* Add a more reliable transient detection mode, and make the mode selectable using OptionDetectorXXX flags -- the new method is the default * Band-limit transient detectors to avoid being distracted by inaudible garbage * Add a key-frame mapping facility for variable stretch ratio management during offline stretches
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rubber Band
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An audio time-stretching and pitch-shifting library.
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Copyright 2007-2010 Chris Cannam.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "AudioCurveCalculator.h"
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#include <iostream>
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namespace RubberBand
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{
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static const int MaxPerceivedFreq = 16000;
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AudioCurveCalculator::AudioCurveCalculator(Parameters parameters) :
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m_sampleRate(parameters.sampleRate),
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m_windowSize(parameters.windowSize)
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{
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recalculateLastPerceivedBin();
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}
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AudioCurveCalculator::~AudioCurveCalculator()
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{
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}
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void
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AudioCurveCalculator::setSampleRate(int newRate)
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{
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m_sampleRate = newRate;
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recalculateLastPerceivedBin();
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}
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void
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AudioCurveCalculator::setWindowSize(int newSize)
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{
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m_windowSize = newSize;
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recalculateLastPerceivedBin();
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}
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void
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AudioCurveCalculator::recalculateLastPerceivedBin()
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{
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if (m_sampleRate == 0) {
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m_lastPerceivedBin = 0;
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return;
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}
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m_lastPerceivedBin = ((MaxPerceivedFreq * m_windowSize) / m_sampleRate);
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if (m_lastPerceivedBin > m_windowSize/2) {
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m_lastPerceivedBin = m_windowSize/2;
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}
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}
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}
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