Dissertation > Excellent graduate degree dissertation topics show

Research and DSP Implement of a Low Bit Rate Speech Coding Based on MBE

Author: ChenHongLiang
Tutor: LiuNaiAn；YangJiaZuo
School: Xi'an University of Electronic Science and Technology
Course: Military communications
Keywords: Speech coding Multi-band excitation Multistage vector quantization DSP
CLC: TN919.81
Type: Master's thesis
Year: 2011
Downloads: 69
Quote: 2
Read: Download Dissertation

Abstract


With the rapid development of military communications , mobile communications and the Internet , voice communication technology are constantly updated with fusion . Speech coding as the important part in the process of the digital voice communications , but also changing the profile , and has been pursuing with a rate as low as possible to obtain the best possible speech quality . Therefore, the low - rate speech coding technology is the main development direction of the voice coding , low-rate , high - quality speech coding is the focus of future research . Firstly a brief introduction to speech coding technology overview , speech coding status quo and development trends and some problems . Then a more detailed description of the low bit rate speech coding technology , which focus on analysis of the characteristics of multi-band excitation (MBE) speech model , multi- band excitation speech model parameter extraction and speech synthesis . MBE speech model based on the completion of the study of speech coding algorithms . Be improved on the basis of the existing research results , the existing algorithms , finishing, especially in the quantization portion of the algorithm , the use of multi-stage vector quantizer ( MSVQ ) , further reduces the error rate and improve the synthesized speech quality, to have better clarity and intelligibility . The papers in VC6.0 environment using C language algorithm simulation, the listening tests show the synthesized voice 2.45kbps rate with high intelligibility ; then TMS320VC5510DSK algorithm to complete hardware development platform DSP implementation .

Related Dissertations

  1. Design of Electronicalcontrol System for Electronic Jacquard Knitting Machine,TS183
  2. Research on the Integrated Grating Subdividing Digital Display Device Based on DSP,TH822
  3. Study on Two Dimensional of Auto-Collimator Based on DSP,TH741.14
  4. Study on the Control System for Automatic Aiming of HWIL Pitching Mechanism,TJ303
  5. Research on Synchronous Motor Excitation Control System,TM341
  6. Compensation Methods of Different Speech Coding for Speaker Recognition,TN912.34
  7. The AES Algorithm and Its Implementation in DSP,TN918.1
  8. The Design of a DSP-Based Robot Speech Command Recgnition System,TN912.34
  9. Research on Signal Receiving System of Phase Laser Range Finder,TN249
  10. Study on Implementation Technology of Channel Estimation in OFDM System Based on DSP,TN919.3
  11. Optimizing and Realising Research on Vedio Compression in TV Guidance System,TN919.81
  12. Voice Signal De-noise Base on Wavelet and Arithmetic Implement with DSP,TN912.3
  13. Research on Image Compression and Implementation Using TMS320C6713 Based on SPIHT Algorithm,TP391.41
  14. A Study on the Technology of the Infrared Image Matching,TP391.41
  15. Development of 3-Dimensional Scanning Probe Data Acquisition System Based on DSP,TP274.2
  16. Development of Vxibus Common Interface Module Based on DSP,TP274
  17. Research of Acoustic Signal Acquisition System Based on DSP,TP274.2
  18. Research of DSP-based Real-time Demodulation Method of One-frequency Laser Interferometer,TN911.3
  19. Laser alignment system posture measuring device developed,TN24
  20. ATV vehicle weapon control system,TP273
  21. The Studt of ILBC Speech Coding’s Key Technology and Its DSP Design and Optimization,TN912.3

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication > Image coding
© 2012 www.DissertationTopic.Net  Mobile