Rendering audio using expressive MIDI
Welburn, SJ and Plumbley, MD (2009) Rendering audio using expressive MIDI
Full text not available from this repository.Abstract
MIDI renderings of audio are traditionally regarded as lifeless and unnatural - lacking in expression. However, MIDI is simply a protocol for controlling a synthesizer. Lack of expression is caused by either an expressionless synthesizer or by the difficulty in setting the MIDI parameters to provide expressive output. We have developed a system to construct an expressive MIDI representation of an audio signal, i.e. an audio representation which uses tailored pitch variations in addition to the note base pitch parameters which audio-to-MIDI systems usually attempt. A pitch envelope is estimated from the original audio, and a genetic algorithm is then used to estimate pitch modulator parameters from that envelope. These pitch modulations are encoded in a MIDI file and rerendered using a sampler. We present some initial comparisons between the final output audio and the estimated pitch envelopes.
Item Type: | Conference or Workshop Item (UNSPECIFIED) | |||||||||
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Divisions : | Surrey research (other units) | |||||||||
Authors : |
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Date : | 1 December 2009 | |||||||||
Depositing User : | Symplectic Elements | |||||||||
Date Deposited : | 17 May 2017 13:21 | |||||||||
Last Modified : | 23 Jan 2020 18:30 | |||||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/838905 |
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