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Paper Abstract and Keywords
Presentation 2009-12-03 14:00
Quality Improvement of Audio Encoded by MPEG-1 Audio LayerII with High Bitrate
Toshinori Haginoya, Kiyoshi Tanaka (Shinshu Univ.), Koichi Takagi (KDDI Labs.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this work, we propose a method that improves the quality of decoded audio signals by modifying the dynamic bit allocation process when we encode audio signals using MPEG-1/Audio Layer II with high bitrate. In general, the number of bits allocated decreases as we increase the index number of sub-band. However, the maximum number of bits is often allocated to some specific sub-bands and consequently the total number of bits to be allocated cannot be always utilized effectively, when we encode audio signals using the normal encoder with high bitrate. In this work, we modify the algorithm of dynamic bit allocation in the encoder so that the maximum number of bits is never allocated to specific sub-bands. We verify the effectiveness of the proposed method through computer simulation using some music data included in RWC database.
Keyword (in Japanese) (See Japanese page) 
(in English) MPEG-1/Audio Layer II / dynamic bit allocation / high bitrate / / / / /  
Reference Info. ITE Tech. Rep., vol. 33, no. 54, ME2009-215, pp. 5-8, Dec. 2009.
Paper # ME2009-215 
Date of Issue 2009-11-26 (ME) 
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee ME IEICE-BS  
Conference Date 2009-12-03 - 2009-12-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagano Prefecture General Industrial Technology Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ME 
Conference Code 2009-12-ME-BS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Quality Improvement of Audio Encoded by MPEG-1 Audio LayerII with High Bitrate 
Sub Title (in English)  
Keyword(1) MPEG-1/Audio Layer II  
Keyword(2) dynamic bit allocation  
Keyword(3) high bitrate  
1st Author's Name Toshinori Haginoya  
1st Author's Affiliation Shinshu University (Shinshu Univ.)
2nd Author's Name Kiyoshi Tanaka  
2nd Author's Affiliation Shinshu University (Shinshu Univ.)
3rd Author's Name Koichi Takagi  
3rd Author's Affiliation KDDI Laboratories (KDDI Labs.)
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Date Time 2009-12-03 14:00:00 
Presentation Time 25 
Registration for ME 
Paper # ITE-ME2009-215 
Volume (vol) ITE-33 
Number (no) no.54 
Page pp.5-8 
#Pages ITE-4 
Date of Issue ITE-ME-2009-11-26 

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