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1
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2 # Piper
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3
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4 ## A protocol for driving audio feature extractors
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5
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6 Piper is a protocol for audio analysis and feature extraction. That
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7 is, the task of processing sampled audio data to produce descriptive
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8 output (measurements or semantic observations).
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9
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10 Piper defines a data schema and API that can be used for remote audio
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11 feature extraction services, or for feature extractors loaded directly
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12 into a host application.
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13
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14 Piper is intended to be used
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15
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16 * as a programmatic interface for audio analysis and feature
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17 extraction methods for web applications and servers
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18
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19 * to make [Vamp plugins](http://vamp-plugins.org), and feature
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20 extractors written in other languages such as Javascript, available
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21 through a service API or as loadable modules
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22
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23 The Piper schema is language- and serialisation-independent and the
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24 API is transport-independent. We provide initial implementations using
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25 JSON in Javascript and C++, and using Cap'n Proto in C++.
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26
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27 This repository contains the basic Piper schema. Implementations and
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28 utilities can be found in neighbouring repositories.
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29
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30 [](https://travis-ci.org/piper-audio/piper)
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31
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32 ## Authors and licensing
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33
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34 Piper was made by Lucas Thompson and Chris Cannam at the Centre for
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35 Digital Music, Queen Mary, University of London.
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36
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37 Copyright (c) 2015-2017 Queen Mary, University of London, provided
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38 under a BSD-style licence. See the file COPYING for details.
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39
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