DirectAudioDevice.java 文件源码

private Gain() {

                super(FloatControl.Type.MASTER_GAIN,
                      Toolkit.linearToDB(0.0f),
                      Toolkit.linearToDB(2.0f),
                      Math.abs(Toolkit.linearToDB(1.0f)-Toolkit.linearToDB(0.0f))/128.0f,
                      -1,
                      0.0f,
                      "dB", "Minimum", "", "Maximum");
            }