Removing cepstrum

src/ITANCTC.cpp

@@ -262,36 +262,32 @@ bool ITANCTC::CalculateFilter( std::vector< ITAHDFTSpectra* >& vpCTCFilter )
 		// First, store original energy of HRTF (left channel)
 		float fEnergy = ( *pHRTF )[ 0 ]->getEnergy();
 		
-		// Apply WICK factor in cepstrum domain only on magnitudes (left channel)
-		( *pHRTF )[ 0 ]->log();
+		// Apply WICK factor only on magnitudes (left channel)
 		for( int i = 0; i < ( *pHRTF )[ 0 ]->getSize(); i++ )
 		{
-			float fCepstrumMag = ( *pHRTF )[ 0 ]->calcMagnitude( i );
-			( *pHRTF )[ 0 ]->setMagnitudePreservePhase( i, fCepstrumMag * m_fWaveIncidenceAngleCompensationFactor );
+			float fMag = ( *pHRTF )[ 0 ]->calcMagnitude( i );
+			( *pHRTF )[ 0 ]->setMagnitudePreservePhase( i, std::powf( fMag, m_fWaveIncidenceAngleCompensationFactor ) );
 		}
-		( *pHRTF )[ 0 ]->exp();
 
 		// Compensate initial HRTF energy when WICK is used (left channel)
 		assert( fEnergy > 0 );
-		float fEnergyCompensation = powf( fEnergy, ( 1 - m_fWaveIncidenceAngleCompensationFactor ) );
+		float fEnergyCompensation = std::powf( fEnergy, ( 1 - m_fWaveIncidenceAngleCompensationFactor ) );
 		( *pHRTF )[ 0 ]->mul( fEnergyCompensation );
 
 
 		// First, store original energy of HRTF only on magnitudes (right channel)
 		fEnergy = ( *pHRTF )[ 1 ]->getEnergy();
 
-		// Apply WICK factor in cepstrum domain (right channel)
-		( *pHRTF )[ 1 ]->log();
+		// Apply WICK factor only on magnitude (right channel)
 		for( int i = 0; i < ( *pHRTF )[ 1 ]->getSize(); i++ )
 		{
-			float fCepstrumMag = ( *pHRTF )[ 1 ]->calcMagnitude( i );
-			( *pHRTF )[ 1 ]->setMagnitudePreservePhase( i, fCepstrumMag * m_fWaveIncidenceAngleCompensationFactor );
+			float fMag = ( *pHRTF )[ 1 ]->calcMagnitude( i );
+			( *pHRTF )[ 1 ]->setMagnitudePreservePhase( i, std::powf( fMag, m_fWaveIncidenceAngleCompensationFactor ) );
 		}
-		( *pHRTF )[ 1 ]->exp();
 
 		// Compensate initial HRTF energy when WICK is used (right channel)
 		assert( fEnergy > 0 );
-		fEnergyCompensation = powf( fEnergy, ( 1 - m_fWaveIncidenceAngleCompensationFactor ) );
+		fEnergyCompensation = std::powf( fEnergy, ( 1 - m_fWaveIncidenceAngleCompensationFactor ) );
 		( *pHRTF )[ 1 ]->mul( fEnergyCompensation );