Dissertation > Excellent graduate degree dissertation topics show

Audio distortion tester machine interface and measurement algorithms

Author: WuXiaoZuo
Tutor: TangYouXi
School: University of Electronic Science and Technology
Course: Communication and Information System
Keywords: Distortion man-machine interface DFT Zinc
CLC: TP216.1
Type: Master's thesis
Year: 2010
Downloads: 58
Quote: 0
Read: Download Dissertation

Abstract


Radios, whether used in ordinary civil lives, or in strategic and tactical military field, often require an important measure of audio quality, which is characterized by distortion.Distortion measuring instruments, because of their large size and bulky body, are restricted to a small application. And because the relevant auxiliary equipments are numerous, such as traditional harmonic analysis method need to use the spectrum analyzer, it results in costly spendings. Also, because the operation is cumbersome and very professional, it makes it hard for non-professional user to operate.With the microprocessor and embedded technology’s development and the speed and accuracy of digital acquisition continuing to improve, a variety of digital and intelligent new measuring instruments are constantly arise. In this paper, to overcome the existing shortcomings of distortion measuring of traditional instruments, we develop a distortion tester supporting a good man-machine interface based on a DSP chip to realize the digital distortion measurements.The paper first introduces research background and status of the radio audio distortion test instruments, as well as the development of human-machine interface and features. Then, it depicts the principle of the audio distortion and gives a brief introduction to the hardware and software structure of the tester. After that, the paper conducts a needs analysis and detailed design of the man-machine interface tester. With comparison of several common harmonic distortion methods, we choose windowed DFT algorithm as the selected measurement approach. In addition to these, the paper gives the Matlab floating-point simulation and fixed-point DSP implementation of the algorithm. Finally, the paper sums up the work and points out the further research directions.Via the above research, the paper develops a kind of audio distortion tester which is digital and intelligent. It offers a certain value for interface development in using Zinc and distortion measurement in engineering application.

Related Dissertations

  1. Density Functional Theory Study of Dimethyl Ether Adsorption on the Low-Index Pt Surface,O485
  2. Study of Mechanism Using Two-Direction Pre-Stress to Control Welding Distortion and Hot Cracking,TG404
  3. The Research and Realization on Asymmetric Sine Inverter with Adjustable Frequency and Amplitude,TM464
  4. Research on Ionosphere Contamination of High Frequency Radar Echoes and Time-Frequency Analysis Technology,TN958.93
  5. The Algorithm of DFT with a Subset of Output Points Based on TS101 and Its Software Implementation,TN911.72
  6. Rate-distortion Optimization Based Rate Control,TN919.81
  7. Packet Loss Recovering Technology for Speech Transmission over Network,TN912.3
  8. Research on Geological Features of Yinchanggou-Qiluogou Lead-Zinc Ore Deposit, Ningnan County, Sichuan Province,P618.4
  9. Anti-corrosion Property of Flake Zinc Epoxy Coating Doped with Rare Earth in SRB,TQ630.1
  10. Effects of Different Applying Methods of Copper and Zinc and AM Fungi under Different P-Applied Levels on Growth and Tanshinones of Salviae Miltiorrhizae Bunge,S567.53
  11. Effects of Copper, Zinc and Selenium on Yield and Quality of Chrysanthemum Morifolium Ramat,S567.239
  12. Cloning and Characterization of Five Zinc-finger Proteins (ZFPs) Related with Stresses in Cotton (Gossypium Hirsutum L.),S562
  13. The Effect of High-level Copper and Zinc Addition on the Performance, Digestibilities and Gastrointestinal Enzyme Activities of Weaned Piglets,S828.5
  14. Theoretical Studies on Cyclization Mechanism and Regioselectivities of Selected Organic Reactions,O643.12
  15. Preparation and Photocatalytic Properties of Semiconductor Oxides,O643.36
  16. Study on the in Vitro Effect of Zinc on the Growth of Murine Embryonic Palatal,R782.2
  17. Northwest Geological two lead and zinc in the river Construction of QHSE management system,X936;X322
  18. Inorganic and inorganic - organic hybrid Zn -based catalysts and catalytic L- lactide ring-opening polymerization of L- polylactic acid applied research,O631.3
  19. Hydrogen complex photochemical Theoretical Study,O641.1
  20. Core-shell polymer microspheres synthesis, modification and application,O631.3
  21. Pyridine Metal Complexes electronic spectra and redox properties of theoretical research,O627

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Automatic testing equipment,instruments > Automatic measuring instruments
© 2012 www.DissertationTopic.Net  Mobile