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Murthy, A. S. N.
- Speech Enhancement by Cascaded Spectral Subtraction
Abstract Views :165 |
PDF Views:2
Authors
Affiliations
1 Department of Electronics & Communication Engineering, Gitam University, IN
2 Department of Electronics & Instrumentation, Gitam University, IN
1 Department of Electronics & Communication Engineering, Gitam University, IN
2 Department of Electronics & Instrumentation, Gitam University, IN
Source
Digital Signal Processing, Vol 3, No 5 (2011), Pagination: 188-191Abstract
The corruption of speech due to presence of additive background noise causes severe difficulties in communication. This paper presents a novel noise reduction technique based upon cascaded spectral subtraction and this is illustrated by conducting experiments in real-time noisy environments. The proposed technique is compared with the existing spectral subtraction technique, using both subjective and objective analysis assessment measures. Results are quoted and indicate that there is a significant increase in intelligibility and quality.Keywords
Spectral Subtraction, Cascaded Spectral Subtraction, Subjective Analysis, Objective Analysis.- Speech Enhancement Using Microphone Array Beamforming Techniques
Abstract Views :151 |
PDF Views:2
Authors
Affiliations
1 Department of Electronics & Communication Engineering, Gitam University, IN
2 Department of Electronics & Instrumentation, Gitam University, IN
1 Department of Electronics & Communication Engineering, Gitam University, IN
2 Department of Electronics & Instrumentation, Gitam University, IN
Source
Digital Signal Processing, Vol 3, No 7 (2011), Pagination: 335-343Abstract
In this paper multiple microphone array speech enhancement algorithms have been simulated using the matlab software. Under various noisy conditions the performances of the delay and sum and Griffiths-Jim beamforming methods have been tested by the subjective and objective analysis. From the results, more signal to noise ratio (SNR) available for Multichannel beamforming methods compared to single channel methods. Speech enhancement in noisy environments improves the quality and intelligibility of speech and reduces communication fatigue. It has applications in hands free communications such as in-car communications, personal voice communications etc.Keywords
Adaptive Beamformer, Delay and Sum, Microphone Array, Speech Enhancement, Spatial Filtering.- Simulation and Performance Analysis of Various Least Mean Square Algorithms for Speech Enhancement
Abstract Views :156 |
PDF Views:3
Authors
Affiliations
1 Department of ECE, GITAM, Visakhapatnam, IN
2 Department of ECE, BVRIT, Narsapur, IN
1 Department of ECE, GITAM, Visakhapatnam, IN
2 Department of ECE, BVRIT, Narsapur, IN