public DoubleDataSource process(DoubleDataSource inputAudio) {
amount = MathUtils.CheckLimits(amount, MIN_AMOUNT, MAX_AMOUNT);
double[] vscales = {amount};
int frameLength = SignalProcUtils.getDFTSize(fs);
int predictionOrder = SignalProcUtils.getLPOrder(fs);
VocalTractScalingProcessor p =
new VocalTractScalingProcessor(predictionOrder, fs, frameLength, vscales);
FrameOverlapAddSource foas =
new FrameOverlapAddSource(inputAudio, Window.HANNING, true, frameLength, fs, p);
return new BufferedDoubleDataSource(foas);
}
