| 1. |
- Balakrishna, L., et al.
(författare)
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Speech enhancement using ICA with Bessel features
- 2011
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Konferensbidrag (refereegranskat)abstract
- The Independent Component Analysis with Reference (ICA R) also called as constrained ICA (cICA) extracts only the desired source signals from the mixture of source signals by incorporating some prior information into the separation process. To overcome the problem of designing the reference signal when there is no prior information about the desired signal in the cICA, an improved method is proposed to use a different speech signal generated by the same physical source. The cICA is extended to use Bessel coefficients of the observed signals and the reference signal for processing as they converge faster than the other transformations. Since the Bessel functions provide the desired properties, efficient in representing speech signals, less memory storage they have been exploited in speech processing [1]. The results demonstrate the efficiency of the proposed method.
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| 2. |
- Khan, K., et al.
(författare)
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Requirement development life cycle : The industry practices
- 2011
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Konferensbidrag (refereegranskat)abstract
- Requirements engineering activities act as a backbone of software development. The more efforts devoted during requirements engineering activities guarantee a better software product. Appropriate selection of requirements has been a challenge for software industry. This selection will increase the probability of success of the software product. Each year many cases are registered against companies for not fulfilling product requirements appropriately. The product failure mostly depends on, either by missing important requirements or capturing irrelevant requirements. SDLC consists of stages where software starts from scratch to a refined product. Requirements Development Life cycle (RDLC) consists of stages where requirements gets initiated, raised, refined, forcefully changed, implemented and validated. The processes to capture requirements vary industry to industry. This paper presents several requirements engineering processes used during the development of requirements, in industry. These processes will identify appropriate requirements and develop a quality product within budget on time. These practices are captured within the Pakistan software industry. This paper also explains the motivations for selecting particular methods, within company, during requirements development and the results associated with it. The processes captured in this paper, from different companies, can be an education for software industry.
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| 3. |
- Kumar, P.V.A., et al.
(författare)
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Bessel features for estimating number of speakers from multispeaker speech signals
- 2011
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Konferensbidrag (refereegranskat)abstract
- In this paper, we explore Bessel features to determine the number of speakers from multispeaker speech signals collected simultaneously from a pair of spatially separated microphones. The arrival of the speech signals from speaker to microphones gives the time delays of given speaker. The time delays can be estimated by performing the cross-correlation to the band limited multispeaker signals collected at the two microphones. Signals are band limited using a finite number of Bessel coefficients. The computer simulation results demonstrate the proposed method is efficient compared to existing methods.
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