FEAPI
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| FEAPI | |
| Developer: | G. Eisenberg, A. Lerch, R. Muller, K. Tanghe, G. Volpe |
|---|---|
| Latest release: | 1.0rc1 / June 20, 2005 |
| OS: | independent |
| Use: | Feature extraction |
| License: | BSD license |
| Website: | feapi.sourceforge.net |
Context
Audio analysis using machine learning methods for classification begins with an extraction of suitable features. Well-known methods for extraction of audio features are often re-implemented by many researchers working in the field of audio analysis. The low level feature extraction plugin API (FEAPI) provides a generic interface for audio feature extraction modules.
History
At the beginning of january 2005, Alexander Lerch posted a message on the music-ir mailing list with the idea (and a first draft) for a generic audio feature extraction plugin API, openly sollicitating feedback and collaboration from other R&D engineers working in this field. The idea was to make it an easy-to-use, open, platform-independent and very permissively licensed API that could be used as a common interface for all parties creating or using low-level audio feature extraction software modules.
Capabilities
The capabilities of FEAPI were defined[1] as:
- support for different and possibly varying sample rates of the extracted features
- support for multiple independent instances of each plugin
- support for multidimensional features
- push-style processing of audio buffers (data source can be anything: files, live streams, ...)
- support for sufficient timing information to allow synchronization of features with different sample rates
- support for the calculation of multiple features in one plugin, if required by the developer
- high probability of unique plugin identification by the host without a registration process
License
The FEAPI code is licensed under a BSD style license, which makes it usable in both open or closed source applications, commercial and non-commercial.
[edit] References
- ^ Alexander Lerch, Gunnar Eisenberg, Koen Tanghe: FEAPI: A Low Level Feature Extraction Plugin API, 8th International Conference on Digital Audio Effects (DAFx), Madrid, Spain, 2005
