Spectrum Analysis Of Speech Signals Using Fast Fourier Transform

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Spectrum Analysis Of Speech Signals Using Fast Fourier Transform

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Author : Chee Kong Chew
language : en
Publisher:
Release Date : 1987

Spectrum Analysis Of Speech Signals Using Fast Fourier Transform written by Chee Kong Chew and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.

Digital Signal Processing Using The Fast Fourier Transform Fft

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Author : Albert H. Kaiser
language : en
Publisher: GRIN Verlag
Release Date : 2007-12

Digital Signal Processing Using The Fast Fourier Transform Fft written by Albert H. Kaiser and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12 with Technology & Engineering categories.

Seminar paper from the year 1997 in the subject Technology, grade: 1 (A), Loughborough University (Department of Aeronautical and Automotive Engineering), language: English, abstract: Conventionally a signal is a physical variable that changes with time and contains information. The signal may be represented in analogue (continuos) or discrete (digital) form. The majority of the physical variables of interest for the engineer are of analogue form. However digital data acquisition equipment favour a digital representation of the analogue signal. The digital representation of a analogue signal will effect the characteristic of the signal. Thus an understanding of the underlying principles involved in signal processing is essential in order to retain the basic information of the original signal. The primary goal to use the Discrete Fourier Transform (DFT) is to approximate the Fourier Transform of a continuous time signal. The DFT is discrete in time and frequency domain and has two important properties: - the DFT is periodic with the sampling frequency - the DFT is symmetric about the Nyquist frequency Due to the limitations of the DFT there are three possible phenomena that could result in errors between computed and desired transform. - Aliasing - Picket Fence Effect - Leakage The DFT of a signal uses only a finite record length of the signal. Thus the input signal for the DFT can be considered as the result of multiplying the signal with a window function. Multiplication in the time domain results in convolution in the frequency domain, which will influence the spectral characteristic of the sampled signal. In the table below rectangular and Hanning window are compared: [...] Table The Fast Fourier Transform (FFT) is a computationally efficient algorithm for evaluating the DFT of a signal. It is imported to appreciate the properties of the FFT if it is to be used effectively for the analysis of signals. In order to avoid aliasing and resulting misi

The Fast Fourier Transform And Its Applications

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Author : E. Oran Brigham
language : en
Publisher: Pearson
Release Date : 1988

The Fast Fourier Transform And Its Applications written by E. Oran Brigham and has been published by Pearson this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Mathematics categories.

The Fast Fourier Transform (FFT) is a mathematical method widely used in signal processing. This book focuses on the application of the FFT in a variety of areas: Biomedical engineering, mechanical analysis, analysis of stock market data, geophysical analysis, and the conventional radar communications field.

Digital Spectral Analysis

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Author : S. Lawrence Marple, Jr.
language : en
Publisher: Courier Dover Publications
Release Date : 2019-03-20

Digital Spectral Analysis written by S. Lawrence Marple, Jr. and has been published by Courier Dover Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-20 with Technology & Engineering categories.

Designed to offer a broad perspective on spectral estimations techniques and their implementation, this text provides theoretical background and review material in linear systems, Fourier transforms, matrix algebra, random processes, and statistics. 1987 edition.

Digital Processing Of Speech And Image Signals

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Author : consultant expert mohamed taha
language : en
Publisher:
Release Date : 2021-02-06

Digital Processing Of Speech And Image Signals written by consultant expert mohamed taha and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-06 with categories.

Contents1 System Theory and Fourier Transform 11.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 21.2 Linear time-invariant Systems . . . . . . . . . . . . . . . . 111.3 Fourier Transform . . . . . . . . . . . . . . . . . . . . . . . 161.4 Properties of the Fourier Transform . . . . . . . . . . . . . 251.5 Parseval Theorem . . . . . . . . . . . . . . . . . . . . . . . 331.6 Autocorrelation Function . . . . . . . . . . . . . . . . . . . 341.7 Existence of the Fourier Transform . . . . . . . . . . . . . 351.8 δ-Function . . . . . . . . . . . . . . . . . . . . . . . . . . . 361.9 Motivation for Fourier Series . . . . . . . . . . . . . . . . . 411.10 Time Duration and Band Width . . . . . . . . . . . . . . . 452 Discrete Time Systems 512.1 Motivation and Goal . . . . . . . . . . . . . . . . . . . . . 522.2 Digital Simulation using Discrete Time Systems . . . . . . 532.3 Examples of Discrete Time Systems . . . . . . . . . . . . . 562.4 Sampling Theorem (Nyquist Theorem) and Reconstruction 612.5 Logarithmic Scale and dB . . . . . . . . . . . . . . . . . . 702.6 Quantization . . . . . . . . . . . . . . . . . . . . . . . . . 722.7 Fourier Transform and z-Transform . . . . . . . . . . . . . 742.8 System Representation and Examples . . . . . . . . . . . . 782.9 Discrete Time Signal Fourier Transform Theorem . . . . . 882.10 Discrete Fourier Transform: DFT . . . . . . . . . . . . . . 902.11 DFT as Matrix Operation . . . . . . . . . . . . . . . . . . 982.12 From Continuous Fourier Transform to Matrix Representation of Discrete Fourier Transform . . . . . . . . . . . . . . 1022.13 Frequency Resolution and Zero Padding . . . . . . . . . . 1042.14 Finite Convolution . . . . . . . . . . . . . . . . . . . . . . 1052.15 Fast Fourier Transform (FFT) . . . . . . . . . . . . . . . . 1082.16 FFT Implementation . . . . . . . . . . . . . . . . . . . . . 1182.17 Cyclic Matrices and Fourier Transform . . . . . . . . . . . 1243 Spectral analysis 1313.1 Features for Speech Recognition . . . . . . . . . . . . . . . 1323.2 Short Time Analysis and Windowing . . . . . . . . . . . . 1353.3 Autocorrelation Function and Power Spectral Density . . . 1593.4 Spectrograms . . . . . . . . . . . . . . . . . . . . . . . . . 1653.5 Filter Bank Analysis . . . . . . . . . . . . . . . . . . . . . 1683.6 Mel-frequency scale . . . . . . . . . . . . . . . . . . . . . . 1713.7 Cepstrum . . . . . . . . . . . . . . . . . . . . . . . . . . . 1733.8 Statistical Interpretation of the Cepstrum Transformation 1833.9 Energy in acoustic Vector . . . . . . . . . . . . . . . . . . 1854 Fourier Transform and Image Processing 1874.1 Spatial Frequencies and Fourier Transform for Images . . . 1884.2 Discrete Fourier Transform for Images . . . . . . . . . . . 1964.3 Fourier Transform in Computer Tomography . . . . . . . . 1974.4 Fourier Transform and RST Invariance . . . . . . . . . . . 1995 LPC Analysis 2075.1 Principle of LPC Analysis . . . . . . . . . . . . . . . . . . 2085.2 LPC: Covariance Method . . . . . . . . . . . . . . . . . . . 2125.3 LPC: Autocorrelation Method . . . . . . . . . . . . . . . . 2135.4 LPC: Interpretation in Frequency Domain . . . . . . . . . 216

Fast Fourier Transform Algorithms And Applications

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Author : K.R. Rao
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-02-21

Fast Fourier Transform Algorithms And Applications written by K.R. Rao and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-02-21 with Mathematics categories.

This book presents an introduction to the principles of the fast Fourier transform. This book covers FFTs, frequency domain filtering, and applications to video and audio signal processing. As fields like communications, speech and image processing, and related areas are rapidly developing, the FFT as one of essential parts in digital signal processing has been widely used. Thus there is a pressing need from instructors and students for a book dealing with the latest FFT topics. This book provides thorough and detailed explanation of important or up-to-date FFTs. It also has adopted modern approaches like MATLAB examples and projects for better understanding of diverse FFTs.

Transforms For Engineers

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Author : K. G. Beauchamp
language : en
Publisher: Oxford University Press, USA
Release Date : 1987

Transforms For Engineers written by K. G. Beauchamp and has been published by Oxford University Press, USA this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Language Arts & Disciplines categories.

Provides a guide to signal-processing techniques and a wide variety of applications. It shows the range and use of the many alternative fast orthogonal transform algorithms now becoming available.

Fft Based Spectrum Analysis Using A Digital Signal Processor

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Author : Charles T. Dorcey
language : en
Publisher:
Release Date : 2001-12

Fft Based Spectrum Analysis Using A Digital Signal Processor written by Charles T. Dorcey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-12 with categories.

A spectrum analyzer based on Fast Fourier Transform (FFT) techniques was implemented using the TMS320C6201 Digital Signal Processor device manufactured by Texas Instruments. Portable C programs demonstrated optimization of the FFT algorithm for maximum speed. Previously published algorithms were adapted to the unique features of this Very-Long Instruction Word (VLIW) parallel processor and application, taking into account fixed-point arithmetic, parallel operation of functional units, and a hierarchy of memory capacities and speeds. The effectiveness of the VLIW C compiler, with automatic optimization, is compared with an explicitly-scheduled assembly-language program. The resulting program was then used to demonstrate the crucial need to keep program data in the Internal Data Memory to preserve hard-won performance gains.

Signal Processing Handbook

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Author : C.H. Chen
language : en
Publisher: CRC Press
Release Date : 1988-07-26

Signal Processing Handbook written by C.H. Chen and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-07-26 with Technology & Engineering categories.

Introductory, systematic treatment of the many interrelated aspects. Twenty-three contributions address the fundamentals, spectral estimation algorithms, image processing, land and ocean seismic data, telecommunications, 3-D object reconstructions. Alk. paper. Annotation copyright Book News, Inc. Po

Modern Spectrum Analysis

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Author : Donald G. Childers
language : en
Publisher: IEEE Computer Society Press
Release Date : 1978

Modern Spectrum Analysis written by Donald G. Childers and has been published by IEEE Computer Society Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Science categories.