Earthquake onset detection using spectro-ratio on multi-threshold time-frequency sub-band.
Ali Gamal HafezTahir Abbas KhanTohru KohdaPublished in: Digit. Signal Process. (2009)
Keyphrases
- subband
- wavelet transform
- frequency domain
- onset detection
- wavelet packet
- filter bank
- image compression
- wavelet coefficients
- discrete wavelet transform
- high frequency
- multiresolution
- feature vectors
- bit rate
- lifting scheme
- wavelet domain
- locally adaptive
- wavelet decomposition
- low frequency
- low pass
- fourier transform
- frequency band
- spatial domain
- contourlet transform
- signal processing
- feature extraction
- image data
- multiscale