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Time–frequency representation
timefrequency representation (TFR) is a view of a signal (taken to be a function of time) represented over both time and frequency. Timefrequency analysis
Time–frequency analysis
signal via a timefrequency transform. The mathematical motivation for this study is that functions and their transform representation are often tightly
Frequency domain
"spectrum" of frequency components is the frequency-domain representation of the signal. The inverse Fourier transform converts the frequency-domain function
Phase vocoder
frequency components of the sound, before resynthesis of the time-frequency domain representation into the time domain by the inverse STFT. The time evolution
Short-time Fourier transform
The short-time Fourier transform (STFT), is a Fourier-related transform used to determine the sinusoidal frequency and phase content of local sections
Time series
components change with time can be dealt with in time-frequency analysis which makes use of a timefrequency representation of a time-series or signal. Tools
Reassignment method
reassignment is a technique for sharpening a time-frequency representation by mapping the data to time-frequency coordinates that are nearer to the true region
Bilinear time–frequency distribution
Bilinear timefrequency distributions, or quadratic timefrequency distributions, arise in a sub-field of signal analysis and signal processing called time–frequency
Spectrogram
A spectrogram is a visual representation of the spectrum of frequencies of a signal as it varies with time. When applied to an audio signal, spectrograms
Wavelet transform
short-time Fourier transform. Wavelet Haar wavelet Daubechies wavelet Morlet wavelet Gabor wavelet Chirplet transform Time-frequency representation S transform