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Noise robustness in multi-level crossing interval based method of spectral estimation

Prabhavathy, AS and Sreenivas, TV (1992) Noise robustness in multi-level crossing interval based method of spectral estimation. In: Proceedings of the Fourth Australian International Conference on Speech Science and Technology, 1-3 Dec. 1992, Brisbane, Qld., Australia, pp. 118-123.

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Abstract

A new method of sinusoid estimation in noise using multi-level crossing interval information is presented. Using the statistics of level crossing intervals a sinusoid detection criterion is formulated and an expression for threshold SNR is derived for any single level. The analysis is extended to a pooled set of multi-level crossing intervals resulting in a better SNR threshold of detecting a sinusoid. It is demonstrated that the multi-level crossing information is more robust than single level crossing information and the robustness improves with increasing contribution from higher levels.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs Australian Speech Science and Technology.
Keywords: signal detection;spectral analysis
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 10 Jan 2008
Last Modified: 12 Jan 2012 07:01
URI: http://eprints.iisc.ernet.in/id/eprint/11131

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