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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö ¼ÒÇÁÆ®¿þ¾î ¹× µ¥ÀÌÅÍ °øÇÐ

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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) »óȲ ÀÎ½Ä ¸ð¹ÙÀÏ ÄÄÇ»ÆÃÀ» À§ÇÑ »ç¿îµå ºÐ·ù ½Ã½ºÅÛÀÇ ¼³°è ¹× ±¸Çö
¿µ¹®Á¦¸ñ(English Title) Design and Implementation of a Sound Classification System for Context-Aware Mobile Computing
ÀúÀÚ(Author) ±èÁÖÈñ   À̼®ÁØ   ±èÀÎö   Joo-Hee Kim   Seok-Jun Lee   In-Cheol Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 03 NO. 02 PP. 0081 ~ 0086 (2014. 02)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®¿¡¼­´Â ½º¸¶Æ®Æù »ç¿ëÀÚÀÇ ½Ç½Ã°£ »óȲ ÀνÄÀ» À§ÇÑ È¿°úÀûÀÎ »ç¿îµå ºÐ·ù ½Ã½ºÅÛÀ» Á¦¾ÈÇÑ´Ù. ÀÌ ½Ã½ºÅÛÀº Àüó¸® °úÁ¤¿¡¼­ ÀÔ·Â »ç¿îµå µ¥ÀÌÅͷκÎÅÍ °í¿äÇÑ »ç¿îµå¿Í È­ÀÌÆ® ³ëÀÌÁ ¹Ì¸® ¿©°úÇعö¸²À¸·Î½á, Á¦ÇÑÀûÀÎ °è»ê ÀÚ¿øÀÇ ºÒÇÊ¿äÇÑ ¼Ò¸ð¸¦ ¸·À» ¼ö ÀÖ´Ù. ¶ÇÇÑ ¿¡³ÊÁö ·¹º§ÀÌ ³·Àº »ç¿îµå µ¥ÀÌÅ͵éÀº »çÀü¿¡ ÁõÆø½ÃÅ´À¸·Î½á, À̵鿡 ´ëÇÑ ºÐ·ù ¼º´ÉÀ» Çâ»ó½Ãų ¼ö ÀÖ´Ù. ¶Ç, Á¦¾ÈÇÏ´Â »ç¿îµå ºÐ·ù ½Ã½ºÅÛÀº HMM ºÐ·ù ¸ðµ¨ÀÇ È¿À²ÀûÀÎ ÇнÀ°ú Àû¿ëÀ» À§ÇØ k-Æò±Õ ±ºÁýÈ­¸¦ ÀÌ¿ëÇÏ¿© Ư¡ º¤Å͵鿡 ´ëÇÑ Â÷¿ø Ãà¼Ò¿Í ÀÌ»êÈ­¸¦ ¼öÇàÇÑ´Ù. ÇÑ ´ëÇÐ ¿¬±¸µ¿³» ÀÏ»ó»ýÈ°·ÎºÎÅÍ ¼öÁýÇÑ 8°¡Áö À¯ÇüÀÇ »ç¿îµå µ¥ÀÌÅÍ ÁýÇÕÀ» ÀÌ¿ëÇÏ¿© Á¦¾ÈÇÑ ½Ã½ºÅÛÀÇ ¼º´É ºÐ¼® ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ÀÌ ½ÇÇèÀ» ÅëÇØ º» ³í¹®¿¡¼­ Á¦¾ÈÇÑ »ç¿îµå ºÐ·ù ½Ã½ºÅÛÀº ³ôÀº ºÐ·ù ¼º´ÉÀ» º¸¿© ÁÖ¾ú´Ù.
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(English Abstract)
In this paper, we present an effective sound classification system for recognizing the real-time context of a smartphone user. Our system avoids unnecessary consumption of limited computational resource by filtering both silence and white noise out of input sound data in the pre-processing step. It also improves the classification performance on low energy-level sounds by amplifying them as pre-processing. Moreover, for efficient learning and application of HMM classification models, our system executes the dimension reduction and discretization on the feature vectors through k-means clustering. We collected a large amount of 8 different type sound data from daily life in a university research building and then conducted experiments using them. Through these experiments, our system showed high classification performance.
Å°¿öµå(Keyword) »óȲ ÀÎ½Ä ¸ð¹ÙÀÏ ÄÄÇ»Æà  »ç¿îµå ºÐ·ù   Àº´Ð ¸¶ÄÚÇÁ ¸ðµ¨   Context-Aware Mobile Computing   Sound Classification   Hidden Markov Model  
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