Wavelet

Other time-frequency-plane tiling than STFT, DWT, ConstantQ-Transform multiresolution STFT?

Other time-frequency-plane tiling than STFT, DWT, ConstantQ-Transform multiresolution STFT?
  1. What is the difference between STFT and wavelet transform?
  2. What is the main advantage of wavelet analysis over STFT?

What is the difference between STFT and wavelet transform?

In contrast to the standard STFT which uses a single window size, the wavelet transform (WT) uses short windows at high frequencies and long windows at low frequencies [21]. Wavelets rely on the use of a mother wavelet function that can be scaled and shifted, to correlate with the anomalies or events of the signals.

What is the main advantage of wavelet analysis over STFT?

Wavelet analysis overcomes the disadvantage of STFT since CWT uses a windowing technique with variable sized regions. Wavelet analysis allows the use of long time intervals where we want more precise low-frequency information, and shorter regions where we want high-frequency information.

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