Mercurial > hg > qm-dsp

diff dsp/tempotracking/TempoTrack.cpp @ 487:5998ee1042d3

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Use M_PI
author Chris Cannam <cannam@all-day-breakfast.com>
date Fri, 31 May 2019 16:33:55 +0100
parents 7e52c034cf62
children 103156707542
line wrap: on
line diff
--- a/dsp/tempotracking/TempoTrack.cpp	Fri May 31 16:33:46 2019 +0100
+++ b/dsp/tempotracking/TempoTrack.cpp	Fri May 31 16:33:55 2019 +0100
@@ -120,7 +120,7 @@
         for( i = 0; i < winLength; i++ ) {
             double dlag = (double)(i+1) - beatLag;
             Filter[ i ] =  exp(-0.5 * pow(( dlag / m_sigma), 2.0) ) /
-                (sqrt( 2 * PI) * m_sigma);
+                (sqrt(TWO_PI) * m_sigma);
         }
     }
 }
@@ -519,7 +519,7 @@
         double temp = 0.0;
 
         for(  int i = 0; i < scratchLength; i++ ) {
-            phaseScratch[ i ] = exp( -0.5 * pow( ( i - mu ) / sigma, 2 ) ) / ( sqrt( 2*PI ) *sigma );
+            phaseScratch[ i ] = exp( -0.5 * pow( ( i - mu ) / sigma, 2 ) ) / ( sqrt(TWO_PI) *sigma );
         }
 
         MathUtilities::getFrameMinMax( phaseScratch, scratchLength, &PhaseMin, &PhaseMax );