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// WARNING: This a "legacy example based on a deprecated library". Check noises.lib | |
// for more accurate examples of noise functions | |
declare name "Noise"; | |
declare version "1.1"; | |
declare author "Grame"; | |
declare license "BSD"; | |
declare copyright "(c)GRAME 2009"; | |
//----------------------------------------------------------------- | |
// Noise generator and demo file for the Faust math documentation | |
//----------------------------------------------------------------- | |
<mdoc> | |
\section{Presentation of the "noise.dsp" Faust program} | |
This program describes a white noise generator with an interactive volume, using a random function. | |
\subsection{The random function} | |
The \texttt{random} function describes a generator of random numbers, which equation follows. You should notice hereby the use of an integer arithmetic on 32 bits, relying on integer wrapping for big numbers. | |
<equation>random</equation> | |
\subsection{The noise function} | |
The white noise then corresponds to: | |
<equation>noise</equation> | |
</mdoc> | |
random = +(12345)~*(1103515245); | |
noise = random/2147483647.0; | |
<mdoc> | |
\subsection{Just add a user interface element to play volume!} | |
Endly, the sound level of this program is controlled by a user slider, which gives the following equation: | |
<equation>process</equation> | |
</mdoc> | |
<mdoc> | |
\section{Block-diagram schema of process} | |
This process is illustrated on figure 1. | |
<diagram>process</diagram> | |
</mdoc> | |
process = noise * vslider("Volume[style:knob][acc: 0 0 -10 0 10]", 0.5, 0, 1, 0.1); | |
<mdoc> | |
\section{Notice of this documentation} | |
You might be careful of certain information and naming conventions used in this documentation: | |
<notice/> | |
\section{Listing of the input code} | |
The following listing shows the input Faust code, parsed to compile this mathematical documentation. | |
<listing/> | |
</mdoc> |