Voice/non-voice detection using phase of zero frequency filtered speech signal

Kumar, Sunil; Rao, K. Sreenivasa

doi:10.1016/j.specom.2016.01.008

Cited by 16 publications

(2 citation statements)

References 12 publications

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“…Proctoring, as a technology for monitoring and monitoring the process of online testing and exams, is coming to the fore as one of the answers to this need. This innovative practice, with the aim of preventing fraud and providing reliable student assessment, has become an integral part of the educational landscape [1].…”

Section: аннотация научная статья «применение технологий прокторинга ...mentioning

confidence: 99%

Application of Proctoring Technologies in Modern Education

Denissova,

Muratuly,

Tlebaldinova

et al. 2023

BEKTU

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The scientific article "The use of proctoring technologies in modern education" is a comprehensive analysis of modern approaches and trends in the use of proctoring technologies in educational institutions. In the light of dynamic changes in the educational process, especially in the context of the spread of distance learning, the relevance of effective methods of assessment and ensuring integrity becomes undeniable. The article covers a wide range of topics, including technical innovations in proctoring systems, the variability of methods (biometric data, audio and video surveillance, etc.), the ethical aspects of the use of such technologies, as well as the impact on the psychological aspect of learning and student outcomes.

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Section: аннотация научная статья «применение технологий прокторинга ...mentioning

confidence: 99%

Application of Proctoring Technologies in Modern Education

Denissova,

Muratuly,

Tlebaldinova

et al. 2023

BEKTU

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“…Therefore, to guarantee the consistency in the IMFs acquired through the EMD process, the randomly scattered extreme points must be filtered out. Notably, in this study, the phase shift information of the instantaneous frequency of the signals that cannot be generated by a filter is analyzed, and thus the zero-phase filtering method must be used [31,32]. Besides, Wave packet 1 of the health sensing signal with a center frequency of 100 kHz, shown in Figure 4bI, is used as an example.…”

Section: Application Analysis Of Marginal Spectrum Change In Plate St...mentioning

confidence: 99%

Application of Instantaneous Parameter Characteristic in Active Lamb Wave Based Monitoring of Plate Structural Health

Wang

et al. 2020

Applied Sciences

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In the active Lamb wave based monitoring of plate structural health, it is difficult to extract damage information from active Lamb waves based on single sensor collection. Based on the Hilbert–Huang transform (HHT) instantaneous processing method, this paper proposes to study the damage information carried by a single sensor monitoring signal from the instantaneous parameter characteristics of the signal. The instantaneous phase change caused by the phase difference between the damage scattering wave and the direct wave is studied. The change of the marginal spectrum amplitude in the effective range caused by the damage scattering wave is studied in continuous multiple frequency bands. Finally, the damage information extraction based on a single sensor monitoring signal is realized. From the model analysis and experimental results, it is reliable and feasible to realize the active Lamb wave based monitoring of plate structural health according to the instantaneous parameter change characteristics from a single sensor signal.

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