footfall.generators
Class SoundGrainModel

java.lang.Object
  footfall.generators.SoundGrainModel

public class SoundGrainModel

extends java.lang.Object

Generates the sound grains used to simulate footfalls (contact, knocks, thumps etc). The sound grains are usually 25-75ms in duration, depending on the user-selected frames per second.

Constructor Summary

SoundGrainModel()
Provides functions for generating sound grains

SoundGrainModel(int bitRate)
Provides functions for generating sound grains at specific bitrate

Method Summary

int	getBitRate() Returns the bit rate of the sound grains.
float[]	makeFadingSineWave(int bytes, int freq, float startAmp) Generate sine wave that starts at given volume and then fades out
float[]	makeWhiteNoise(int bytes, int freq, float maxAmp) Generate white noise at given frequency and amplitude

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SoundGrainModel

public SoundGrainModel()

Provides functions for generating sound grains

SoundGrainModel

public SoundGrainModel(int bitRate)

Provides functions for generating sound grains at specific bitrate

Parameters:

bitRate - Specific bitRate for sound grain generation: 11.025kHz - 44.1kHz

Method Detail

getBitRate

public int getBitRate()

Returns the bit rate of the sound grains. Should be the same as the bit rate of the GrainPlayer and MultiPlayer classes.

makeFadingSineWave

public float[] makeFadingSineWave(int bytes,
                                  int freq,
                                  float startAmp)

Generate sine wave that starts at given volume and then fades out

Parameters:

bytes - Length of the grain

freq - Frequency of the sine wave

startAmp - Starting amplitude of the wave

makeWhiteNoise

public float[] makeWhiteNoise(int bytes,
                              int freq,
                              float maxAmp)

Generate white noise at given frequency and amplitude

Parameters:

bytes - Length of the grain

freq - Frequency of the white noise

maxAmp - Maximum amplitude of the white noise