It is becoming increasingly apparent that all forms of communication-including voice-will be transmitted through packet-switched networks based on the Internet Protocol (IP). Therefore, the design of modern devices that rely on speech interfaces, such as cell phones and PDAs, requires a complete and up-to-date understanding of the basics of speech
Introduction to Speech Coding. Fundamentals of Digital Signal Processing for Speech Processing. Sampling Theory. Waveform Coding and Quantization. Differential Coding. Differential Coding Introduction. Linear Predictive Coding (LPC). Vector Quantization for Speech Coding Applications. Analysis-by-Synthesis Coding of Speech. Internet Low Bit-Rate Coder (iLBC). Signal Processing in VoIP Systems. Real-Time DSP Implementation of ITU G.729 Speech Coder. Conclusions and Future Directions for Speech Coding. Summary of Chapters 1-12. Future Directions for Speech. Research. References. Index.