Discrete-Time Fourier Transform (DTFT)
Four Particular Cases of the Fourier Transform
... defined Fourier transforms to one another, the integral Fourier transform, the Discrete-Time Fourier Transform (DTFT), the Discrete Fourier ...
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There Is Only One Fourier Transform
... one Fourier transform” ac- tually needs no ...the Fourier Series of a continuous func- tion and calculating its Fourier Transform? (2) What is the difference between ...
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Improved Computational Time for Circular / Linear Convolution using FFT by Matrix Multiplication
... Abstract – Matrix multiplication is a primary computation for several scientific computing, graphics processing units and engineering applications. Matrix multiplication is also use in convolution operation of two ...
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Review on FPGA based OFDM System Implementation using FFT
... calculate discrete Fourier transform there is an algorithm named as a fast Fourier transform ...a Fourier transform, conversion of time domain signal into frequency ...
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Coefficient-of-determination Discrete Fourier Transform
... perform Discrete Fourier Transforms (DFT) to convert temporal data into spectral ...the Fourier Transforms by studying the Coefficient of Determination of a series of artificial sinusoidal functions ...
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Complexity Analysis and Accuracy of Image Recovery Based on Signal Transformation Algorithms
... Fast Fourier transform (FFT), Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT), used in image ...or time domain to frequency domain for de-noising or ...
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Telugu Speech Enhancement In Terms Of Objective Quality Measures Using Discrete Wavelet Transform With Hybrid Thresholding
... is time domain approach and second one is transform domain ...In time domain approach, filtering is performed directly on the time ...the transform domain techniques, signals are first ...
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Effect of Secret Image Transformation on the Steganography Process by using LSB & DCT Techniques
... the time domain like least significant bit (LSB) substitution, phase coding ...other time domain image steganography schemes which hide secret data in the phase of the cover ...image. Transform ...
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Implementation and Contrasting Comparision of Transform Techniques of OFDM
... fast Fourier transform (FFT) is merely a rapid mathematical method for computer applications of ...long time to become a prominence has been ...the discrete Fourier spectrum exists only ...
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Monitoring the depth of anaesthesia using simplified electroencephalogram (EEG)
... fast Fourier transform (FFT) and filter bank are used to identify difference states of ...the time-frequency domain, discrete wavelet transforms (DWT) and power spectral density (PSD) function ...
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Relation between Type-II Discrete Sine Transform and Discrete Fourier Transform
... type-II discrete sine transform (DST-II) of even length N and N- point discrete Fourier transform (DFT) is ...inverse discrete sine transform (IDST) of even length N and ...
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Discrete Inequalities on LCT
... canonical transform (LCT) is widely used in physical optics, mathematics and information ...The discrete generalized uncertainty relation, whose bounds are related to LCT parameters and data lengths, is ...
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Eigenvectors of the Discrete Fourier Transform Based on the Bilinear Transform
... bilinear discrete equivalent to discretize the Hermite- Gaussian differential ...bilinear transform maps the analog domain to the discrete domain one-to-one, we find eigenvectors which are close to ...
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Watermarking of digital images with iris based biometric data using wavelet and SVD
... The technique employed has many factors that may affect the resulting watermarked image and the extracted watermark and its template matching with the signature data base. When the watermark is embedded in first level ...
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Hybrid Optical Cryptography and Compressive Sensing Based on Orthogonal Matching Pursuit
... fast transform such as discrete Fourier transform (DFT), discrete cosine transform (DCT), real sinusoidal transform (RST), Haar wavelet transform, Hadamard ...
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Identification of Fault in a Transmission Line by using Wavelet and Location by Fuzzy
... real time operation. The property of multi resolution in time and frequency using wavelets is found very effective for this ...real time digital relay applications, owing to its accuracy for fault ...
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Calculation Scheme Based on a Weighted Primitive: Application to Image Processing Transforms
... by an N × N matrix; therefore, the discrete Hartley transform is a linear operator. The matrix is invertible and the DHT is its own inverse up to an overall scale factor. This FHT al- gorithm, at least when ...
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Detection and Classification of EEG Waves
... In the late 1960’s, Blakemore and Campbell, two neurobiologists specialized in the field of vision, suggested that the neurons in the visual cortex might process spatial frequencies (periodic structures) instead of ...
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Replay attack detection with auditory filter-based relative phase features
... the Fourier transform based on a ...short time speech spectrum which may lose representation in vocal source information of the given speech [25, ...
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On semisimple algebra codes: generator theory
... seems natural to impose to the code some extra structure such as been a subalgebra of A. In this case we will have codes that have a Mattson-Solomon transform treatment as the classical cyclic codes. Moreover, the ...
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