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author | cannam |
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date | Fri, 21 Nov 2008 12:48:18 +0000 |
parents | ff4600e08506 |
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33 <div class="oddcontent"><a name="amplitudefollower"></a><h2>1. Amplitude Follower</h2> | 33 <div class="oddcontent"><a name="amplitudefollower"></a><h2>1. Amplitude Follower</h2> |
34 | 34 |
35 <p><b>System identifier</b> – <code>vamp-example-plugins:amplitudefollower</code><br> | 35 <p><b>System identifier</b> – <code>vamp-example-plugins:amplitudefollower</code><br> |
36 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#amplitudefollower">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#amplitudefollower</a> | 36 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#amplitudefollower">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#amplitudefollower</a> |
37 <br><b>Links</b> – <a href="#">Back to top of library documentation</a> – <a href="http://sourceforge.net/project/showfiles.php?group_id=192001&package_id=225765">Download location</a> – <a href="http://vamp.svn.sourceforge.net/viewvc/vamp/vamp-plugin-sdk/trunk/examples/AmplitudeFollower.cpp?view=markup">Source code</a> | |
37 </p> | 38 </p> |
38 <p>Amplitude Follower tracks and returns the amplitude of the audio | 39 <p>Amplitude Follower tracks and returns the amplitude of the audio |
39 signal sample by sample, returning peak values block by block. | 40 signal sample by sample, returning peak values block by block. |
40 </p> | 41 </p> |
41 </div><div class="evencontent"><a name="toc2"></a><h3>1.1. Parameters</h3> | 42 </div><div class="evencontent"><a name="toc2"></a><h3>1.1. Parameters</h3> |
68 </p> | 69 </p> |
69 </div><div class="evencontent"><a name="fixedtempo"></a><h2>2. Simple Fixed Tempo Estimator</h2> | 70 </div><div class="evencontent"><a name="fixedtempo"></a><h2>2. Simple Fixed Tempo Estimator</h2> |
70 | 71 |
71 <p><b>System identifier</b> – <code>vamp-example-plugins:fixedtempo</code><br> | 72 <p><b>System identifier</b> – <code>vamp-example-plugins:fixedtempo</code><br> |
72 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#fixedtempo">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#fixedtempo</a> | 73 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#fixedtempo">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#fixedtempo</a> |
74 <br><b>Links</b> – <a href="#">Back to top of library documentation</a> – <a href="http://sourceforge.net/project/showfiles.php?group_id=192001&package_id=225765">Download location</a> – <a href="http://vamp.svn.sourceforge.net/viewvc/vamp/vamp-plugin-sdk/trunk/examples/FixedTempoEstimator.cpp?view=markup">Source code</a> | |
73 </p> | 75 </p> |
74 <p>Simple Fixed Tempo Estimator analyses a fragment of audio and | 76 <p>Simple Fixed Tempo Estimator analyses a fragment of audio and |
75 estimates its tempo. It assumes that its input is of fixed tempo, and | 77 estimates its tempo. It assumes that its input is of fixed tempo, and |
76 it analyses only the first (small but configurable number of) seconds | 78 it analyses only the first (small but configurable number of) seconds |
77 before returning a result, discarding all subsequent input. | 79 before returning a result, discarding all subsequent input. |
161 </p> | 163 </p> |
162 </div><div class="oddcontent"><a name="percussiononsets"></a><h2>3. Simple Percussion Onset Detector</h2> | 164 </div><div class="oddcontent"><a name="percussiononsets"></a><h2>3. Simple Percussion Onset Detector</h2> |
163 | 165 |
164 <p><b>System identifier</b> – <code>vamp-example-plugins:percussiononsets</code><br> | 166 <p><b>System identifier</b> – <code>vamp-example-plugins:percussiononsets</code><br> |
165 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#percussiononsets">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#percussiononsets</a> | 167 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#percussiononsets">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#percussiononsets</a> |
168 <br><b>Links</b> – <a href="#">Back to top of library documentation</a> – <a href="http://sourceforge.net/project/showfiles.php?group_id=192001&package_id=225765">Download location</a> – <a href="http://vamp.svn.sourceforge.net/viewvc/vamp/vamp-plugin-sdk/trunk/examples/PercussionOnsetDetector.cpp?view=markup">Source code</a> | |
166 </p> | 169 </p> |
167 <p>Simple Percussion Onset Detector estimates the locations of percussive | 170 <p>Simple Percussion Onset Detector estimates the locations of percussive |
168 onsets in the audio signal. | 171 onsets in the audio signal. |
169 </p> | 172 </p> |
170 <p>The principle is to exploit the broadband nature of noisy percussive | 173 <p>The principle is to exploit the broadband nature of noisy percussive |
210 </p> | 213 </p> |
211 </div><div class="oddcontent"><a name="powerspectrum"></a><h2>4. Simple Power Spectrum</h2> | 214 </div><div class="oddcontent"><a name="powerspectrum"></a><h2>4. Simple Power Spectrum</h2> |
212 | 215 |
213 <p><b>System identifier</b> – <code>vamp-example-plugins:powerspectrum</code><br> | 216 <p><b>System identifier</b> – <code>vamp-example-plugins:powerspectrum</code><br> |
214 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#powerspectrum">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#powerspectrum</a> | 217 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#powerspectrum">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#powerspectrum</a> |
218 <br><b>Links</b> – <a href="#">Back to top of library documentation</a> – <a href="http://sourceforge.net/project/showfiles.php?group_id=192001&package_id=225765">Download location</a> – <a href="http://vamp.svn.sourceforge.net/viewvc/vamp/vamp-plugin-sdk/trunk/examples/PowerSpectrum.cpp?view=markup">Source code</a> | |
215 </p> | 219 </p> |
216 <p>Simple Power Spectrum returns a power spectrum calculated from | 220 <p>Simple Power Spectrum returns a power spectrum calculated from |
217 windowed short-time Fourier transforms of the input audio. (The power | 221 windowed short-time Fourier transforms of the input audio. (The power |
218 spectrum for a frame consists of a sequence of the squares of the | 222 spectrum for a frame consists of a sequence of the squares of the |
219 magnitudes of the complex values for each frequency bin in the result | 223 magnitudes of the complex values for each frequency bin in the result |
243 </p> | 247 </p> |
244 </div><div class="oddcontent"><a name="spectralcentroid"></a><h2>5. Spectral Centroid</h2> | 248 </div><div class="oddcontent"><a name="spectralcentroid"></a><h2>5. Spectral Centroid</h2> |
245 | 249 |
246 <p><b>System identifier</b> – <code>vamp-example-plugins:spectralcentroid</code><br> | 250 <p><b>System identifier</b> – <code>vamp-example-plugins:spectralcentroid</code><br> |
247 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#spectralcentroid">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#spectralcentroid</a> | 251 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#spectralcentroid">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#spectralcentroid</a> |
252 <br><b>Links</b> – <a href="#">Back to top of library documentation</a> – <a href="http://sourceforge.net/project/showfiles.php?group_id=192001&package_id=225765">Download location</a> – <a href="http://vamp.svn.sourceforge.net/viewvc/vamp/vamp-plugin-sdk/trunk/examples/SpectralCentroid.cpp?view=markup">Source code</a> | |
248 </p> | 253 </p> |
249 <p>Spectral Centroid calculates the "centre of gravity" of the frequency | 254 <p>Spectral Centroid calculates the "centre of gravity" of the frequency |
250 spectrum for each input frame. | 255 spectrum for each input frame. |
251 </p> | 256 </p> |
252 </div><div class="evencontent"><a name="toc26"></a><h3>5.1. Parameters</h3> | 257 </div><div class="evencontent"><a name="toc26"></a><h3>5.1. Parameters</h3> |
272 </p> | 277 </p> |
273 </div><div class="evencontent"><a name="zerocrossing"></a><h2>6. Zero Crossings</h2> | 278 </div><div class="evencontent"><a name="zerocrossing"></a><h2>6. Zero Crossings</h2> |
274 | 279 |
275 <p><b>System identifier</b> – <code>vamp-example-plugins:zerocrossing</code><br> | 280 <p><b>System identifier</b> – <code>vamp-example-plugins:zerocrossing</code><br> |
276 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#zerocrossing">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#zerocrossing</a> | 281 <b>RDF URI</b> – <a href="http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#zerocrossing">http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#zerocrossing</a> |
282 <br><b>Links</b> – <a href="#">Back to top of library documentation</a> – <a href="http://sourceforge.net/project/showfiles.php?group_id=192001&package_id=225765">Download location</a> – <a href="http://vamp.svn.sourceforge.net/viewvc/vamp/vamp-plugin-sdk/trunk/examples/ZeroCrossing.cpp?view=markup">Source code</a> | |
277 </p> | 283 </p> |
278 <p>Zero Crossings calculates the positions and density of "zero-crossing" | 284 <p>Zero Crossings calculates the positions and density of "zero-crossing" |
279 points in an audio waveform. For the purposes of this plugin, that | 285 points in an audio waveform. For the purposes of this plugin, that |
280 means those positions at which the sampled value switches from | 286 means those positions at which the sampled value switches from |
281 zero-or-less to greater-than-zero, or vice versa. | 287 zero-or-less to greater-than-zero, or vice versa. |