Overview

Uniformly distributed white noise generator

Discussion

Generates uniformly distributed random values at the sample rate in the specified range. Internally, the module uses a random number generator and then scales the values into the proper range.

Note: if a constant RNG seed is required, please use the Rand module.

Type Definition

typedef struct _ModuleWhiteNoise
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    FLOAT32 range;                                // Generated noise will be in the interval [-range +range].
    awe_modRandInstance *rand; // Random number generator using a LCG algorithm
    awe_modTypeConversionInstance *int2flt; // Converts between numeric data types
    awe_modScalerV2Instance *scale; // General purpose scaler with a single gain
} ModuleWhiteNoiseClass;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
range	float	parameter	0	1	-10:10	range

Pins

Output Pins

Name: out

Description: audio output

Data type: float

Scratch Pins

Channel count: 1

Block size: 32

Sample rate: 48000

MATLAB Usage

File Name: white_noise_module.m

 M=white_noise_module(NAME, SR, NUMCHANNELS, BLOCKSIZE)
 Creates a white noise generator for use in the Audio Weaver environment.
 The module has a single multichannel output pin.
 Arguments:
    NAME - name of the module.
    SR - sample rate of the output.
    NUMCHANNELS - number of interleaved channels in each output pin.
    BLOCKSIZE - number of samples per output channel.

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(8.D.2.6) WhiteNoise