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  • Review
  • Open Access
93 Views
13 Pages

Review of Trends in Wavelets with Possible Maritime Applications

  • Igor Vujović,
  • Joško Šoda and
  • Ivana Golub Medvešek
Signals2025, 6(4), 70;https://doi.org/10.3390/signals6040070 
(registering DOI)

1 December 2025

The wavelet transform (WT) is an integral transform primarily used for processing and analyzing nonstationary signals due to its multiresolution property. Multiresolution analysis is one method that finds applications in many fields because of the ch...

  • Technical Note
  • Open Access
87 Views
13 Pages
Signals2025, 6(4), 69;https://doi.org/10.3390/signals6040069 
(registering DOI)

1 December 2025

Second-order notch filters (NFs) with constant coefficients are often used as part of feedback controllers in grid-connected power conversion systems to prevent unwanted harmonic content polluting the closed control loops. In practice, the value of t...

  • Article
  • Open Access
151 Views
18 Pages
Signals2025, 6(4), 68;https://doi.org/10.3390/signals6040068 
(registering DOI)

1 December 2025

Muscle synergies offer valuable insights into the movement strategies employed by the central nervous system and present a promising avenue for clinical applications. However, the field lacks a complete understanding of how surface electromyography p...

  • Article
  • Open Access
425 Views
19 Pages

Real-Time Physiological Activity and Sleep State Monitoring System Using TS2Vec Embeddings and DBSCAN Clustering for Heart Rate and Motor Response Analysis in IoMT

  • Arifin Arifin,
  • Harmiati Harbi,
  • Andi Silvia Indriani,
  • Ida Laila,
  • Bualkar Abdullah,
  • Alridho,
  • Irfan Idris and
  • Jalu Ahmad Prakosa

17 November 2025

Monitoring physiological activity and sleep states in real time is challenging, particularly for continuous assessment in daily life settings using wearable IoMT devices. We developed a 24 h wearable system that integrates electrocardiogram (ECG) ele...

  • Article
  • Open Access
293 Views
22 Pages

Radar Foot Gesture Recognition with Hybrid Pruned Lightweight Deep Models

  • Eungang Son,
  • Seungeon Song,
  • Bong-Seok Kim,
  • Sangdong Kim and
  • Jonghun Lee

13 November 2025

Foot gesture recognition using a continuous-wave (CW) radar requires implementation on edge hardware with strict latency and memory budgets. Existing structured and unstructured pruning pipelines rely on iterative training–pruning–retrain...

  • Article
  • Open Access
336 Views
25 Pages

Universal Digital Calibration of Mismatched DACs: Enabling Sub-0.02 mm2 Area with Redundancy and Segmented Correction

  • Ekaniyere Oko-Odion,
  • Isaac Bruce,
  • Emmanuel Nti Darko,
  • Matthew Crabb and
  • Degang Chen

12 November 2025

This paper presents a novel methodology for the design and calibration of ultra-compact digital-to-analog converters (DACs), integrating architectural redundancy and a digital calibration algorithm. The proposed calibration approach generates pre-dis...

  • Article
  • Open Access
519 Views
24 Pages

7 November 2025

We propose a novel hybrid deep learning framework that synergistically integrates Convolutional Neural Networks (CNNs), Spiking Neural Networks (SNNs), and Generative Adversarial Networks (GANs) for robust and accurate classification of high-resoluti...

  • Article
  • Open Access
605 Views
19 Pages

4 November 2025

To address the demand for lightweight, high-precision, real-time, and low-computation detection of targets with limited samples—such as laboratory instruments in portable AR devices—this paper proposes a small dataset object detection alg...

  • Review
  • Open Access
955 Views
39 Pages

4 November 2025

An electrocardiogram (ECG) is a vital diagnostic tool that provides crucial insights into the heart rate, cardiac positioning, origin of electrical potentials, propagation of depolarization waves, and the identification of rhythm and conduction irreg...

  • Article
  • Open Access
575 Views
17 Pages

4 November 2025

Myocardial infarction (MI) remains one of the most critical causes of death worldwide, demanding predictive models that balance accuracy with clinical interpretability. This study introduces an explainable artificial intelligence (XAI) framework that...

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Signals - ISSN 2624-6120