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Paper Abstract and Keywords
Presentation 2011-01-17 16:05
Audio dynamic range compression using polynomial equations
Tatsuya Miyashita, Kazuhiro Motegi, Shugang Wei (Gunma Univ.) VLD2010-97 CPSY2010-52 RECONF2010-66
Abstract (in Japanese) (See Japanese page) 
(in English) An audio signal level compressor is presented, which is based on the approximation algorithm using an interpolating polynomial. To implement a compression characteristic in a digital audio system, a power calculation with fractional numbers is required and it is difficult to be performed directly in digital circuits. We introduce a polynomial expression to approximate the power operation, and then the gain calculation is easily performed with several additions and multiplication. Newton's interpolation formula and piecewise-polynomial approximation are used to calculate the compression characteristics in a very short time, and the obtained compression characteristics are very close to the ideal ones.
Keyword (in Japanese) (See Japanese page) 
(in English) digital audio effects / dynamic range compression / compressor / piecewise-polynomial approximation / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 360, VLD2010-97, pp. 81-85, Jan. 2011.
Paper # VLD2010-97 
Date of Issue 2011-01-10 (VLD, CPSY, RECONF) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF VLD2010-97 CPSY2010-52 RECONF2010-66

Conference Information
Conference Date 2011-01-17 - 2011-01-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Keio Univ (Hiyoshi Campus) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) FPGA Applications, etc 
Paper Information
Registration To VLD 
Conference Code 2011-01-RECONF-VLD-CPSY-SLDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Audio dynamic range compression using polynomial equations 
Sub Title (in English)  
Keyword(1) digital audio effects  
Keyword(2) dynamic range compression  
Keyword(3) compressor  
Keyword(4) piecewise-polynomial approximation  
1st Author's Name Tatsuya Miyashita  
1st Author's Affiliation Gunma University (Gunma Univ.)
2nd Author's Name Kazuhiro Motegi  
2nd Author's Affiliation Gunma University (Gunma Univ.)
3rd Author's Name Shugang Wei  
3rd Author's Affiliation Gunma University (Gunma Univ.)
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Date Time 2011-01-17 16:05:00 
Presentation Time 20 
Registration for VLD 
Paper # IEICE-VLD2010-97,IEICE-CPSY2010-52,IEICE-RECONF2010-66 
Volume (vol) IEICE-110 
Number (no) no.360(VLD), no.361(CPSY), no.362(RECONF) 
Page pp.81-85 
#Pages IEICE-5 
Date of Issue IEICE-VLD-2011-01-10,IEICE-CPSY-2011-01-10,IEICE-RECONF-2011-01-10 

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