High-Quality Time Stretch and Pitch Shift Effects for Speech and Audio Using the Instantaneous Harmonic Analysis. (30th November 2010)

• Record Type: Journal Article
• Authors: Azarov Azarov, Elias Elias; Petrovsky Petrovsky, Alexander Alexander; Parfieniuk Parfieniuk, Marek Marek
• Other Names: Zoelzer Zoelzer Udo Udo Academic Editor.
• Is Part Of: EURASIP journal on advances in signal processing. Volume 2010(2010)
• Publication Date: 2010-11-30
• Subjects: Signal processing -- Periodicals; Traitement du signal; Signal processing; Periodicals; 621.3822
• DOI: 10.1155/2010/712749
• Languages: English
• ISSNs: 1687-6172

Abstract

Abstract : The paper presents methods for instantaneous harmonic analysis with application to high-quality pitch, timbre, and time-scale modifications. The analysis technique is based on narrow-band filtering using special analysis filters with frequency-modulated impulse response. The main advantages of the technique are high accuracy of harmonic parameters estimation and adequate harmonic/noise separation that allow implementing audio and speech effects with low level of audible artifacts. Time stretch and pitch shift effects are considered as primary application in the paper.