Results 11 to 20 of about 286,653 (257)

Robust Multipitch Analyzer against Initialization based on Latent Harmonic Allocation using Overtone Corpus [PDF]

open access: yesJournal of Information Processing, 2013
We present a Bayesian analysis method that estimates the harmonic structure of musical instruments in music signals on the basis of psychoacoustic evidence. Since the main objective of multipitch analysis is joint estimation of the fundamental frequencies and their harmonic structures, the performance of harmonic structure estimation significantly ...
Daichi Sakaue   +3 more
openaire   +5 more sources

Post-noon two-minute period pulsating aurora and their relationship to the dayside convection pattern [PDF]

open access: yesAnnales Geophysicae, 1999
Poleward-moving auroral forms, as observed by meridian-scanning photometers, in the vicinity of the cusp region are generally assumed to be the optical signature of flux transfer events.
S. E. Milan   +5 more
doaj   +1 more source

Borneo Lute ‘Sape’: The Frequency Spectrum and Time Frequency Analysis (TFA)

open access: yesBioResources, 2023
Sound elements were studied for a six strings sape, a traditional instrument. The frequency was evaluated using a frequency spectrum and a time frequency plane. PicoScope oscilloscopes and Adobe Audition version 3 were used to record the acoustic spectra.
Sinin Hamdan   +4 more
doaj   +2 more sources

Fast-individual-harmonic-extraction technique [PDF]

open access: yes, 2005
One outcome of a PhD project (C H Ng, University studentship) A collaborative work (the Energy Systems Group, Northumbria and Durham University). It deals with the problem of harmonic suppression or elimination in power systems for safety and power ...
Busawon, Krishna   +3 more
core   +1 more source

Detection of Ethanol Using a Tunable Interband Cascade Laser at 3.345 μm

open access: yesPhotonic Sensors, 2018
With the progress of the laser manufacturing technology, trace gas sensors based on tunable interband cascade lasers (ICLs) and quantum cascade lasers (QCLs) have been widely used to detect organic compounds with high sensitivity.
Hui Gao, Liang Xie, Ping Gong, Hui Wang
doaj   +1 more source

On the Ratio of Periods of the Fundamental Harmonic and First Overtone of Magnetic Tube Kink Oscillations [PDF]

open access: yesSolar Physics, 2016
We study kink oscillations of thin magnetic tubes. We assume that the density inside and outside the tube (and possibly also the cross-section radius) can vary along the tube. This variation is assumed to be of such a form that the kink speed is symmetric with respect to the tube centre and varies monotonically from the tube ends to the tube centre ...
Ruderman, M.S.   +2 more
openaire   +2 more sources

ON THE CONVERGENCE OF THE EULER HARMONIC SERIES [PDF]

open access: yes, 2000
The aim oj this article is to study the convergence oj the Euler harmonic series. Firstly, the results concerning the convergence oj the Smaralldache and Erdos harmonic junctions are reviewed Secondly, the Euler harmonic series is proved to be convergent
Tabirca, Tatiana, Tabirca, Sabin
core   +1 more source

Harmonic diffeomorphisms of noncompact surfaces and Teichmüller spaces [PDF]

open access: yes, 2002
Let g : M -> N be a quasiconformal harmonic diffeomorphism between noncompact Riemann surfaces M and N. In this paper we study the relation between the map g and the complex structures given on M and N.
Markovic, V. (Vladimir)   +1 more
core   +1 more source

Tremor analysis with wearable sensors correlates with outcome after thalamic deep brain stimulation

open access: yesClinical Parkinsonism & Related Disorders, 2020
Introduction: Thalamic deep brain stimulation (DBS) provides excellent tremor control in most patients with essential tremor (ET). However, not all tremor patients show clinically significant improvement after DBS surgery. Currently, there is no reliable
Dayle Rüegge   +7 more
doaj   +1 more source

Bechmann’s Number for Harmonic Overtones of Thickness-Shear Vibrations of Rotated Y-Cut Quartz Crystal Plates [PDF]

open access: yesCoatings, 2020
A procedure based on approximate solutions of three-dimensional equations of wave propagation is utilized for calculating Bechmann’s number for the harmonic overtones of thickness-shear modes in the rotated Y-cut quartz crystal plates. Bechmann’s number is used for the optimization and improvement of electrodes to yield superior performance in the ...
Han Zhang, Yumei Chen, Ji Wang
openaire   +1 more source

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