Dissertation > Excellent graduate degree dissertation topics show

Optimize the design and implementation of the MP3 decoding algorithm based on MCF5329

Author: HuTao
Tutor: LiGuangJun
School: University of Electronic Science and Technology
Course: Information and Communication Engineering
Keywords: MP3 Optimization MCF5329 Fixed point
CLC: TN912.3
Type: Master's thesis
Year: 2008
Downloads: 130
Quote: 2
Read: Download Dissertation

Abstract


MP3 is a compressed mode, the third layer of the MPEG-I audio standards. The compression ratio is high, the sound distortion characteristics of a small, PC, network, the PDA most popular audio format. MP3 of a wide range of research because of the universality of the MP3 application. Common MP3 audio decoding two options: First, the hardware decoding, through a dedicated MP3 decoder hardware decoding in embedded systems. Its characteristics can achieve higher performance and lower power consumption, but poor scalability, and does not have general purpose processing capabilities. Currently most of the commercial use of MP3 players such programs. Another software decoding, that is totally dependent on the processing power of the embedded microprocessor or DSP, MP3 fixed-point or floating-point decoding process MP3 decoding process. This embedded microprocessor or DSP processing power requirements are relatively high. Especially in embedded systems to achieve complex tasks requiring microprocessor capable of handling multiple processes, including playing MP3, more stringent requirements on the processing power of the microprocessor. In this thesis is to proceed from the point of view of the software decoder, MP3 decoding multitasking embedded platform above. Multitasking platform on the means to achieve a single task processor resources occupied as little as possible. The great amount of computation required by such requirements on the efficiency of the MP3 decoder is very high, while the original floating-point code, the realization of a single task in most embedded systems can achieve real-time decoding. So of original MP3 floating point code to fixed-point code conversion, and it is very important to optimize the converted code. In this thesis, the fixed point of the floating-point code in strict numerical analysis, in order to minimize the error in the modification process. Thus ensuring a the decoders eventually realize a good sound quality. Time to optimize the code, in addition to the algorithm level optimization and high-level language level optimization, for the project to achieve the processor MCF5329 assembler level optimization. The optimized MP3 computational complexity of the algorithm is only 1/16 of the original algorithm, greatly reduce the complexity of the algorithm. MP3 decoding algorithm eventually the target board MCF5329EVB on completion of the various tests. After the the subjective audition and decoded output waveform comparison, MP3 decoding algorithm in terms of performance conditions improve drastically and still have a good quality of decoding.

Related Dissertations

  1. Development of the Platform for Compressor Optimization Design and Aerodynamic Optimization Design in the Transonic Compressor,TH45
  2. Investigation of Turbine S2 Stream Surface Direct Problem Aerodynamic Optimization Design,V235.11
  3. Reseach on Optimal Control of Elevator Group Based upon Ant Colony Algorithm,TU857
  4. The Optimization of AVS Video Decoder on the PC Platform and Improvement of Field Decoding,TN919.81
  5. Research on Stability of Hierarchical Sattellite Network,TN927.23
  6. Query Processing and Optimization in Massive Multi-Database Integration,TP311.13
  7. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  8. Studies on Fermentation Optimization, Purification and Enzyme Characteristics of Lipase from Aspergillus Oryzae FS-1,TQ925.6
  9. Large the Hongshan iron ore mine personnel tracking positioning system optimization study,TN929.5
  10. Analysis of Nutritional Compositions and Quality of Shishen (Eremurus Chinensis Fedtsch.),S647
  11. Optimization of Fermentation Conditions, Purification, Cloning and Expression of a Cold-active Lipase from Pseudomonas Sp.RT-1,TQ925
  12. Breeding of Fungal α-amylase High-producing Strain by Genome Shuffling,TQ925
  13. Study on Application of Red Yeast Rice in Fermented Sausage,TS251.65
  14. Domestication of Acidithiobacillus Ferroxidans and Its Application to Bio-desulfuration of Coal,X701.3
  15. Active Power Filter and Its Application in Distribution Network,TN713.8
  16. On Governance Optimization in the Vision of the Network Politic,D630
  17. Cellulose Pretreatment with Ionic Liquid for Enzymatic Hydrolysis,TQ352.1
  18. The Research of Land-Use Optimization Approach Based on Non-Point Source Pollution Controlled,X24
  19. Finite Element Analysis and Optimization Design of a Tractor Cab,S219.02
  20. Studies on Optimization Technology of Fermentation with Corn Straw and Cow Dung Mixed Material,S216.4
  21. Isolation and Identification of a Probiotic Strain Capable of Producing Glycerol and Optimization of Fermentation Conditions for the Strain,S823.5

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Electro-acoustic technology and speech signal processing > Speech Signal Processing
© 2012 www.DissertationTopic.Net  Mobile