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Double Fourier analysis for Emotion Identification in Voiced Speech
(IOP PUBLISHING LTD, 2016-01-01)
We propose a novel analysis alternative, based on two Fourier Transforms for emotion recognition from speech. Fourier analysis allows for display and synthesizes different signals, in terms of power spectral density ...
Refractive index calculation from echo interference in pulsed terahertz spectroscopy
(Inst Engineering Technology-iet, 2014-02)
A method for calculating the average refractive index of a sample using transmission terahertz time-domain spectroscopy in a single measurement is presented. The refractive index is derived from the analysis of the ...
Impact of rainfall anomalies on Fourier parameters of NDVI time series of northwestern Argentina
(Taylor & Francis Ltd, 2008-02)
This paper describes a method to detect the impact of rainfall anomalies on vegetation phenology, in terms of timing (phase) and greenness, by using Fourier series to fit a time series of Normalized Difference Vegetation ...
Análisis de la difracción por elementos cuadradosDiffraction analysis for square elements
(Corporación Universidad de la Costa, 2019)
Improved decryption quality with a random reference beam cryptosystem
(Elsevier, 2019-01)
The secure managing of sensible data is one of the main challenges nowadays. During the last years several advances have demonstrated the ability of optical encrypting systems to protect information. In spite of these ...
Novel vortex-transform for high frequency modulated patterns
(Optical Society of America, 2013-10)
A novel vortex-transform is proposed. This transform allows for generating complex-valued functions from modulated intensity patterns, including high frequency components from modulation, without the generation of unstable ...
Fractional optical cryptographic protocol for data containers in a noise-free multiuser environment
(Elsevier, 2018-03)
Optical encryption systems have great potential for flexible and high-performance data protection, making them an area of rapid development. However, most approaches present two main issues, namely, the presence of speckle ...