Using low precision floating point numbers to reduce memory cost for MP3 decoding
2004 (English)In: International Workshop on Multimedia Signal Processing, IEEE Xplore , 2004, 119-122 p.Conference paper (Refereed)
The purpose of our work has been to evaluate the practicality of using a 16-bit floating point representation to store the intermediate sample values and other data in memory during the decoding of MP3 bit streams. A floating point number representation offers a better trade-off between dynamic range and precision than a fixed point representation for a given word length. Using a floating point representation means that smaller memories can be used which leads to smaller chip area and lower power consumption without reducing sound quality. We have designed and implemented a DSP processor based on 16-bit floating point intermediate storage. The DSP processor is capable of decoding all MP3 bit streams at 20 MHz and this has been demonstrated on an FPGA prototype.
Place, publisher, year, edition, pages
IEEE Xplore , 2004. 119-122 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-16559DOI: 10.1109/MMSP.2004.1436435ISBN: 0-7803-8578-0OAI: oai:DiVA.org:liu-16559DiVA: diva2:158386