Method pitch_synch_par_reset

extlibs/soloud/src/audiosource/speech/klatt.cpp:367–462

/* Reset selected parameters pitch-synchronously */

void klatt::pitch_synch_par_reset(int ns)
{	
	if (mF0FundamentalFreq > 0)
	{
		mT0 = (40 * mSampleRate) / mF0FundamentalFreq;

		/* Period in samp*4 */
		mAmpVoice = DBtoLIN(mVoicingAmpdb);

		/* Duration of period before amplitude modulation */
		mNMod = mT0;

		if (mVoicingAmpdb > 0)
		{
			mNMod >>= 1;
		}

		/* Breathiness of voicing waveform */

		mAmpBreth = DBtoLIN(mFrame.mVoicingBreathiness) * 0.1f;

		/* Set open phase of glottal period */
		/* where  40 <= open phase <= 263 */

		mNOpen = 4 * mFrame.mNoSamplesInOpenPeriod;

		if (mNOpen >= (mT0 - 1))
		{
			mNOpen = mT0 - 2;
		}

		if (mNOpen < 40)
		{
			mNOpen = 40;                  /* F0 max = 1000 Hz */
		}

		int temp;
		float temp1;

		temp = mSampleRate / mNOpen;
		mCritDampedGlotLowPassFilter.initResonator(0L, temp, mSampleRate);

		/* Make gain at F1 about constant */

		temp1 = mNOpen * .00833f;
		mCritDampedGlotLowPassFilter.setGain(temp1 * temp1);

		/* Truncate skewness so as not to exceed duration of closed phase
		of glottal period */

		temp = mT0 - mNOpen;

		if (mSkewnessOfAlternatePeriods > temp)
		{
			mSkewnessOfAlternatePeriods = temp;
		}

		if (mSkew >= 0)