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Title
Japanese: 
English:Modified Delta Encoding and Its Applications to Speech Signal 
Author
Japanese: MaYanna, 野田久順, 伊藤泉, 西原明法.  
English: Yanna Ma, Hisayori Noda, Izumi Ito, AKINORI NISHIHARA.  
Language English 
Journal/Book name
Japanese: 
English:IEEE Region 10 Conference TENCON 
Volume, Number, Page        
Published date Nov. 2010 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English:IEEE TENCON2010 
Conference site
Japanese: 
English:Fukuoka,Japan 
File
DOI https://doi.org/10.1109/TENCON.2010.5686714
Abstract A modified delta encoding method and its applications to speech signal are proposed. In this method, Hungarian algorithm is applied to find the minimum distance of arbitrary two frames in speech signal and minimum spanning tree is used to find an effective delta encoding path. In simulation, the method is applied to the compression of sinusoidal coding. The results show that the data size after compression is 6% smaller than a usual delta encoding whose path is not suitably permutated. In addition, the proposed method has the potential to apply on data security for practical use because the delta encoding path which can be used as the security key is unordered and long enough.

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