Cardiopulmonary and cardiovascular diseases are fatal factors that threaten human health
and cause many deaths worldwide each year, so it is essential to screen cardiopulmonary …

Abstract The Short-Time Fourier Transform (STFT) is widely used to convert signals from the
time domain into a time–frequency representation. This representation has well-known …

As a key parameter in blasting safety criteria, accurately describing the frequency's
characteristics is of practical significance. Due to the deficiency of Fourier transform in the …

As the core component of rotating machinery, the complex loads and sustained rotations in
the harsh conditions are prone to multiple faults. It is the primary researching that extracting …

In movie productions, the Foley artist is responsible for creating an overlay soundtrack that
helps the movie come alive for the audience. This requires the artist identify sounds that …

Neonatal infants communicate with us through cries. The infant cry signals have distinct
patterns depending on the purpose of the cries. Preprocessing, feature extraction, and …

Indirect methods to monitor the surface integrity of grinding wheels by acoustic emission
(AE) have been proposed, aiming to ensure their optimal performance. However, the time …

The study proposes a denoising method based on Complete Ensemble Empirical Mode
Decomposition with Adaptive Noise (CEEMDAN) and Wavelet packet threshold denoising …

This paper addresses the problem of estimating the parameters of adaptive directional time–
frequency distributions (ADTFDs). ADTFDs locally optimize the direction of the smoothing …

Videos are used widely as the media platforms for human beings to touch the physical
change of the world. However, we always receive the mixed sound from the multiple sound …