Speech and Audio Coding for Wireless and Network Applications
Springer (Verlag)
978-0-7923-9345-0 (ISBN)
Speech and Audio Coding for Wireless and Network Applications contains contributions describing technologies that are under consideration as standards for such applications as digital cellular communications (the half-rate American and European coding standards). A brief Introduction is followed by a section dedicated to low-delay speech coding, a research direction which emerged as a result of the CCITT requirement for a universal low-delay 16 kbit/s speech coding technology and now continues with the objective of achieving toll quality with moderate delay at a rate of 8 kbit/s. A section on the important topic of speech quality evaluation is then presented. This is followed by a section on speech coding for wireless transmission, and a section on audio coding which covers not only 7 kHz bandwidth speech, but also wideband coding applicable to high fidelity music. The book concludes with a section on speech coding for noisy transmission channels, followed by a section addressing future research directions.
Speech and Audio Coding for Wireless and Network Applications presents a cross-section of the key contributions in speech and audio coding which have emerged recently. For this reason, the book is a valuable reference for all researchers and graduate students in the speech coding community.
II Low Delay Speech Coding.- 1. High Quality Low-Delay Speech Coding at 12 kb/s.- 2. Low Delay Speech Coder at 8 kbit/s with Conditional Pitch Prediction.- 3. Low Delay Coding of Speech and Audio Using Nonuniform Band Filter Banks.- 4. 8 kb/s Low-Delay CELP Coding of Speech.- 5. Lattice Low Delay Vector Excitation for 8 kb/s Speech Coding.- III Speech Quality.- 6. Subjective Assessment Methods for the Measurement of Digital Speech Coder Quality.- 7. Speech Quality Evaluation of the European, North-American and Japanese Speech Coding Standards for Digital Cellular Systems.- 8. A Comparison of Subjective Methods for Evaluating Speech Quality.- IV Speech Coding for Wireless Transmission.- 9. Delayed Decision Coding of Pitch and Innovation Signals in Code-Excited Linear Prediction Coding of Speech.- 10. Variable Rate Speech Coding for Cellular Networks.- 11. QCELP: A Variable Rate Speech Coder for CDMA Digital Cellular.- 12. Performance and Optimization of a GSM Half Rate Candidate.- 13. Joint Design of Multi-Stage VQ Codebooks for LSP Quantization with Applications to 4 kbit/s Speech Coding.- 14. Waveform Interpolation in Speech Coding.- V Audio Coding.- 15. A Wideband CELP Coder at 16 kbit/s for Real Time Applications.- 16. Multirate STC and Its Application to Multi-Speaker Conferencing.- 17. Low Delay Coding of Wideband Speech at 32 Kbps Using Tree Structures.- 18. A Two-Band CELP Audio Coder at 16 Kbit/s and Its Evaluation.- 19. 9.6 kbit/s ACELP Coding of Wideband Speech.- 20. High Fidelity Audio Coding with Generalized Product Code VQ.- VI Speech Coding for Noisy Transmission Channels.- 21. On Noisy Channel Quantizer Design for Unequal Error Protection.- 22. Channel Coding Schemes for the GSM Half-Rate System.- 23. Combined Source-Channel Coding of LSP Parameters UsingMulti-Stage Vector Quantization.- 24. Vector Quantization of LPC Parameters in the Presence of Channel Errors.- 25. Error Control and Index Assignment for Speech Codecs.- VII Topics in Speech Coding.- 26. Efficient Techniques for Determining and Encoding the Long Term Predictor Lags for Analysis-by-Synthesis Coders.- 27. Structured Stochastic Codebook and Codebook Adaptation for CELP.- 28. Efficient Multi-Tap Pitch Prediction for Stochastic Coding.- 29. QR Factorization in the CELP Coder.- 30. Efficient Frequency-Domain Representation of LPC Excitation.- 31. Product Code Vector Quantization of LPC Parameters.- 32. A Mixed Excitation LPC Vocoder with Frequency-Dependent Voicing Strength.- 33. Adaptive Predictive Coding with Transform Domain Quantization.- 34. Finite-State VQ Excitations for CELP Coders.- Author Index.
| Reihe/Serie | The Springer International Series in Engineering and Computer Science ; 224 |
|---|---|
| Zusatzinfo | IX, 283 p. |
| Verlagsort | Dordrecht |
| Sprache | englisch |
| Maße | 155 x 235 mm |
| Themenwelt | Mathematik / Informatik ► Informatik |
| Naturwissenschaften ► Physik / Astronomie ► Mechanik | |
| Technik ► Elektrotechnik / Energietechnik | |
| Technik ► Nachrichtentechnik | |
| ISBN-10 | 0-7923-9345-7 / 0792393457 |
| ISBN-13 | 978-0-7923-9345-0 / 9780792393450 |
| Zustand | Neuware |
| Haben Sie eine Frage zum Produkt? |
aus dem Bereich
