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The Dirac-delta functions for signal path-loss modeling at mid-sized urban areas
(Institute of Electrical and Electronics Engineers Inc., 2014-09)
A study of the Dirac-Delta functions with polynomial argument for modeling the signal path-loss in mid-sized urban areas is presented. From the fundamental "spike" property of the Dirac-Delta functions, or simply Delta, ...
Multimodal signaling in Boana albopunctata (Anura: Hylidae): reading visual and acoustic cues
(Univ Sao Paulo, Esalq, 2020-12-01)
The acoustic mode of communication is important for anurans, but visual communication is beginning to be considered essential for some species, genera, and families. This study focuses on visual and acoustic signals in ...
Pitch detection algorithms based on zero-cross rate and autocorrelation function for musical notes
(2008-09-22)
This paper discusses two pitch detection algorithms (PDA) for simple audio signals which are based on zero-cross rate (ZCR) and autocorrelation function (ACF). As it is well known, pitch detection methods based on ZCR and ...
Pitch detection algorithms based on zero-cross rate and autocorrelation function for musical notes
(2008-09-22)
This paper discusses two pitch detection algorithms (PDA) for simple audio signals which are based on zero-cross rate (ZCR) and autocorrelation function (ACF). As it is well known, pitch detection methods based on ZCR and ...
Signal-flow graphs: Direct method of reduction and MATLAB implementation
(Institute of Electrical and Electronics Engineers (IEEE), 2001-05-01)
Block diagrams and signal-flow graphs are used to represent and to obtain the transfer function of interconnected systems. The reduction of signal-flow graphs is considered simpler than the reduction of block diagrams for ...
Signal-flow graphs: Direct method of reduction and MATLAB implementation
(Institute of Electrical and Electronics Engineers (IEEE), 2001-05-01)
Block diagrams and signal-flow graphs are used to represent and to obtain the transfer function of interconnected systems. The reduction of signal-flow graphs is considered simpler than the reduction of block diagrams for ...
Pilot tone aided measurements to extend the bandwidth of radio frequency applications
(Elsevier B.V., 2016)
A technique to extend the effective measurement bandwidth of a non-coherent vector receiver is presented. This bandwidth extension technique relies on the use of a pilot signal (known a priori), which is added on the signal ...
On the signal contribution function with respect to different norms
(John Wiley & Sons Ltd, 2021-07-10)
The signal contribution function (SCF) in multivariate curve resolution evaluates signal portions of specific components either in absolute or in relative form related to the integrated signal of all components. In 1999, ...
The chloride anion as a signalling effector
(Wiley Blackwell Publishing, Inc, 2019-10)
The specific role of the chloride anion (Cl−) as a signalling effector or second messenger has been increasingly recognized in recent years. It could represent a key factor in the regulation of cellular homeostasis. Changes ...
Wnt signaling modulates pre- and postsynaptic maturation: therapeutic considerations
(2010)
Wnt signaling regulates a wealth of aspects of nervous system development and function in embryonic stages and in adulthood. The expression of Wnt ligands and components of the Wnt signaling machinery in early stages of ...