Mercurial > hg > silvet
comparison src/EM.cpp @ 91:2b0818a1c058 bqvec
First bit of bqvec adaptation
author | Chris Cannam |
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date | Tue, 06 May 2014 13:49:52 +0100 |
parents | a6e136aaa202 |
children | 81eaba98985b |
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90:f1116eb464f9 | 91:2b0818a1c058 |
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20 #include <cstdlib> | 20 #include <cstdlib> |
21 #include <cmath> | 21 #include <cmath> |
22 | 22 |
23 #include <iostream> | 23 #include <iostream> |
24 | 24 |
25 #include <vector> | 25 #include "VectorOps.h" |
26 #include "Allocators.h" | |
26 | 27 |
27 using std::vector; | 28 using std::vector; |
28 using std::cerr; | 29 using std::cerr; |
29 using std::endl; | 30 using std::endl; |
31 | |
32 using namespace breakfastquay; | |
30 | 33 |
31 static double epsilon = 1e-16; | 34 static double epsilon = 1e-16; |
32 | 35 |
33 EM::EM() : | 36 EM::EM() : |
34 m_noteCount(SILVET_TEMPLATE_NOTE_COUNT), | 37 m_noteCount(SILVET_TEMPLATE_NOTE_COUNT), |
35 m_shiftCount(SILVET_TEMPLATE_MAX_SHIFT * 2 + 1), | 38 m_shiftCount(SILVET_TEMPLATE_MAX_SHIFT * 2 + 1), |
36 m_binCount(SILVET_TEMPLATE_HEIGHT), | 39 m_binCount(SILVET_TEMPLATE_HEIGHT), |
37 m_instrumentCount(SILVET_TEMPLATE_COUNT), | 40 m_sourceCount(SILVET_TEMPLATE_COUNT), |
38 m_pitchSparsity(1.1), | 41 m_pitchSparsity(1.1), |
39 m_sourceSparsity(1.3), | 42 m_sourceSparsity(1.3), |
40 m_lowestPitch(silvet_templates_lowest_note), | 43 m_lowestPitch(silvet_templates_lowest_note), |
41 m_highestPitch(silvet_templates_highest_note) | 44 m_highestPitch(silvet_templates_highest_note) |
42 { | 45 { |
43 m_pitches = V(m_noteCount); | 46 m_pitches = allocate<double>(m_noteCount); |
44 for (int n = 0; n < m_noteCount; ++n) { | 47 for (int n = 0; n < m_noteCount; ++n) { |
45 m_pitches[n] = drand48(); | 48 m_pitches[n] = drand48(); |
46 } | 49 } |
47 | 50 |
48 m_shifts = Grid(m_shiftCount); | 51 m_shifts = allocate_channels<double>(m_shiftCount, m_noteCount); |
49 for (int f = 0; f < m_shiftCount; ++f) { | 52 for (int f = 0; f < m_shiftCount; ++f) { |
50 m_shifts[f] = V(m_noteCount); | |
51 for (int n = 0; n < m_noteCount; ++n) { | 53 for (int n = 0; n < m_noteCount; ++n) { |
52 m_shifts[f][n] = drand48(); | 54 m_shifts[f][n] = drand48(); |
53 } | 55 } |
54 } | 56 } |
55 | 57 |
56 m_sources = Grid(m_instrumentCount); | 58 m_sources = allocate_channels<double>(m_sourceCount, m_noteCount); |
57 for (int i = 0; i < m_instrumentCount; ++i) { | 59 for (int i = 0; i < m_sourceCount; ++i) { |
58 m_sources[i] = V(m_noteCount); | |
59 for (int n = 0; n < m_noteCount; ++n) { | 60 for (int n = 0; n < m_noteCount; ++n) { |
60 m_sources[i][n] = (inRange(i, n) ? 1.0 : 0.0); | 61 m_sources[i][n] = (inRange(i, n) ? 1.0 : 0.0); |
61 } | 62 } |
62 } | 63 } |
63 | 64 |
64 m_estimate = V(m_binCount); | 65 m_estimate = allocate<double>(m_binCount); |
65 m_q = V(m_binCount); | 66 m_q = allocate<double>(m_binCount); |
66 } | 67 } |
67 | 68 |
68 EM::~EM() | 69 EM::~EM() |
69 { | 70 { |
70 } | 71 } |
135 | 136 |
136 for (int i = 0; i < m_binCount; ++i) { | 137 for (int i = 0; i < m_binCount; ++i) { |
137 m_estimate[i] = epsilon; | 138 m_estimate[i] = epsilon; |
138 } | 139 } |
139 | 140 |
140 for (int i = 0; i < m_instrumentCount; ++i) { | 141 for (int i = 0; i < m_sourceCount; ++i) { |
141 for (int n = 0; n < m_noteCount; ++n) { | 142 for (int n = 0; n < m_noteCount; ++n) { |
142 const double pitch = m_pitches[n]; | 143 const double pitch = m_pitches[n]; |
143 const double source = m_sources[i][n]; | 144 const double source = m_sources[i][n]; |
144 for (int f = 0; f < m_shiftCount; ++f) { | 145 for (int f = 0; f < m_shiftCount; ++f) { |
145 const double *w = templateFor(i, n, f); | 146 const double *w = templateFor(i, n, f); |
160 void | 161 void |
161 EM::maximisation(const V &column) | 162 EM::maximisation(const V &column) |
162 { | 163 { |
163 V newPitches(m_noteCount, epsilon); | 164 V newPitches(m_noteCount, epsilon); |
164 Grid newShifts(m_shiftCount, V(m_noteCount, epsilon)); | 165 Grid newShifts(m_shiftCount, V(m_noteCount, epsilon)); |
165 Grid newSources(m_instrumentCount, V(m_noteCount, epsilon)); | 166 Grid newSources(m_sourceCount, V(m_noteCount, epsilon)); |
166 | 167 |
167 for (int n = 0; n < m_noteCount; ++n) { | 168 for (int n = 0; n < m_noteCount; ++n) { |
168 | 169 |
169 const double pitch = m_pitches[n]; | 170 const double pitch = m_pitches[n]; |
170 | 171 |
171 for (int f = 0; f < m_shiftCount; ++f) { | 172 for (int f = 0; f < m_shiftCount; ++f) { |
172 | 173 |
173 const double shift = m_shifts[f][n]; | 174 const double shift = m_shifts[f][n]; |
174 | 175 |
175 for (int i = 0; i < m_instrumentCount; ++i) { | 176 for (int i = 0; i < m_sourceCount; ++i) { |
176 | 177 |
177 const double source = m_sources[i][n]; | 178 const double source = m_sources[i][n]; |
178 const double factor = pitch * source * shift; | 179 const double factor = pitch * source * shift; |
179 const double *w = templateFor(i, n, f); | 180 const double *w = templateFor(i, n, f); |
180 | 181 |
201 for (int n = 0; n < m_noteCount; ++n) { | 202 for (int n = 0; n < m_noteCount; ++n) { |
202 if (m_pitchSparsity != 1.0) { | 203 if (m_pitchSparsity != 1.0) { |
203 newPitches[n] = pow(newPitches[n], m_pitchSparsity); | 204 newPitches[n] = pow(newPitches[n], m_pitchSparsity); |
204 } | 205 } |
205 if (m_sourceSparsity != 1.0) { | 206 if (m_sourceSparsity != 1.0) { |
206 for (int i = 0; i < m_instrumentCount; ++i) { | 207 for (int i = 0; i < m_sourceCount; ++i) { |
207 newSources[i][n] = pow(newSources[i][n], m_sourceSparsity); | 208 newSources[i][n] = pow(newSources[i][n], m_sourceSparsity); |
208 } | 209 } |
209 } | 210 } |
210 } | 211 } |
211 | 212 |