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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 : 3 / 5

ÇѱÛÁ¦¸ñ(Korean Title) ÁÖÆļö°¡Áß ½ºÆåÆ®·³¼ºÇüÇÊÅÍ¿Í À§³ÊÇÊÅ͸¦ °áÇÕÇÑ À½¼º ½ºÆåÆ®·³ °­Á¶
¿µ¹®Á¦¸ñ(English Title) Speech Spectrum Enhancement Combined with Frequency-weighted Spectrum Shaping Filter and Wiener Filter
ÀúÀÚ(Author) ÃÖÀç½Â   Jae-Seung Choi  
¿ø¹®¼ö·Ïó(Citation) VOL 20 NO. 10 PP. 1867 ~ 1872 (2016. 10)
Çѱ۳»¿ë
(Korean Abstract)
µðÁöÅнÅȣó¸® ºÐ¾ß¿¡¼­ ´Ù¾çÇÑ È¯°æ¿¡¼­ Á¸ÀçÇÏ´Â ¹è°æÀâÀ½À» Á¦°ÅÇÏ¿© À½¼º½ÅÈ£ÀÇ Ç°ÁúÀ» °³¼±½ÃÅ°´Â °ÍÀº ¹Ýµå½Ã ÇÊ¿äÇÑ ¹®Á¦ÀÌ´Ù. À½ÇâÇÐÀûÀ¸·Î ¹è°æÀâÀ½À» Á¦°ÅÇÒ ¶§ °í·ÁÇØ¾ß ÇÒ Áß¿äÇÑ Á¡Àº Àΰ£ÀÇ Ã»°¢±âÀüÀÌ ÁÖ·Î À½¼ºÀÇ ÁøÆø ½ºÆåÆ®·³ÀÇ Á¤º¸¿¡ ÀÇÁ¸ÇÏ¿© ¹®Á¦ ÇØ°áÀ» ÇÏ°í ÀÖ´Ù´Â »ç½ÇÀÌ´Ù. º» ³í¹®¿¡¼­´Â À½¼ºÀÇ ÁøÆø ½ºÆåÆ®·³ÀÇ ÃßÃâÀ» ÁÖ¿ä ¸ñÀûÀ¸·Î ÇÏ´Â ÁÖÆļö°¡Áß ½ºÆåÆ®·³¼ºÇüÇÊÅÍÀÇ Æ¯¼ºÀ» µµÀÔÇÑ´Ù. µû¶ó¼­ º» ³í¹®¿¡¼­´Â ¹è°æÀâÀ½À¸·Î ÁßøµÈ À½¼º½ÅÈ£ ¼ººÐ Áß¿¡ ÀÌ ÁøÆø ½ºÆåÆ®·³ Á¤º¸¸¦ ÃßÃâÇÏ¿©, À§³Ê ÇÊÅ͹ý°ú À½ÇâÇÐÀûÀÎ ¸ðµ¨¿¡ ÀÇÇÑ ÁÖÆļö°¡Áß ½ºÆåÆ®·³¼ºÇüÇÊÅ͸¦ »ç¿ëÇÑ ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. º» ½ÇÇè¿¡¼­´Â ½ºÆåÆ®·³ ¿Ö°î·ü(SD)¿¡ ÀÇÇÏ¿© Á¦¾ÈÇÑ ¾Ë°í¸®ÁòÀÇ Ãâ·Â SD°¡ ±âÁ¸ÀÇ ´Ù¸¥ ¹æ¹ý°ú ºñ±³ÇÏ¿© ¾à 5.28 dB ÀÌ»ó °³¼±µÇ¾ú´Ù.
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(English Abstract)
In the area of digital signal processing, it is necessary to improve the quality of the speech signal after removing the background noise which exists in a various real environments. The important thing to consider when removing the background noise acoustically is that to solve the problem, depending on the information of the human auditory mechanism is mainly the amplitude spectrum of the speech signal. This paper introduces the characteristics of a frequency-weighted spectrum shaping filter for the extraction of the amplitude spectrum of the speech signal with the primary purpose. Therefore, this paper proposes an algorithm using the methods of a Wiener filter and the frequency-weighted spectrum shaping filter according to the acoustic model, after extracted the amplitude spectral information in the noisy speech signal. The spectral distortion (SD) output of the proposed algorithm is experimentally improved more than 5.28 dB compared to a conventional method.
Å°¿öµå(Keyword) ½Åȣ󸮠  ÀâÀ½   ÁøÆø½ºÆåÆ®·³   ÁÖÆļö°¡Áß ½ºÆåÆ®·³¼ºÇüÇÊÅÍ   À§³ÊÇÊÅÍ   Signal processing   noise   amplitude spectrum   frequency-weighted spectrum shaping filter   Wiener filter  
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