. It adds pink noise to
the incoming signal using a one-dimensional random fractal line
generated by the Midpoint Displacement Method, which is a
computationally cheap method suitable for generating random fractals.
</p>
<h3>General information</h3>
<table cellspacing="0" cellpadding="5" border="1">
<tr><th align="left">Unique ID</th><td>2155</td>
<tr><th align="left">I/O ports</th><td>1 input / 1 output</td>
<tr><th align="left">CPU usage (44.1 kHz)</th><td>1.5%</td>
<tr><th align="left">CPU usage (96 kHz)</th><td>3.3%</td>
<tr><th align="left">Hard RT Capable</th><td>Yes</td></tr>
<tr><th align="left">In-place operation</th><td>Supported</td>
<tr><th align="left">run_adding() function</th><td>Provided</td>
</table>
<h3>Usage tips</h3>
<p>
The fractal line has one parameter: <i>Fractal Dimension</i>, which
may be between 0 and 1. This parameter determines the spectral density
of the generated noise. The graph below demonstrates 1024 samples of
generated fractal noise using three different settings of the Fractal
Dimension. The green graph was made with a setting of 0 (so it is
white noise, actually), the red curve is of Fractal Dimension 0.5 and
the blue one's dimension is 1.
</p>
<img src="fractal.png" alt="Fractal Noise Samples">
<p>
In addition to setting the Fractal Dimension of the generated pink
noise, you can mix it to the incoming signal in different
amounts. This way you can emulate different signal/noise ratios, and
therefore test how your tracks degrade due to additive noise. A really
geeky entertainment for hardcore mixing engineers.
</p>
<h3>Summary of user controls</h3>
<table cellspacing="0" cellpadding="5" border="1">
<tr><th>name</th><th>min. value</th><th>default value</th><th>max. value</th></tr>
<tr align="center"><td>Fractal Dimension</td>
<td>0</td>
<td>0.5</td>
<td>1</td></tr>
<tr align="center"><td>Signal Level [dB]</td>
<td>-90</td>
<td>0</td>
<td>20</td></tr>
<tr align="center"><td>Noise Level [dB]</td>
<td>-90</td>
<td>-90</td>
<td>20</td></tr>
</table>
<h3>Notes</h3>
<p>
It is always worth putting this plugin on your tracks... because when
you turn it off, they suddenly get so much better! :-)
</p>
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