Title :
Morphing of transient sounds based on shift-invariant discrete wavelet transform and singular value decomposition
Author :
Wasim Ahmad;Huseyin Hacihabiboglu;Ahmet M. Kondoz
Author_Institution :
I-Lab/CCSR, University of Surrey, Guildford, GU2 7XH, United Kingdom
Abstract :
In this paper, a new morphing algorithm for transient sounds is introduced. Input sounds are first projected onto orthogonal bases from which intermediate or novel sounds can be generated. The proposed algorithm uses a shift invariant version of discrete wavelet transform and the singular value decomposition (SVD) to represent the input sound signals over a set of orthogonal bases. Interpolation is carried out between the weight vectors from the SVD to produce a new weight vector used for synthesising a new set of wavelet coefficients. The morphed sound is generated by taking the inverse discrete wavelet transform of the combined weighted bases. The proposed algorithm not only generates a range of new sounds, but also represents the input sounds in a more compact fashion.
Keywords :
"Discrete wavelet transforms","Singular value decomposition","Continuous wavelet transforms","Interpolation","Signal synthesis","Wavelet analysis","Character generation","Hybrid power systems","Prototypes","Wavelet coefficients"
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
2379-190X
DOI :
10.1109/ICASSP.2009.4959579