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Details of Grant 

EPSRC Reference: GR/S75802/01
Title: Object-based Coding of Musical Audio
Principal Investigator: Plumbley, Professor M
Other Investigators:
Sandler, Professor M Davies, Professor M
Researcher Co-Investigators:
Project Partners:
Department: Sch of Electronic Eng & Computer Science
Organisation: Queen Mary University of London
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 2004 Ends: 30 November 2007 Value (£): 202,353
EPSRC Research Topic Classifications:
Digital Signal Processing Music & Acoustic Technology
EPSRC Industrial Sector Classifications:
Creative Industries
Related Grants:
Panel History:  
Summary on Grant Application Form
Current coding systems for musical audio tend to use transform coding or filterbanks, with bit allocation determined by psychophysical masking thresholds. A recent alternative approach is to decompose the signal Into a parametric encoding, consisting for example of sinusoids+noise or tonals+transients+residuals. In this project, we will develop a methodology for audio coding using higher-level sound objects , consisting of Individual notes or chords played by particular instruments. From a top-down direction, this will be based on our expertise on automatic music transcription. We will explore a range of alternative approaches using different levels of Information, down to sparse coding methods for grouping of low-level parametric coding objects. We will Initially investigate coding of simple monophonic (single-voice) musical audio, extending this work to single-instrument and smallgroup polyphonic musical audio as the project progresses. We will use MPEG-4 Structured Audio as our primary encoding format. While full objectbased coding of complex polyphonic audio scenes (such as a symphony orchestra) is still a long way off, this project is a first step towards this Important long-term goal.
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Project URL: http://c4dm.eecs.qmul.ac.uk/objectcoding/
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