public PcmFormat(PcmFormat rhs)
{
NumChannels = rhs.NumChannels;
ChannelId = rhs.ChannelId;
SampleRate = rhs.SampleRate;
NumSamples = rhs.NumSamples;
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
var r = new PcmFormat(inputFormat);
r.SampleRate *= Factor;
r.NumSamples *= Factor;
return r;
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
var r = new PcmFormat(inputFormat);
r.SampleRate *= Factor;
r.NumSamples *= Factor;
return(r);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mPcmFormat = new PcmFormat(inputFormat);
mFftLength = WWUtil.NextPowerOf2(mPcmFormat.SampleRate);
mOverlappedFft = new OverlappedFft(mFftLength);
return(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
SampleRate = inputFormat.SampleRate;
DesignCutoffFilter();
mIfftAddBuffer = null;
mFirstFilterDo = true;
return(new PcmFormat(inputFormat));
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
SampleRate = inputFormat.SampleRate;
mFilterFreq = ButterworthFilter.Design(SampleRate, CutoffFrequency, FFT_LEN, FilterSlopeDbOct);
mIfftAddBuffer = null;
mFirstFilterDo = true;
return(new PcmFormat(inputFormat));
}
private static PcmFormat FilterSetup(AudioData from, int ch, List <FilterBase> filters)
{
var fmt = new PcmFormat(from.meta.channels, ch, from.meta.sampleRate, from.meta.totalSamples);
foreach (var f in filters)
{
fmt = f.Setup(fmt);
}
return(fmt);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mInputPcmFormat = inputFormat;
var r = new PcmFormat(inputFormat);
r.SampleRate *= Factor;
r.NumSamples *= Factor;
mOutputPcmFormat = r;
SetupCoeffs();
return(r);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mInputPcmFormat = inputFormat;
var r = new PcmFormat(inputFormat);
r.SampleRate *= Factor;
r.NumSamples *= Factor;
mOutputPcmFormat = r;
DesignFreqFilter();
return(r);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
if (Int32.MaxValue <= inputFormat.NumSamples)
{
MessageBox.Show("Input PCM data is too long");
return(null);
}
/*
* ジッター発生の原理
* ①ジッターによって揺さぶられたクロックで時を刻む。
* ②①の各時刻について、音声信号の波高値をSincリサンプラーにより算出する。
*
* sampleRate == 96000 Hz
* jitterFrequency == 50 Hz
* jitterPicoseconds == 1 ps の場合
*
* サンプル位置posのθ= 2 * PI * pos * 50 / 96000 (ラジアン)
*
* サンプル間隔= 1/96000秒 = 10.4 μs
*
* 1ms = 10^-3秒
* 1μs= 10^-6秒
* 1ns = 10^-9秒
* 1ps = 10^-12秒
*
* 1psのずれ A サンプルのずれ
* ───────────── ＝ ─────────
* 10.4 μs(1/96000)sのずれ 1 サンプルのずれ
*
* 1psのサンプルずれA ＝ 10^-12 ÷ (1/96000) = 10^-12 * 96000 (サンプルのずれ)
*
* サンプルを採取する位置= pos + Asin(θ)
*/
mTotalSamples = inputFormat.NumSamples;
mSampleRate = inputFormat.SampleRate;
mSineJitterAmp = 1.0e-9 * SineJitterNanosec * inputFormat.SampleRate * Math.Sqrt(2);
mTpdfJitterAmp = 1.0e-9 * TpdfJitterNanosec * inputFormat.SampleRate * 2;
mRpdfJitterAmp = 1.0e-9 * RpdfJitterNanosec * inputFormat.SampleRate;
PrepareResamplePosArray(inputFormat.SampleRate, (int)inputFormat.NumSamples);
return(new PcmFormat(inputFormat));
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
if (inputFormat.NumChannels != mCoeffNumChannels)
{
MessageBox.Show("Crossfeed NumChannels Mismatch!");
return(null);
}
if (inputFormat.SampleRate != mCoeffSampleRate)
{
MessageBox.Show("Crossfeed SampleRate Mismatch! (among crossfeed coefficient file and input pcm file)");
return(null);
}
mNumSamples = inputFormat.NumSamples;
mNumChannels = inputFormat.NumChannels;
mChannelId = inputFormat.ChannelId;
mPcmAllChannels = new double[mNumChannels][];
return(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mInputPcmFormat = inputFormat;
var r = new PcmFormat(inputFormat);
r.SampleRate *= Factor;
r.NumSamples *= Factor;
mOutputPcmFormat = r;
SetupCoeffs();
return r;
}
public PcmFormat(PcmFormat rhs)
{
NumChannels = rhs.NumChannels;
ChannelId = rhs.ChannelId;
SampleRate = rhs.SampleRate;
NumSamples = rhs.NumSamples;
}
/// <summary>
/// perform setup task, set pcm format and returns output format
/// </summary>
/// <param name="inputFormat">input pcm format</param>
/// <returns>output pcm format</returns>
public virtual PcmFormat Setup(PcmFormat inputFormat)
{
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mMask = 0xffffff00U << (24 - TargetBitsPerSample);
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mPcmFormat = new PcmFormat(inputFormat);
mFftLength = WWUtil.NextPowerOf2(mPcmFormat.SampleRate);
mOverlappedFft = new OverlappedFft(mFftLength);
return inputFormat;
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
return(new PcmFormat(inputFormat));
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
DesignFilter();
return inputFormat;
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mNumSamples = inputFormat.NumSamples;
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mMask = 0xffffff00U << (24 - TargetBitsPerSample);
return(new PcmFormat(inputFormat));
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
if (inputFormat.NumChannels != mCoeffNumChannels) {
MessageBox.Show("Crossfeed NumChannels Mismatch!");
return null;
}
if (inputFormat.SampleRate != mCoeffSampleRate) {
MessageBox.Show("Crossfeed SampleRate Mismatch! (among crossfeed coefficient file and input pcm file)");
return null;
}
mNumSamples = inputFormat.NumSamples;
mNumChannels = inputFormat.NumChannels;
mChannelId = inputFormat.ChannelId;
mPcmAllChannels = new double[mNumChannels][];
return inputFormat;
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
SampleRate = inputFormat.SampleRate;
DesignCutoffFilter();
mIfftAddBuffer = null;
mFirstFilterDo = true;
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
SampleRate = inputFormat.SampleRate;
mFilterFreq = ButterworthFilter.Design(SampleRate, CutoffFrequency, FFT_LEN, FilterSlopeDbOct);
mIfftAddBuffer = null;
mFirstFilterDo = true;
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mInputPcmFormat = inputFormat;
var r = new PcmFormat(inputFormat);
r.SampleRate *= Factor;
r.NumSamples *= Factor;
mOutputPcmFormat = r;
DesignFreqFilter();
return r;
}
/// <summary>
/// perform setup task, set pcm format and returns output format
/// </summary>
/// <param name="inputFormat">input pcm format</param>
/// <returns>output pcm format</returns>
public virtual PcmFormat Setup(PcmFormat inputFormat)
{
return(new PcmFormat(inputFormat));
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
if (Int32.MaxValue <= inputFormat.NumSamples) {
MessageBox.Show("Input PCM data is too long");
return null;
}
/*
ジッター発生の原理
①ジッターによって揺さぶられたクロックで時を刻む。
②①の各時刻について、音声信号の波高値をSincリサンプラーにより算出する。
sampleRate == 96000 Hz
jitterFrequency == 50 Hz
jitterPicoseconds == 1 ps の場合
サンプル位置posのθ= 2 * PI * pos * 50 / 96000 (ラジアン)
サンプル間隔= 1/96000秒 = 10.4 μs
1ms = 10^-3秒
1μs= 10^-6秒
1ns = 10^-9秒
1ps = 10^-12秒
1psのずれ A サンプルのずれ
───────────── ＝ ─────────
10.4 μs(1/96000)sのずれ 1 サンプルのずれ
1psのサンプルずれA ＝ 10^-12 ÷ (1/96000) = 10^-12 * 96000 (サンプルのずれ)
サンプルを採取する位置= pos + Asin(θ)
*/
mTotalSamples = inputFormat.NumSamples;
mSampleRate = inputFormat.SampleRate;
mSineJitterAmp = 1.0e-9 * SineJitterNanosec * inputFormat.SampleRate * Math.Sqrt(2);
mTpdfJitterAmp = 1.0e-9 * TpdfJitterNanosec * inputFormat.SampleRate * 2;
mRpdfJitterAmp = 1.0e-9 * RpdfJitterNanosec * inputFormat.SampleRate;
PrepareResamplePosArray(inputFormat.SampleRate, (int)inputFormat.NumSamples);
return new PcmFormat(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
DesignFilter();
return(inputFormat);
}
public override PcmFormat Setup(PcmFormat inputFormat)
{
mNumSamples = inputFormat.NumSamples;
return(new PcmFormat(inputFormat));
}
private static PcmFormat FilterSetup(AudioData from, int ch, List<FilterBase> filters)
{
var fmt = new PcmFormat(from.meta.channels, ch, from.meta.sampleRate, from.meta.totalSamples);
foreach (var f in filters) {
fmt = f.Setup(fmt);
}
return fmt;
}
