This paper discusses a hybrid audio synthesis method employing both additive synthesis and DPCM audio playback, and the implementation of a miniature synthesizer system that accepts MIDI as an input format. Additive synthesis is performed in the frequency domain using a weighted overlap-add filterbank, providing efficiency gains compared to previously known methods. The synthesizer system is implemented on an ultra-miniature, low-power, reconfigurable application specific digital signal processing platform. This low-resource MIDI synthesizer is suitable for portable, low-power devices such as mobile telephones and other portable communication devices. Several issues related to the additive synthesis method, DPCM codec design, and system tradeoffs are discussed.

Author: Tam, King
Affiliation: Dspfactory Ltd., Waterloo, Ontario, Canada
AES Convention: 117 (October 2004) Paper Number: 6202
Publication Date: October 1, 2004 Import into BibTeX
Session Subject: Music Synthesis; Audio Archiving, Storage, and Restoration: Content Management
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=12859

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