Mobile Communications Handbook, 3rd Edition

28

Speech Coding for Wireless Communications

 

     Jerry D. Gibson

28.1 Introduction

28.2 Basic Issues in Speech Coding

28.3 Speech Coding Methods

Waveform Coding

Subband and Transform Methods

Analysis-by-Synthesis Methods

Postfiltering

Variable Rate Coding

SNR and Bandwidth Scalable Methods

28.4 Speech Coding Standards

ITU-T Standards

Digital Cellular Standards

VoIP Standards

28.5 Next-Generation Standards

28.6 Outstanding Issues and Future Challenges

28.7 Summary and Conclusions

Appendix: Speech Quality and Intelligibility

Acknowledgment

References

28.1 Introduction

 

The goal of speech coding is to represent speech in digital form with as few bits as possible while maintaining the intelligibility and quality required for the particular ...