The Reassigned Bandwidth-Enhanced Method of Additive Synthesis

We introduce a highly manipulable, high fidelity additive sound model capable of representing transient sounds and sounds having significant nonsinusoidal energy. We represent sounds as a collection of bandwidth-enhanced partials having sinusoidal and noise-like characteristics. Partials are defined by a trio of synchronized breakpoint envelopes specifying the time-varying amplitude, center frequency, and noise content. Breakpoints for the partial envelopes are obtained by following ridges on a time-frequency surface computed by the method of reassignment. The Reassigned Bandwidth-Enhanced Model yields greater resolution in time and frequency than conventional additive techniques, and preserves noise-like and transient signals, even in modified reconstruction.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Fitz, Kelly Raymond

Contributors dc:contributor

• Haken, Lippold

• Physics, Acoustics

Language dc:language

eng

Identifier

(MiAaPQ)AAI9953014

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/81307