| Vorliegende Sprache |
eng |
| Hinweise auf parallele Ausgaben |
28608872X Buchausg. u.d.T.: ‡Iser, Bernd, 1976 - : Bandwidth extension of speech signals |
| ISBN |
978-0-387-68898-5 |
| Name |
Iser, Bernd |
| Minker, Wolfgang |
| Name ANZEIGE DER KETTE |
Minker, Wolfgang |
| Name |
Schmidt, Gerhard |
| T I T E L |
Bandwidth Extension of Speech Signals |
| Verlagsort |
Boston, MA |
| Verlag |
Springer US |
| Springer |
| Erscheinungsjahr |
2008 |
| 2008 |
| Umfang |
Online-Ressource (digital) |
| Reihe |
Lecture Notes in Electrical Engineering ; 13 |
| Notiz / Fußnoten |
Includes bibliographical references and index |
| Weiterer Inhalt |
Introduction; Speech Generation; Analysis Techniques for Speech Signals; Excitation Signal Extension; Broadband Spectral Envelope Estimation; Quality Evaluation; Summary. CoverContents -- 1 Introduction -- 1.1 Scope of the Book -- 1.2 Nature of Speech Signals -- 1.3 Band Limited Speech Signals -- 1.4 Organization of the Book -- 2 Speech Generation -- 2.1 Human Speech Generation Process -- 2.2 Model for the Speech Generation Process -- 2.2.1 Excitation Signal -- 2.2.2 Vocal Tract Filter -- 2.3 Basic Approach for Bandwidth Extension -- 3 Analysis Techniques for Speech Signals -- 3.1 Linear Predictive Analysis -- 3.1.1 Autocorrelation Method -- 3.1.2 Covariance Method -- 3.2 Parametric Representations of the Spectral Envelope -- 3.2.1 Tube Model -- 3.2.2 AR-Coefficients -- 3.2.3 Cepstral Coefficients -- 3.2.4 MFCCs -- 3.2.5 Line Spectral Frequencies -- 3.3 Scalar Speech Features -- 3.3.1 Zero Crossing Rate -- 3.3.2 Gradient Index -- 3.3.3 Fundamental Frequency -- 3.3.4 Kurtosis -- 3.3.5 Spectral Centroid -- 3.3.6 Energy Based Features -- 3.4 Distance Measures -- 3.4.1 Log Spectral Deviation -- 3.4.2 RMS-Log Spectral Deviation -- 3.4.3 Cepstral Distance -- 3.4.4 Likelihood Ratio Distance -- 3.4.5 Itakura Distance -- 3.4.6 Itakura8211;Saito Distance -- 3.4.7 Other Spectral Distance Measures -- 4 Excitation Signal Extension -- 4.1 Estimation of the Narrowband Excitation Signal -- 4.2 Extension Using Non-Linear Characteristics -- 4.2.1 Half-Way Rectification -- 4.2.2 Full-Way Rectification -- 4.2.3 Quadratic Characteristic -- 4.2.4 Cubic Characteristic -- 4.2.5 Tanh Characteristic -- 4.2.6 Benesty Characteristic -- 4.2.7 Adaptive Quadratic Characteristic -- 4.3 Extension Using Spectral Shifting/Modulation Techniques -- 4.3.1 Fixed Spectral Shifting -- 4.3.2 Adaptive Spectral Shifting -- 4.4 Extension Using Function Generators -- 4.4.1 Sine Generators -- 4.4.2 White Noise Generators -- 4.5 Power Adjustment -- 4.6 Discussion -- 5 Broadband Spectral Envelope Estimation -- 5.1 Generation and Preparation of a Training Data Set -- 5.2 Estimation of the Narrowband Spectral Envelope -- 5.3 Estimation of the Broadband Spectral Envelope Using Codebooks -- 5.3.1 Codebook Training and Operation Using AR Coefficients -- 5.3.2 Codebook Training and Operation Using Cepstral Coefficients -- 5.3.3 Codebook Training and Operation Using MFCCs -- 5.3.4 Codebook Training and Operation Using LSFs -- 5.4 Estimation of the Broadband Spectral Envelope Using Neural Networks -- 5.4.1 Training and Operation Using Cepstral Coefficients -- 5.5 Estimation of the Broadband Spectral Envelope Using Linear Mapping -- 5.5.1 Training and Operation Using Cepstral Coefficients -- 5.6 Combined Approach Using Codebook Classification and Linear Mapping -- 5.6.1 Training and Operation Using Cepstral Coefficients -- 5.7 Discussion -- 6 Quality Evaluation -- 6.1 Evaluation of the Excitation Signal Extension -- 6.1.1 Objective Quality Criteria -- 6.1.2 Subjective Quality Criteria -- 6.1.3 Rank Correlation Between Objective and Subjective Results -- 6.2 Evaluation of the Envelope Estimation -- 6.2.1 Objective Quality Criteria -- 6.2.2 Subjective Quality Criteria -- 6.3 Discussion -- 7 Summary -- A Levinson8211;Durbin Recursion -- B LBG-Algorithm -- C Generalized Delta Rule or Standard Backpropagation -- D Stability Check -- E Feature Distributions -- F Evaluation Results -- G Abbreviations and Symbols -- G.1 Abbr. |
| Titelhinweis |
Buchausg. u.d.T.: ‡Iser, Bernd, 1976 - : Bandwidth extension of speech signals |
| ISBN |
ISBN 978-0-387-68899-2 |
| Klassifikation |
TTBM |
| UYS |
| TEC008000 |
| COM073000 |
| *94A12 |
| 94-01 |
| 621.382 |
| 621.3822 |
| 620 |
| TK5102.9 |
| TA1637-1638 |
| TK7882.S65 |
| Kurzbeschreibung |
Bandwidth Extension of Speech Signalsdescribes the theory and methods for quality enhancement of clean speech signals and distorted speech signals such as those that have undergone a band limitation, for instance, in a telephone network. Problems and the respective solutions are discussed for the different approaches. The different approaches are evaluated and a real-time implementation of the most promising approach is presented. The book includes topics related to speech coding, pattern- / speech recognition, speech enhancement, statistics and digital signal processing in general. |
| 2. Kurzbeschreibung |
Bandwidth Extension of Speech Signals describes the theory and methods for quality enhancement of clean speech signals and distorted speech signals such as those that have undergone a band limitation, for instance, in a telephone network. Problems and the respective solutions are discussed for the different approaches. The different approaches are evaluated and a real-time implementation of the most promising approach is presented. The book includes topics related to speech coding, pattern- / speech recognition, speech enhancement, statistics and digital signal processing in general |
| 1. Schlagwortkette |
Sprachverarbeitung |
| Bandbreite <Elektrotechnik> |
| ANZEIGE DER KETTE |
Sprachverarbeitung -- Bandbreite |
| SWB-Titel-Idn |
28579227X |
| Signatur |
Springer E-Book |
| Bemerkungen |
Elektronischer Volltext - Campuslizenz |
| Elektronische Adresse |
$uhttp://dx.doi.org/10.1007/978-0-387-68899-2 |
| Internetseite / Link |
Volltext |
| Siehe auch |
Volltext |
| Siehe auch |
Cover |
| Siehe auch |
Inhaltstext |
