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Multi-band Spectral Subtraction Based on Adaptive Noise Estimation and Spectral Floor Optimization

Published: 25 February 2022 Publication History

Abstract

Multi-band spectral subtraction improves speech quality in a non-stationary noise environment by using spectral over subtraction in multiple sub-bands. However, the noise estimated by voice activity detection is not accurate, and the residual noise can not be reduced to the greatest extent by using a fixed spectral floor factor under different noises. To solve the above problems, this paper introduces an adaptive noise estimation method instead of voice activity detection. At the same time, we use the corresponding spectral floor factor in different SNR to reduce the residual noise as much as possible and further improve the speech quality. Experimental results show that the proposed method can further improve the speech quality based on multi-band spectral subtraction.

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Cited By

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  • (2024)An Improved Spectral Subtraction Method for Eliminating Additive Noise in Condition Monitoring System Using Fiber Bragg Grating SensorsSensors10.3390/s2402044324:2(443)Online publication date: 11-Jan-2024

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        cover image ACM Other conferences
        AIPR '21: Proceedings of the 2021 4th International Conference on Artificial Intelligence and Pattern Recognition
        September 2021
        715 pages
        ISBN:9781450384087
        DOI:10.1145/3488933
        Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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        Publication History

        Published: 25 February 2022

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        Author Tags

        1. Adaptive noise estimation
        2. Multi-band spectral subtraction
        3. Spectral floor factor

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        • the Special project of science and technology foundation of the ministry of public security under Grant No. 2019GABJC41

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        • (2024)An Improved Spectral Subtraction Method for Eliminating Additive Noise in Condition Monitoring System Using Fiber Bragg Grating SensorsSensors10.3390/s2402044324:2(443)Online publication date: 11-Jan-2024

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