Results 71 to 80 of about 26,801 (192)

A Machine Learning Approach for the Detection of QRS Complexes in Electrocardiogram (ECG) Using Discrete Wavelet Transform (DWT) Algorithm. [PDF]

Comput Intell Neurosci, 2022
Rizwan A, Priyanga P, Abualsauod EH, Zafrullah SN, Serbaya SH, Halifa A.   +5 more
europepmc   +1 more source

Human Face Recognition Using Wavelet Network

Al-Khawarizmi Engineering Journal, 2017
This paper presents a study of wavelet self-organizing maps (WSOM) for face recognition. The WSOM is a feed forward network that estimates optimized wavelet based for the discrete wavelet transform (DWT) on the basis of the distribution of the input data,
Dr. Tarik Zeyad
doaj  

Leg Motion Classification with Artificial Neural Networks Using Wavelet-Based Features of Gyroscope Signals

Sensors, 2011
We extract the informative features of gyroscope signals using the discrete wavelet transform (DWT) decomposition and provide them as input to multi-layer feed-forward artificial neural networks (ANNs) for leg motion classification.
Billur Barshan, Birsel Ayrulu-Erdem
doaj   +1 more source

Robust Digital Watermarking Technique for Satellite Images

Journal of Engineering and Sustainable Development, 2012
To overcome the copyright-protection issue, digital watermarking techniques have received considerable attentions and have been under development for several years.
Fatimah S. Abdulsattar
doaj  

Image Coding Using Wavelet Theory

Journal of Engineering and Sustainable Development, 2007
In this paper image coding for (Computer Generated Hologram) CGH technique, is investigated ideal analysis is undertaking to build and to constructed hologram by using wavelet theory and the images taking in to construction binary cell oriented ...
Mothana Amaar Hassan
doaj  

Detection and removal of “smacking” artefacts from lector speech records

Archives of Acoustics, 2014
In the paper, analysis of “smacking” artefacts, introduced to the speech signal by a lector, was shown. A working algorithm to reduce amount of smacks in the waveform was presented.
Marek Jaskuła, Hanna Perużyńska
doaj  

How hard is the euro area core? A wavelet analysis of growth cycles in Germany, France and Italy [PDF]

, 2006
Using recent advances in time-varying spectral methods, this research analyses the growth cycles of the core of the euro area in terms of frequency content and phasing of cycles.
Crowley, P. M., Maraun, Douglas, Mayes, D.   +2 more
core  

Evaluating The Performance of DWT-DCT Feature Extraction in Guitar Chord Recognition

International Journal of Applied Sciences and Smart Technologies
This study presents advancements in audio signal processing techniques, specifically in enhancing the efficiency of guitar chord recognition. It is a continuation of the previous studies, which also aim at minimizing the feature extraction length with ...
Linggo Sumarno
doaj   +1 more source

Bearing fault detection in a 3 phase induction motor using stator current frequency spectral subtraction with various wavelet decomposition techniques

Ain Shams Engineering Journal, 2018
Induction motors consumes 90% of total power consumed by industries due to large scale utilisation. Even though these motors are rugged in structure, they often face unexpected failure due to long usage without maintenance.
K.C. Deekshit Kompella, Mannam Venu Gopala Rao, Rayapudi Srinivasa Rao   +2 more
doaj   +1 more source

Signal-to-Noise Ratio Improvement based on the Discrete Wavelet Transform in Ultrasonic Defectoscopy

Acta Polytechnica, 2004
In ultrasonic testing it is very important to recognize the fault echoes buried in a noisy signal. The fault echo characterizes a flaw in the material.
V. Matz, M. Kreidl, R. Šmíd
doaj