Patent
Method for analyzing a signal by wavelets
Jean-Marie Nicolas,Alain Lemer +1 more
TLDR
In this paper, the correlation is done both on the signals coming from the correlation at the previous step by the scale Φ O signal and on the signal coming from correlation at preceding step by signal Φ o.Abstract:
To analyze short-duration signals by means of an analysis using MARRAT's algorithm with the wavelets of DAUBECHIES, at each step the correlation is done both on the signals coming from the correlation at the previous step by the scale Φ O signal and on the signals coming from the correlation at the preceding step by the signal Φ O . Thus, at the stage p, there is obtained a homogeneous signal consisting of 2 p ×N p points of analysis. This makes it possible, in the method of analysis by wavelets, to obtain a depiction of the results having a homogeneous form making it easier to interpret them.read more
Citations
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Method and apparatus for compression using reversible wavelet transforms and an embedded codestream
TL;DR: In this paper, a reversible wavelet filter is used to generate coefficients from input data, such as image data, and an entropy coder performs entropy coding on the embedded codestream to produce the compressed data stream.
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TL;DR: In this paper, a real-time image streaming system based on wavelet base is described, which is based on the Pixels-On-Demand (POPSOD) architecture.
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Compression/decompression using reversible embedded wavelets
TL;DR: In this article, a reversible wavelet filter is used to generate coefficients from input data, such as image data, and an entropy coder performs entropy coding on the embedded codestream to produce the compressed data stream.
References
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Journal ArticleDOI
The 'neural' phonetic typewriter
TL;DR: A speaker-adaptive system that transcribes dictation using an unlimited vocabulary is presented that is based on a neural network processor for the recognition of phonetic units of speech.
Patent
Filter-subtract-decimate hierarchical pyramid signal analyzing and synthesizing technique
TL;DR: In this paper, a pyramid frequency analysis technique is presented in which an input sampled temporal signal is convolved with a spatially localized, gradual rolloff kernel weighting function, which is subtracted from the input signal in each pyramid stage prior to the convolved signal having its sample density decimated and applied as an input to the next pyramid stage.
Patent
Modular digital signal processing system
TL;DR: In this paper, a modular digital signal processor system for calculating wavelet-analysis transformations and wavelet synthesis transformations of one-dimensional numerical data and multidimensional numerical data for solving speech processing and other problems is presented.
Patent
Method of generating seismic wavelets using seismic range equation
TL;DR: In this article, a method of deterministically computer generating a model of a response voltage waveform of a seismic receiver employed in a seismic, particularly marine, data gathering system, the model incorporating factors that have been identified as significant contributions to amplitude, such as directivity, divergence, attenuation, interbed multiples, and transmissivity, is presented.
Patent
Method of processing geophysical data to compensate for earth filter attenuation
TL;DR: In this article, the received seismic traces were first compensated for the attenuation effects of the earth filter and the compensated seismic traces are then used to produce a close approximation of a zero-phase, band-limited output wavelet of the reflectivity of the geophysical formation under exploration.