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Noise reduction using multi-channel FIR warped wiener filter
, Article 13th International Multi-Conference on Systems, Signals and Devices, SSD 2016, 21 March 2016 through 24 March 2016 ; 2016 , Pages 531-536 ; 9781509012916 (ISBN) ; Ghorshi, S ; Joorabchi, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2016
Abstract
Enhancing the speech quality is the aim of noise reduction techniques. In order to have a desirable speech signal, it is necessary to eliminate the hearing fatigue and enhance the quality and intelligibility of speech signal. The present of additive noise causes the signal to degrade where the noise reduction techniques intend to remove the effect of noise on speech signals. However, removing the noise should not harm the speech signal when the signal is going to be heard. In this regard, Wiener filter can be used to promote the quality and intelligibility of the noisy signals. This paper explores the performance of multi-channel Wiener filter accompanied by Warped FIR filter
Noise Reduction Using Frequency Warped FIR Filter
, M.Sc. Thesis Sharif University of Technology ; Ghorshi, Mohammad Ali (Supervisor)
Abstract
The objective of this thesis is to develop a speech enhancement technique that can be applied for enhancement of speech degraded by additive background noise. The important aim of speech enhancement is to get better result after transmission at the receiver side. Additive noise such as White Gaussian Noise, Street Noise, Babble Noise, etc, is one of the speech enhancement problems degrading the intelligibility and quality of the signal. The important applications for speech enhancement are VOIP, Telephone services, mobile telephony, hands free voice control, communication between pilot cockpit, etc. Wiener filters are the mostly used techniques to reduce the uncorrelated additive noise with...
A distributed load balancing method for IoT/Fog/Cloud environments with volatile resource support
, Article Cluster Computing ; Volume 27, Issue 4 , 2024 , Pages 4281-4320 ; 13867857 (ISSN) ; Rezaee, A ; Adabi, S ; Rahimabadi, A. M ; Rahmani, A. M ; Sharif University of Technology
2024
Abstract
In cloud/fog-based environments, resource management is an important and challenging process. The deadline-based workflow scheduling mechanism is a common practice in such systems to overcome the complexities of resource management. However, many proposed approaches suffer from resource overloading/underloading, ignoring volunteer and volatile resources, and acting reactively. This paper presents a load-balancing method for IoT/Fog/Cloud environments integrated with local schedulers based on predicting workload and the presence of volatile mobile nodes (as dynamic resources). The proposed approach, firstly, turns the environment into a grid of equal-sized cells to reduce the system’s...
A simulated countercurrent moving bed reactor for oxidation of CO at low concentration over Pt/Al2O3
, Article Studies in Surface Science and Catalysis ; Volume 159 , 2006 , Pages 805-808 ; 01672991 (ISSN) ; Saito, Y ; Yotsumoto, T ; Kazemeini, M ; Aida, T ; Sharif University of Technology
Elsevier Inc
2006