A novel rail defect detection method based on undecimated lifting wavelet packet transform and Shannon entropy-improved adaptive line enhancer

Q Hao, X Zhang, Y Wang, Y Shen, V Makis - Journal of Sound and Vibration, 2018 - Elsevier
Acoustic emission (AE) technology is sensitive to subliminal rail defects, however strong
wheel-rail contact rolling noise under high-speed condition has gravely impeded detecting …

Transient modeling by matching pursuits with a wavelet dictionary for parametric audio coding

P Vera-Candeas, N Ruiz-Reyes… - IEEE Signal …, 2004 - ieeexplore.ieee.org
In this letter, we propose a novel matching pursuit-based method for transient modeling with
application to parametric audio coding. The overcomplete dictionary for the matching pursuit …

Novel wavelet domain Wiener filtering de-noising techniques: application to bowel sounds captured by means of abdominal surface vibrations

C Dimoulas, G Kalliris, G Papanikolaou… - … signal processing and …, 2006 - Elsevier
This work focuses on the design and evaluation of efficient and accurate de-noising
algorithms that combine robust signal enhancement and minimum signal distortion. The …

Auditory-motivated Gammatone wavelet transform

A Venkitaraman, A Adiga, CS Seelamantula - Signal Processing, 2014 - Elsevier
The ability of the continuous wavelet transform (CWT) to provide good time and frequency
localization has made it a popular tool in time–frequency analysis of signals. Wavelets …

Audio coding via EMD

AO Boudraa, K Khaldi, T Chonavel… - Digital Signal …, 2020 - Elsevier
In this paper an audio coding scheme based on the empirical mode decomposition in
association with a psychoacoustic model is presented. The principle of the method consists …

[КНИГА][B] Watermarking in audio: key techniques and technologies

X He - 2008 - books.google.com
The availability of increased computational power and the proliferation of the Internet have
facilitated the production and distribution of unauthorized copies of multimedia information …

An enhanced psychoacoustic model based on the discrete wavelet packet transform

X He, MS Scordilis - Journal of the Franklin Institute, 2006 - Elsevier
The perception of acoustic information by humans is based on the detailed temporal and
spectral analysis provided by the auditory processing of the received signal. The …

Wavelet-packet identification of dynamic systems in frequency subbands

HM Paiva, RKH Galvão - Signal processing, 2006 - Elsevier
This work presents a technique for linear system identification in frequency subbands by
using wavelet packets. The wavelet-packet decomposition tree is used to establish …

Adaptive Line Enhancer for Passive Sonars Based on Frequency-Domain Sparsity, Shannon Entropy Criterion and Mixed-Weighted Error

Z Li, Y Cheng, J Qiu - Arabian Journal for Science and Engineering, 2024 - Springer
Adaptive line enhancer (ALE) is one of the vital signal processing techniques to the
detection and recognition of underwater acoustic targets for passive sonars. Conventional …

Adaptive signal modeling based on sparse approximations for scalable parametric audio coding

NR Reyes, PV Candeas - IEEE Transactions on audio, speech …, 2009 - ieeexplore.ieee.org
This paper deals with the application of adaptive signal models for parametric audio coding.
A fully parametric audio coder, which decomposes the audio signal into sinusoids, transients …