This paper describes techniques for obtaining high accuracy estimates, including those of non-stationarity, of parameters for sinusoidal modelling using a single frame of analysis data. In this case the data used is generated from the time and frequency reassigned short-time Fourier transform (STFT). Such a system offers the potential for quasi real-time (frame-by-frame) spectral modelling of a...

In this paper we propose a method to estimate and transform harmonic components in wide-band conditions, out of a single period of the analyzed signal. This method allows estimating harmonic parameters with higher temporal resolution than typical Short Time Fourier Transform (STFT) based methods. We also discuss transformations and synthesis strategies in such context, focusing on the human voice.

Abstract Modern industrial process and household equipment more often use direct drives. According to European policy, Industry 4.0 new 5.0 need undertake the effort required ensure a sustainable, human-centric, resilient industry. One of main problems rotating machines is mechanical vibrations that can limit lifetime final product or machine in which they are applied. Therefore, analysis vibra...

S U M M A R Y Recent studies show that the frequency content of continuous passive recordings contains useful information for the study of hydraulic fracturing experiments as well as longstanding applications in volcano and global seismology. The short-time Fourier transform (STFT) is usually used to obtain the time–frequency representation of a seismic trace. Yet, this transform has two main d...

Location of non-stationary forced oscillation (FO) sources can be a challenging task, especially under resonance condition with natural system modes. In this case, the magnitudes oscillations could greater in places distant from source and spreads over large region power system. Detection, frequency identification filtering FO oscillatory components constitutes an initial critical step for appl...

This paper presents an advanced adaptive single-pole auto-reclosing (ASPAR) scheme based on harmonic characteristics of the secondary arc voltage. For analysis harmonics, short-time Fourier transform (STFT), which is a universal signal processing tool for transforming from time domain to frequency domain, utilized. STFT applied extract abnormal signature voltage waveform faulted phase when tran...

Abstract In modern drive systems, the high-efficient permanent magnet synchronous motors (PMSMs) have become one of most substantial components. Nevertheless, such machines are exposed to various types faults. Hence, on-line condition monitoring and fault diagnosis PMSMs necessary. One common PMSM faults is stator winding fault. Due destructive character this failure, it necessary use diagnosti...