Year: 2011
Type: dissertation
Abstract: This thesis discusses the development of amodified constant Q spectrogram representation which is invertible in a least-squares sense. A good quality inverse is possible because this modified transform method, unlike the usual sliding window constant Q spectrogram, does not discard any data samples when performing the variable length discrete Fourier transforms on the original signal. The development of a phase vocoder application using this modified technique is also discussed. It is shown that MCQS phase vocoding is not a trivial extension of the regular FFT-based phase vocoder algorithms and some of the mathematical subtleties related to phase reconstruction are addressed.
Author: Atul Ingle
Language: English
Topic: Music and Audio Processing
Subfield: Signal Processing
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2152067447