Vamp Plugins Ontology Vamp Plugins Ontology Vamp Ontology. This ontology includes the following descriptions: - OWL description of the Vamp API - OWL description of the Transform environment necessary to set up the execution of any plugin This Ontology provides semantics to describe and control Vamp plugins in RDF. Any "RDF-speaker" host is therefore able to use this ontology to read, set up and execute plugins. The extracted features are expressed in terms of the Audio Features Ontology: http://purl.org/ontology/af/. For more information, please visit the Vamp Plugins website: http://www.vamp-plugins.org/ Chris Cannam Chris Sutton Yves Raimond David Pastor Escuredo $Date: 2008/05/21 17:05:11 $ Vamp Plugin A Vamp plugin is an implementation of an audio feature extraction algorithm using the Vamp API. stable Vamp Plugin Library Library of Vamp Plugins. This may need to include rights. stable Vamp Plugin Parameter Descriptor for a plugin parameter. Hosts need to know about the specific type and form of the parameters of a particular plugin for a correct transform setup. stable Quantized Parameter Descriptor of a parameter that does have quantized values. The property quantize_step is just defined for this subclass and not for the general Parameter. stable Vamp Plugin output descriptor Descriptor for an output of a plugin. This descriptor provides information that is necessary to correctly interpret the output features. The output type will determine how to read the temporal information of the extracted features and how to manage the burden of ouput data. unstable Quantized Output Descriptor of an output that does have quantized values. stable Known Extents Output Descriptor of an output that does have known extents. stable Dense output Specific output type for data evenly spaced in time, which may be of high volume and which it is usually desirable to represent in a compact form. unstable Sparse output Specific output type for data that consist of features that require their own individual temporal information. unstable track level output Specific output type for track level information. The Vamp API does not provide for this sort of output directly, so this will require a "hacky" interpretation of the feature timestamp to establish that it reflects track metadata instead of temporal data. unstable Plugin program The program is a predefined context of parameters. We may not need a concept for this and just a property linking a string representing the program name. unstable Vamp Feature This may be removed mighty soon as we rely on the Audio Features Ontology for this deprecated Plugin input domain Plugins declare the input domain they require, so the host can convert the input data properly. Hosts using the Vamp SDK PluginAdapter to wrap plugins should see this work done for them automatically - see the Vamp documentation. stable sample type The sample type specifies the temporal information of the plugin output. This information should be combined with the output type for a correct interpretation. stable parameter descriptor Links each parameter descriptor to the plugin. stable output Links each output type to the plugin. stable available plugin Available plugins in the library stable plugin identifier Machine-readable identifier for a Vamp plugin within the scope of its library, or for a plugin descriptor within the scope of the plugin. stable plugin name Human-readable identifier for the plugin. stable Vamp API version Version of the Vamp API used to implement this plugin. stable input domain Input domain required by the plugin (time or frequency). stable max value Maximum value of the parameter range unstable min value Minimum value of the parameter range unstable default value Default value of the parameter unstable quantized step Quantize step. Only defined for quantized outputs unstable has duration True if features on this output are known to have durations unstable unit Unit of the output/parameter. A string type unstable value names List of value names if available unstable fixed bin count Fixed bin count. A boolean type. unstable sample rate Sample rate of the output if any. Should be read depending on SampleType and Output classes. unstable bin count Number of elements of the bin output. This information is necessary to define the output as belonging to a specific subclass of Plugin Output. unstable bin names List of bin names if available. unstable sample type The sample type specifies the temporal information of the output. unstable event type Associates a plugin output with its corresponding event type (for example, in the Audio Features ontology). unstable feature type Associates a plugin output with the attribute connecting the event to its value data. unstable signal type Associates a dense plugin output with its corresponding signal type (for example, in the Audio Features ontology). unstable Transform stable The Transform defines the environment of any audio processing computation. Parameter binding unstable Parameter setting used by the plugin transform to set up the plugin. Configuration unstable For extension (key/value data provided to DSSI plugins, not relevant to Vamp) Transform Type unstable Specifies the type of transform. May be feature extraction, effect... Feature Extraction unstable Feature extraction transform. This may be just a subclass of Transform... Effect unstable Effect transform. This may be just a subclass of Transform... plugin stable Specifies the sort of plugin in execution. This is an extension to use Transform with other plugin libraries program stable Specifies the program to set the plugin in execution. Here the plugin program matches with the one in the plugin descriptor. There is not descriptor required for the program (just a string), is it? program stable Extension for configuration. parameter stable Specifies the parameter to set the plugin in execution. step size stable Specifies the step size for the framing. block size stable Specifies the block size for the framing. sample rate stable Specifies the sample rate if it is not constant. transform type unstable Specifies the transform type (we could do this by subclassin transform instead of using a property). window type unstable Specifies the window type (they should be individuals and clearly not here). start unstable Specifies temporal information when processing a data stream. start unstable Specifies temporal information when processing a data stream. summary type unstable Specifies a summary type to be used (for averaging etc) on transform results. value stable Specifies the current value of the parameter. computed by Associates an audio feature with the transform that was used to compute it. unstable