hashtags/lmms
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Wiki Activity

PeakControllerEffect: corrected calculation for RMS and moved loops out

Browse Source 
of if-branches - results however should be nearly the same but more accurate
and not negative
This commit is contained in:
Tobias Doerffel
2009-03-12 00:44:40 +01:00
parent e10de81df3
commit 3084b361ea
1 changed files with 8 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
plugins/peak_controller_effect/peak_controller_effect.cpp
View File

@@ -99,29 +99,22 @@ bool peakControllerEffect::processAudioBuffer( sampleFrame * _buf,
// RMS:
float sum = 0;
double sum = 0;
for( int i = 0; i < _frames; ++i )
{
sum += _buf[i][0]*_buf[i][0] + _buf[i][1]*_buf[i][1];
}
if( c.m_muteModel.value() )
{
for( int i = 0; i < _frames; ++i )
{
// is this really RMS???
sum += (_buf[i][0]+_buf[i][0]) * (_buf[i][1]+_buf[i][1]);
}
// eases vectorization
for( int i = 0; i < _frames; ++i )
{
_buf[i][0] = _buf[i][1] = 0.0f;
}
}
else
{
for( int i = 0; i < _frames; ++i )
{
sum += (_buf[i][0]+_buf[i][0]) * (_buf[i][1]+_buf[i][1]);
}
}
m_lastSample = c.m_baseModel.value() + c.m_amountModel.value() * sqrtf( 0.5f * sum / _frames );
m_lastSample = c.m_baseModel.value() + c.m_amountModel.value() *
sqrtf( sum / _frames );
//checkGate( out_sum / _frames );