Results 191 to 200 of about 10,051 (219)

STFT computation using pruned FFT algorithms

IEEE Signal Processing Letters, 1994
We show that the discrete short-time Fourier transform with temporal decimation (DSTFT-TD) can be evaluated using a variety of pruned FFT structures. A pruning method we refer to as overlap pruning can be used to eliminate computational overlap between consecutive FFT's for computing slices of the DSTFT-TD.
Demetrios E. Paneras, Ramamurthy Mani, S. Hamid Nawab   +2 more
openaire   +2 more sources

Bridging the gap between the short-time Fourier transform (STFT), wavelets, the constant-Q transform and multi-resolution STFT

Signal, Image and Video Processing, 2020
The short-time Fourier transform (STFT) is extensively used to convert signals from the time-domain into the time–frequency domain. However, the standard STFT has the drawback of having a fixed window size. Recently, we proposed a variant of that transform which fixes the window size in the frequency domain (STFT-FD).
Carlos Mateo 0001, Juan Antonio Talavera
openaire   +2 more sources

A higher order method for concentrating the STFT

SPIE Proceedings, 2005
We present a method for computing the theoretically exact estimate of the instantaneous frequency of a signal from local values of its short time Fourier transform under the assumption that the complex logarithm of the signal is a polynomial in time. We apply the method to the problem of estimating and separating non-stationary components of a multi ...
D. J. Nelson, D. C. Smith
openaire   +1 more source

Multichannel Noise Reduction in the STFT Domain

2015
In Chaps. 3 and 4, we exploited the temporal (and spectral) information from a single microphone signal to derive different techniques for noise reduction in the time and STFT domains. In this chapter, we exploit the spatial information available from signals picked up by a determined number of microphones at different positions in the acoustics space ...
Jacob Benesty, Jingdong Chen
openaire   +1 more source

Harmonic Analysis Using FFT and STFT

International Journal of Signal Processing, Image Processing and Pattern Recognition, 2014
Now a day’s Harmonic distortion has been a significant problem to maintain power quality. It is very essential to analyze of power signal and find different harmonics. Some harmonics in the power signals are harmful to sensitive equipments and also causes to power loss.
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Multichannel Signal Enhancement in the STFT Domain

2016
In Chapter , we exploited the temporal (and spectral) information from a single sensor signal to derive different variable span (VS) linear filters for noise reduction in the STFT domain. In this chapter, we exploit the spatial information available from signals picked up by a determined number of microphones at different positions in the acoustics ...
Jacob Benesty, Mads G. Christensen, Jesper R. Jensen   +2 more
openaire   +1 more source

Sparse Off-the-Grid Computation of the Zeros of STFT

IEEE Signal Processing Letters, 2023
Jean-Baptiste Courbot, Ali Moukadem, Bruno Colicchio, Alain Dieterlen   +3 more
openaire   +1 more source

Seizure Prediction in EEG Signals Using STFT and Domain Adaptation

Frontiers in Neuroscience, 2022
Haikun Wei
exaly  

STFT-BASED ECHO MUTER

2023
SHABESTARY TURAJ ZAKIZADEH, NARAYANAN ARUN   +1 more
openaire   +4 more sources

The STFT, Sinusoidal Models, and Speech Modification

2008
Frequency-domain signal representations are used for a wide variety of applications in speech processing. In this Chapter, we first consider the short-time Fourier transform (STFT), presenting a number of interpretations of the analysis-synthesis process in a consistent mathematical framework.
openaire   +1 more source