micromod
Class WaveScaler

java.lang.Object
  micromod.WaveScaler

public class WaveScaler

extends java.lang.Object

The WaveScaler class reduces the amplitude of audio. The idea is that this could be extended to provide a dithering algorithm in the future. This class only does some simple rounding at the moment.

Constructor Summary

WaveScaler()

Method Summary

void	scaleWaves(short[] inputBuffer, int[] outputBuffer, int length, int scale) Scale the amplitude of signed 16 bit audio in buffer.
void	scaleWavesAccumulate(short[] inputBuffer, int[] outputBuffer, int length, int scale) As scaleWaves(), except add the output values to those in outputBuffer, instead of overwriting them.

Methods inherited from class java.lang.Object

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

Constructor Detail

WaveScaler

public WaveScaler()

Method Detail

scaleWaves

public void scaleWaves(short[] inputBuffer,
                       int[] outputBuffer,
                       int length,
                       int scale)

Scale the amplitude of signed 16 bit audio in buffer. Perform the operation on indexes 0 to length-1.

Parameters:

inputBuffer - The audio input buffer.

outputBuffer - The audio output buffer.

length - The number of samples to scale.

scale - The amount to scale the audio by. This is in fixed point format, with 8192 representing a scale factor of 1.0. The maximum scale factor is 8.0

scaleWavesAccumulate

public void scaleWavesAccumulate(short[] inputBuffer,
                                 int[] outputBuffer,
                                 int length,
                                 int scale)

As scaleWaves(), except add the output values to those in outputBuffer, instead of overwriting them. This method is good for efficiency.