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A hardware MP3 decoder with low precision floating point intermediate storage
Linköping University, Department of Electrical Engineering.
Linköping University, Department of Electrical Engineering.
2003 (English)Independent thesis Basic level (professional degree)Student thesisAlternative title
En hårdvarubaserad MP3-avkodare som använder flyttal med låg precision för mellanlagring (Swedish)
Abstract [en]

The effects of using limited precision floating point for intermediate storage in an embedded MP3 decoder are investigated in this thesis. The advantages of using limited precision is that the values need shorter word lengths and thus a smaller memory for storage.

The official reference decoder was modified so that the effects of different word lengths and algorithms could be examined. Finally, a software and hardware prototype was implemented that uses 16-bit wide memory for intermediate storage. The prototype is classified as a limited accuracy MP3 decoder. Only layer III is supported. The decoder could easily be extended to a full precision MP3 decoder if a corresponding increase in memory usage was accepted.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2003. , 108 p.
LiTH-ISY-Ex, 3446
Keyword [en]
Datorteknik, MP3, audio, implementation, floating point
Keyword [sv]
National Category
Computer Engineering
URN: urn:nbn:se:liu:diva-1816OAI: diva2:19142
Available from: 2003-06-16 Created: 2003-06-16

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