Galiana-Merino et al., 2003 - Google Patents
De-noising of short-period seismograms by wavelet packet transformGaliana-Merino et al., 2003
View PDF- Document ID
- 4973149863610547637
- Author
- Galiana-Merino J
- Rosa-Herranz J
- Giner J
- Molina S
- Botella F
- Publication year
- Publication venue
- Bulletin of the Seismological Society of America
External Links
Snippet
The wavelet packet transform gives information in both the time and frequency domains, and it is very useful for describing nonstationary signals like seismograms. Moreover, this structure is dependent on the signal under study; hence we can choose the time-frequency …
- 238000000354 decomposition reaction 0 abstract description 38
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING; COUNTING
- G06F—ELECTRICAL DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/141—Discrete Fourier transforms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING; COUNTING
- G06F—ELECTRICAL DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/30—Information retrieval; Database structures therefor; File system structures therefor
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00
- G10L25/90—Pitch determination of speech signals
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Galiana-Merino et al. | De-noising of short-period seismograms by wavelet packet transform | |
| Wang et al. | The unimportance of phase in speech enhancement | |
| Zhang et al. | Automatic P-wave arrival detection and picking with multiscale wavelet analysis for single-component recordings | |
| Abd El-Fattah et al. | Speech enhancement with an adaptive Wiener filter | |
| Liu et al. | Application of variational mode decomposition to seismic random noise reduction | |
| Sharma et al. | An empirical wavelet transform-based approach for cross-terms-free Wigner–Ville distribution | |
| JP2000105146A (en) | Method and apparatus for specifying sound in composite sound signal | |
| US5479440A (en) | Apparatus and method for impulsive noise cancellation | |
| US7482530B2 (en) | Signal processing apparatus and method, recording medium and program | |
| CN115700544A (en) | Chromatographic signal denoising method combining empirical mode decomposition and wavelet soft threshold | |
| US4535417A (en) | Method and apparatus for digital time-variant filtering | |
| Galiana-Merino et al. | SeismicWaveTool: Continuous and discrete wavelet analysis and filtering for multichannel seismic data | |
| Oskooi et al. | GPR noise reduction based on wavelet thresholdings | |
| CN106199532A (en) | Gpr Signal noise-reduction method based on mixing Fourier wavelet analysis | |
| KR20050049549A (en) | Signal filtering | |
| Li et al. | Desert seismic signal denoising by 2D compact variational mode decomposition | |
| Su et al. | Translation-invariant wavelet de-noising method with improved thresholding | |
| Galiana-Merino et al. | Wavelet transform methods for azimuth estimation in local three-component seismograms | |
| CN106291680A (en) | A kind of data low frequency continuation method | |
| CN112764108B (en) | Novel seismic data noise suppression algorithm based on improved empirical wavelet transformation | |
| Li et al. | Application of autoregressive extrapolation to seismic tomography | |
| Galiana-Merino et al. | Regularized deconvolution of local short-period seismograms in the wavelet packet domain | |
| US4972382A (en) | Time variant suppression of coherent noise signals in a seismic section | |
| Talbi | Electrocardiogram de-noising based on forward wavelet transform translation invariant application in bionic wavelet domain | |
| Arora et al. | Comparative analysis of advanced thresholding methods for Speech-Signal denoising |