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Cumulative Impulse Strength for Epoch Extraction

Prathosh, AP and Sujith, P and Ramakrishnan, AG and Ghosh, Prasanta Kumar (2016) Cumulative Impulse Strength for Epoch Extraction. In: IEEE SIGNAL PROCESSING LETTERS, 23 (4). pp. 424-428.

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Official URL: http://dx.doi.org/10.1109/LSP.2016.2519500


Algorithms for extracting epochs or glottal closure instants (GCIs) from voiced speech typically fall into two categories: i) ones which operate on linear prediction residual (LPR) and ii) those which operate directly on the speech signal. While the former class of algorithms (such as YAGA and DPI) tend to be more accurate, the latter ones (such as ZFR and SEDREAMS) tend to be more noise-robust. In this letter, a temporal measure termed the cumulative impulse strength is proposed for locating the impulses in a quasi-periodic impulse-sequence embedded in noise. Subsequently, it is applied for detecting the GCIs from the inverted integrated LPR using a recursive algorithm. Experiments on two large corpora of speech with simultaneous electroglottographic recordings demonstrate that the proposed method is more robust to additive noise than the state-of-the-art algorithms, despite operating on the LPR.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Keywords: Cumulative impulse strength; epoch extraction; GCI detection; impulse tracking
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 23 Apr 2016 05:17
Last Modified: 23 Apr 2016 05:17
URI: http://eprints.iisc.ac.in/id/eprint/53679

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