A Data-Reduction Scheme for Wavetable Sound Synthesis
Date Issued
2004
Date
2004
Author(s)
Wu, Ming-Hsi
DOI
en-US
Abstract
Wavetable synthesis is straightforward in implementation but subtle in optimization. The main parameters of wavetable synthesis are extracted from a recorded tone. Selecting samples which can completely exhibit the varying characteristics of musical signal is the most important subject of this system.
Analysis/synthesis systems are often used for psychoacoustic research and music composition. They have been used in studies on instrument timbre to reduce sounds to basic elements and then synthesize sounds from these elements. We can then compare the synthesized sound to the original to determine if the basic elements completely describe the sound.
In this thesis we present a sound analysis and synthesis system that incorporates knowledge of the auditory system. It divides the input signal into frames and exhibits the evolution of timbre by a time-frequency representation. The spectrum variation can give guidance to understand the distribution of selected samples. The analysis/synthesis system is a power sound processing tool: it can deal with various music signals and find some “key frames”. When synthesizing, Phase Vocoder is applied to reconstructs the original signal.
Subjects
分析合成系統
波形表合成法
wavetable synthesis
analysis/synthesis system
Type
thesis
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