Speech Signal Processing

Cepstral analysis Cepstral analysis Notes
  The source filter model of speech production decomposes the speech signal, tinto an excitation, tex2html_wrap_inline2963, and a linear filter, tex2html_wrap_inline2889. In the frequency domain:
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Voice-Over-Internet Protocol Voice-Over-Internet Protocol   Notes
  Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line.
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Vector Quantized Vector Quantized Notes
  In this paper we are proposing K-means algorithm for optimization of codebook. In general K-means is an optimization algorithm but this algorithm takes very long time to converge. We are using existing codebook so that the convergence time for K-means is reduced considerably
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Time-Domain Methods for Speech Processing Time-Domain Methods for Speech Processing Notes
  illustrates the speech production model universally used in speech signal processing.
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Introduction To Speech Processing Introduction To Speech Processing Notes
  Time domain processing :direct operations on the speech waveform, Frequency domain processing: direct operations on a spectral representation of the signal
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Short-Time Fourier Analysis Short-Time Fourier Analysis Notes
  In an effort to correct this deficiency, Dennis Gabor (1946) adapted the Fourier transform to analyze only a small section of the signal at a time -- a technique called windowing the signal.
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Pitch-Scale Modification Pitch-Scale Modification Notes
  The speech pitch-scale modification that can change the tone and the prosody is useful in the applications of privacy protection and entertainment. The analysis-synthesis method is one of the approaches for pitch-scale modification.
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Pitch Period Pitch Period Notes
  Wavelet transform-based pitch period estimation is well known in the literature. This approach to pitch estimation assumes that the glottis closures are correlated with the maxima in the adjacent scales of the wavelet transform and for pitch period estimation, one needs to detect these correlated maxima across these scales, which is often prone to error especially in the case of noisy signals.
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Overview Of Speech Mechanics Overview Of Speech Mechanics Notes
  The easiest way to master something is to become familiar with it. The images below depict the parts of the speech mechanism that we all use everyday but may not know how or why we do so.
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Linear Prediction Algorithms Linear Prediction Algorithms Notes
  Estimating a variable given some other variables, is one of the most commonly occuring problems in real life. More speci cally, estimation or prediction is one of the most celebrated problems in time series analysis.
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Linear Prediction Linear Prediction Notes
  Introduce the theory of linear prediction, Develop autocorrelation and covariance techniques for solution, Understand similarities with regression Explain the relationship to windowing and maximum entropy, Add a new technique to our signal modeling block diagram
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Clustering And vector Quantization Clustering And vector Quantization  Notes
  Provides routines for k-means clustering, generating code books from k-means models, and quantizing vectors by comparing them with centroids in a code book
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Phonetics Phonetics Notes
  Physiological mechanism of speech production,The physical properties of sound waves etc..,
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Formant Extraction Formant Extraction Notes
  This paper presents an approach based on the properties of group delay functions for extracting formants from speech signals. The algorithm is similar to the cepstral smoothing approach for formant extraction using homomorphic deconvolution.
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Introduction to Phonetics Introduction to Phonetics Notes
  Articulatory phonetics,study of the physiological mechanisms of speech production Acoustic phonetics, study of the physical properties of sound waves produced when we speak Auditory phonetics, study of the percepttion off sound, as mediated by the ear, auditory nerve, and brain
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Delta Modulation Delta Modulation Notes
  Delta modulation is a simplified version of the simple DPCM
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Cholesky Method Cholesky Method Notes
  A standard method for solving the symmetric definite generalized eigenvalue problem Ax = ?Bx, where A is symmetric and B is symmetric positive definite, is to compute a Cholesky factorization
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Cepstral Analysis Techniques for Speech Recognition Cepstral Analysis Techniques for Speech Recognition Notes
  Homomorphic Deconvolution, The Real Cepstrum,The Short Term Cepstrum, Cepstral Pitch Determination The Complex Cepstrum
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Automatic Speech Recognition Automatic Speech Recognition Notes
  Designing a machine that mimics human behavior, particularly the capability of speaking naturally and responding properly to spoken language, has intrigued engineers and scientists for centuries. Since the 1930s, when Homer Dudley of Bell Laboratories proposed a system model for speech analysis and synthesis
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Auditory Perception Auditory Perception Notes
  Motivation: Why & how, Auditory physiology, Psychophysics, Detection & discrimination, Pitch perception Speech perception, Auditory organization & Scene analysis
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