• Àüü
  • ÀüÀÚ/Àü±â
  • Åë½Å
  • ÄÄÇ»ÅÍ
´Ý±â

»çÀÌÆ®¸Ê

Loading..

Please wait....

±¹³» ³í¹®Áö

Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) GSC ±â¹Ý ºöÆ÷¹ÖÀ» À§ÇÑ ÁÖÆļö ¹êµåº° Àü·Âºñ ºÐÆ÷ÀÇ È¥ÇÕ °¡¿ì½Ã¾È ¸ðµ¨À» ÀÌ¿ëÇÑ ¸ñÇ¥ À½¼º½ÅÈ£ÀÇ °ËÃâ
¿µ¹®Á¦¸ñ(English Title) Target Speech Detection Using Gaussian Mixture Model of Frequency Bandwise Power Ratio for GSC-Based Beamforming
ÀúÀÚ(Author) ÀåÇü¿í   ±è¿µÀÏ   Á¤»ó¹è   Hyungwook Chang   Youngil Kim   Sangbae Jeong  
¿ø¹®¼ö·Ïó(Citation) VOL 19 NO. 01 PP. 0061 ~ 0068 (2015. 01)
Çѱ۳»¿ë
(Korean Abstract)
´Ù¾çÇÑ Á¾·ùÀÇ ÀâÀ½¿¡ ÀÇÇؼ­ ¹ß»ýÇÏ´Â À½¼ºÀÎ½Ä ¼º´É ÀúÇϸ¦ º¸»óÇϱâ À§Çؼ­´Â ÀâÀ½Á¦°Å°¡ ÇʼöÀûÀÌ´Ù. ¸¶ÀÌÅ©·ÎÆù ¹è¿­À» ÀÌ¿ëÇÏ´Â ¸¹Àº ÀâÀ½Á¦°Å ±â¼ú Áß¿¡¼­, GSC´Â ºñÁ¤»ó¼º ÀâÀ½À» Á¦°ÅÇϱâ À§Çؼ­ ³Î¸® Àû¿ëµÇ¾î ¿Ô´Ù. GSCÀÇ ¼º´ÉÀº AMC¿¡ ÀÇÇؼ­ Á÷Á¢ÀûÀÎ ¿µÇâÀ» ¹Þ´Â´Ù. Áï, Á¤È®ÇÑ ¸ñÇ¥ À½¼º ½ÅÈ£ÀÇ °ËÃâÀº ¼ø¼ö ÀâÀ½±¸°£¿¡¼­ÀÇ ÃæºÐÇÑ ÀâÀ½Á¦°Å ¹× ¸ñÇ¥ À½¼º±¸°£¿¡¼­ÀÇ ÀûÀº ¿Ö°îÀ» º¸ÀåÇϱâ À§Çؼ­ ÇʼöÀûÀÌ´Ù. µû¶ó¼­, º» ³í¹®¿¡¼­´Â °íÁ¤ ºöÆ÷¹ÖÀÇ Ãâ·Â°ú Â÷´Ü ¸ÅÆ®¸¯½ºÀÇ Ãâ·Â°£ÀÇ Àü·Âºñ°¡ ÁÖÆļö ¹êµå ´ÜÀ§·Î °è»êµÇ´Â Çâ»óµÈ AMC ¼³°è¹ýÀ» Á¦¾ÈÇÑ´Ù. ±× ÈÄ, ¹êµåº° Àü·Âºñ´Â °¡¿ì½Ã¾È È¥ÇÕ¿¡ ÀÇÇؼ­ °¢ Ŭ·¡½º°¡ È®·üÀûÀ¸·Î ¸ðµ¨¸µ µÈ´Ù. ½ÇÇè°á°ú, Á¦¾ÈÇÑ ¾Ë°í¸®ÁòÀÌ ROC ¹× Ãâ·Â SNR °üÁ¡¿¡¼­ ´õ ³ôÀº ¼º´ÉÀ» º¸¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
Noise reduction is necessary to compensate for the degradation of recognition performance by various types of noises. Among many noise reduction techniques using microphone array, generalized sidelobe canceller (GSC) has been widely applied to reduce nonstationary noises. The performance of GSC is directly affected by its adaptation mode controller (AMC). That is, accurate target speech detection is essential to guarantee the sufficient noise reduction in pure noise intervals and the less distortion in target speech intervals. Thus, this paper proposes an improved AMC design technique in which the power ratio of the output of fixed beamforming to that of blocking matrix is calculated frequency bandwise and probabilistically modeled by mixture Gaussians for each class. Experimental results show that the proposed algorithm outperforms conventional AMCs in receiver operating curves (ROC) and output SNRs.
Å°¿öµå(Keyword) ÀâÀ½Á¦°Å   ¸¶ÀÌÅ©·ÎÆù ¹è¿­   ÀϹÝÈ­µÈ ºÎ±Ø Á¦°Å±â   noise reduction   microphone array   generalized sidelobe canceller  
ÆÄÀÏ÷ºÎ PDF ´Ù¿î·Îµå