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Merge pull request #513 from diizy/wavetablesynth

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Wavetablesynth
This commit is contained in:
Tobias Doerffel
2014-03-26 13:03:10 +01:00
parent c00926e777 b272581632
commit 255b2a2f49
4 changed files with 90 additions and 45 deletions
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48
data/presets/Watsyn/Epic_lead.xpf Normal file
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21
data/presets/Watsyn/Phase_bass.xpf Normal file
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32
plugins/watsyn/Watsyn.cpp
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@@ -115,37 +115,41 @@ void WatsynObject::renderOutput( fpp_t _frames )
///////////// A-series /////////////////
// A2
sample_t A2_L = interpolate( m_A2wave[ static_cast<int>( m_lphase[A2_OSC] ) % WAVELEN ],
sample_t A2_L = m_A2wave[ static_cast<int>( m_lphase[A2_OSC] ) ] * m_parent->m_lvol[A2_OSC];
/*interpolate( m_A2wave[ static_cast<int>( m_lphase[A2_OSC] ) % WAVELEN ],
m_A2wave[ static_cast<int>( m_lphase[A2_OSC] + 1 ) % WAVELEN ],
fraction( m_lphase[A2_OSC] ) ) * m_parent->m_lvol[A2_OSC];
sample_t A2_R = interpolate( m_A2wave[ static_cast<int>( m_rphase[A2_OSC] ) % WAVELEN ],
fraction( m_lphase[A2_OSC] ) ) * m_parent->m_lvol[A2_OSC];*/
sample_t A2_R = m_A2wave[ static_cast<int>( m_rphase[A2_OSC] ) ] * m_parent->m_rvol[A2_OSC];
/*interpolate( m_A2wave[ static_cast<int>( m_rphase[A2_OSC] ) % WAVELEN ],
m_A2wave[ static_cast<int>( m_rphase[A2_OSC] + 1 ) % WAVELEN ],
fraction( m_rphase[A2_OSC] ) ) * m_parent->m_rvol[A2_OSC];
fraction( m_rphase[A2_OSC] ) ) * m_parent->m_rvol[A2_OSC];*/
// if phase mod, add to phases
if( m_amod == MOD_PM )
{
A1_lphase = fmodf( A1_lphase + A2_L * PMOD_AMT, WAVELEN );
while( A1_lphase < 0 ) A1_lphase += WAVELEN;
if( A1_lphase < 0 ) A1_lphase += WAVELEN;
A1_rphase = fmodf( A1_rphase + A2_R * PMOD_AMT, WAVELEN );
while( A1_rphase < 0 ) A1_rphase += WAVELEN;
if( A1_rphase < 0 ) A1_rphase += WAVELEN;
}
// A1
sample_t A1_L = interpolate( m_A1wave[ static_cast<int>( A1_lphase ) % WAVELEN ],
sample_t A1_L = interpolate( m_A1wave[ static_cast<int>( A1_lphase ) ],
m_A1wave[ static_cast<int>( A1_lphase + 1 ) % WAVELEN ],
fraction( A1_lphase ) ) * m_parent->m_lvol[A1_OSC];
sample_t A1_R = interpolate( m_A1wave[ static_cast<int>( A1_rphase ) % WAVELEN ],
sample_t A1_R = interpolate( m_A1wave[ static_cast<int>( A1_rphase ) ],
m_A1wave[ static_cast<int>( A1_rphase + 1 ) % WAVELEN ],
fraction( A1_rphase ) ) * m_parent->m_rvol[A1_OSC];
///////////// B-series /////////////////
// B2
sample_t B2_L = interpolate( m_B2wave[ static_cast<int>( m_lphase[B2_OSC] ) % WAVELEN ],
sample_t B2_L = m_B2wave[ static_cast<int>( m_lphase[B2_OSC] ) ] * m_parent->m_lvol[B2_OSC];
/*interpolate( m_B2wave[ static_cast<int>( m_lphase[B2_OSC] ) % WAVELEN ],
m_B2wave[ static_cast<int>( m_lphase[B2_OSC] + 1 ) % WAVELEN ],
fraction( m_lphase[B2_OSC] ) ) * m_parent->m_lvol[B2_OSC];
sample_t B2_R = interpolate( m_B2wave[ static_cast<int>( m_rphase[B2_OSC] ) % WAVELEN ],
fraction( m_lphase[B2_OSC] ) ) * m_parent->m_lvol[B2_OSC];*/
sample_t B2_R = m_B2wave[ static_cast<int>( m_rphase[B2_OSC] ) ] * m_parent->m_rvol[B2_OSC];
/*interpolate( m_B2wave[ static_cast<int>( m_rphase[B2_OSC] ) % WAVELEN ],
m_B2wave[ static_cast<int>( m_rphase[B2_OSC] + 1 ) % WAVELEN ],
fraction( m_rphase[B2_OSC] ) ) * m_parent->m_rvol[B2_OSC];
fraction( m_rphase[B2_OSC] ) ) * m_parent->m_rvol[B2_OSC];*/
// if crosstalk active, add a1
const float xt = m_parent->m_xtalk.value();
@@ -159,9 +163,9 @@ void WatsynObject::renderOutput( fpp_t _frames )
if( m_bmod == MOD_PM )
{
B1_lphase = fmodf( B1_lphase + B2_L * PMOD_AMT, WAVELEN );
while( B1_lphase < 0 ) B1_lphase += WAVELEN;
if( B1_lphase < 0 ) B1_lphase += WAVELEN;
B1_rphase = fmodf( B1_rphase + B2_R * PMOD_AMT, WAVELEN );
while( B1_rphase < 0 ) B1_rphase += WAVELEN;
if( B1_rphase < 0 ) B1_rphase += WAVELEN;
}
// B1
sample_t B1_L = interpolate( m_B1wave[ static_cast<int>( B1_lphase ) % WAVELEN ],

34
plugins/watsyn/Watsyn.h
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@@ -56,11 +56,11 @@
#define B2ROW 95
const int GRAPHLEN = 220;
const int WAVELEN = 4400;
const int GRAPHLEN = 220; // don't change - must be same as the size of the widget
const int WAVERATIO = WAVELEN / GRAPHLEN;
const int WAVERATIO = 25; // oversampling ratio
const int WAVELEN = GRAPHLEN * WAVERATIO;
const int PMOD_AMT = WAVELEN / 2;
const int MOD_MIX = 0;
@@ -107,34 +107,6 @@ private:
{
return s1 + ( s2 - s1 ) * x;
}
/*
// quick and dirty approximation of cubic interpolation
inline sample_t interpolate( sample_t s1, sample_t s2, float x )
{
const float x2 = powf( x, 2 );
const float x3 = powf( x, 3 );
const float m = s2 - s1;
return ( ( x3 * 2.0 - x2 * 3.0 + 1.0 ) * s1 ) +
( ( x3 * -2.0 + x2 * 3.0 ) * s2 ); +
( ( x + x3 * 2.0 - x2 * 3.0 ) * m );
}
*/
// more accurate cubic interpolation...
// consumes more cpu than ^ but doesn't bring a marked increase in sound quality IMO
/* inline sample_t interpolate( sample_t s0, sample_t s1, sample_t s2, sample_t s3, float x )
{
const float x2 = powf( x, 2 );
const float x3 = powf( x, 3 );
const float m1 = ( s2 - s0 ) / 2;
const float m2 = ( s3 - s1 ) / 2;
return ( ( x3 * 2.0 - x2 * 3.0 + 1.0 ) * s1 ) +
( ( x3 * -2.0 + x2 * 3.0 ) * s2 ) +
( ( x3 - x2 * 2 + x ) * m1 ) +
( ( x3 - x2 ) * m2 );
}*/
int m_amod;
int m_bmod;