Results 51 to 60 of about 34,299,079 (141)

IP Controller Design for Uncertain Two-Mass Torsional System Using Time-Frequency Analysis

Shock and Vibration, 2018
With the development of industrial production, drive systems are demanded for larger inertias of motors and load machines, whereas shafts should be lightweight.
Jing Cui, Jiayu Ye, Zhongyi Chu
doaj   +1 more source

Time-Frequency Attention for Monaural Speech Enhancement

, 2022
Most studies on speech enhancement generally don't explicitly consider the energy distribution of speech in time-frequency (T-F) representation, which is important for accurate prediction of mask or spectra.
Ni, Z, Zhang, Q, Song, Q, Nicolson, A, Li, H   +4 more
core   +1 more source

Angles in the sagittal plane for the ankle, knee, and hip joints during level ground walking as the result of the modified computed muscle control simulation for one gait cycle for the contralateral leg of OI-TFA-1 (red) and OI-TFA-2 (blue), and for the right leg of AB-1 (black).

, 2023
Angles in the sagittal plane for the ankle, knee, and hip joints during level ground walking as the result of the modified computed muscle control simulation for one gait cycle for the contralateral leg of OI-TFA-1 (red) and OI-TFA-2 (blue), and for the ...
Vera G. M. Kooiman (9501365), Raffaella Carloni (17060962), Vishal Raveendranathan (17060959)   +2 more
core   +1 more source

The Application of Frequency Offset Advantage (FOA) in Frequency Coordination

, 1979
International Telemetering Conference Proceedings / November 19-21, 1979 / Town and Country Hotel, San Diego, CaliforniaA major telecommunications growth area at this time is narrowband digital transmissions via satellites.
Raghavan, Srini, Armes, Jerry
core   +4 more sources

Geometry-Based Synchrosqueezing S-Transform with Shifted Instantaneous Frequency Estimator Applied to Gearbox Fault Diagnosis

Sensors
This paper introduces a novel geometry-based synchrosqueezing S-transform (GSSST) for advanced gearbox fault diagnosis, designed to enhance diagnostic precision in both planetary and parallel gearboxes.
Xinping Zhu, Wuxi Shi, Zhongxing Huang, Liqing Shi   +3 more
doaj   +1 more source

Radar Waveform Recognition With ConvNeXt and Focal Loss

IEEE Access
A method of automatic recognition of radar waves based on time-frequency analysis (TFA) and ConvNeXt model is proposed in the paper. The method aims to address the challenges of feature extraction difficulty and low recognition correctness in complex ...
Liping Luo, Jie Huang, Yang Yang, Dexiu Hu   +3 more
doaj   +1 more source

Time-frequency analysis of atomic clock anomalies

, 2018
Atomic clocks are key elements in several applications, such as global navigation satellite systems. Monitoring their behavior is therefore fundamental. Since during an anomaly the frequency spectrum of the signal made by the clock frequency measurements
Galleani, Lorenzo, Lorenzo Galleani
core   +1 more source

The influence of prosthetic suspension on gait and cortical modulations is persons with a transfemoral amputation: socket-suspended versus bone-anchored prosthesis

Journal of NeuroEngineering and Rehabilitation
Background Persons with a transfemoral amputation (TFA) often experience difficulties in daily-life ambulation, including an asymmetrical and less stable gait pattern and a greater cognitive demand of walking.
Vera Kooiman, Joris van der Cruijsen, Ruud Leijendekkers, Nico Verdonschot, Teodoro Solis-Escalante, Vivian Weerdesteyn   +5 more
doaj   +1 more source

Novel Time-Interleaved Variable-Center Frequency Σ-∆ Modulators - Design, Analysis and Critical Evaluation

, 2013
This paper presents the design, analysis and system level modeling of two novel multi-path discrete-time Σ-∆ modulators that can accomplish noise-shaping for any center frequency from DC to Nyquist.
Kalafat Kizilkaya, I., Kale, I., Al-Janabi, M.   +2 more
core  

Time Series Analysis [PDF]

We provide a concise overview of time series analysis in the time and frequency domains, with lots of references for further reading.time series analysis, time domain, frequency ...
Marc Nerlove, Francis X. Diebold, Lutz Kilian   +2 more
core   +2 more sources