Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14486
Title: Applications of analysis and synthesis techniques for complex sounds
Authors: ZHU XINGLEI
Keywords: sound synthesis, music streaming, packet error recovery, sound texture, linear predictive coding
Issue Date: 23-Dec-2004
Source: ZHU XINGLEI (2004-12-23). Applications of analysis and synthesis techniques for complex sounds. ScholarBank@NUS Repository.
Abstract: In this thesis we present two applications of sound modeling/synthesis in sound texture modeling and packet loss recovery. In both these applications we build model for specific kind of sounds and resynthesize the sounds. The modeling/synthesis process provides extreme low bit presentation of the sound and generates perceptual similar sounds.In sound texture modeling, we build a model for specific kind of sounds that contains a sequence of transients, such as fire burning sound. We use a Poisson distribution to simulate the occurrence of transients and time-frequency linear predictive coding to capture the time and frequency spectrum contour of each event. Another application of sound modeling/synthesis is the packet loss recovery. We improve the content based unequal error protection (C-UEP) scheme, which uses a percussive codebook to recover the lost packet contains percussive sounds.By independent component analysis we separate drum beats from the singing voice so that we can build a higher quality codebook and by codebook modeling we reduce the redundant information to only 1% of the previous C-UEP system.
URI: http://scholarbank.nus.edu.sg/handle/10635/14486
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