Sub-band envelope approach to obtain instants of significant excitation in speech

Lakkavalli, Vikram Ramesh and Vijay Girish, KV and Ramakrishnan, AG (2012) Sub-band envelope approach to obtain instants of significant excitation in speech. In: 2012 National Conference on Communications (NCC), 3-5 Feb. 2012, Kharagpur.

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Abstract

In this paper, we propose a new sub-band approach to estimate the glottal activity. The method is based on the spectral harmonicity and the sub-band temporal properties of voiced speech. We propose a method to represent glottal excitation signal using sub-band temporal envelope. Instants of maximum glottal excitation or Glottal Closure Instants (GCI) are extracted from the estimated glottal excitation pattern and the result is compared with a standard GCI computation method, DYPSA [1]. The performance of the algorithm is also compared for the noisy signal and it is shown that the proposed method is less variant to GCI estimation under noisy conditions compared to DYPSA. The algorithm is evaluated on the CMU-ARCTIC database.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.
Keywords:	Glottal Closure Instant; Epoch; GCI; DYPSA; CMU-ARCTIC
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	02 Jul 2013 06:58
Last Modified:	02 Jul 2013 06:58
URI:	http://eprints.iisc.ac.in/id/eprint/46542

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