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¿µ¹®Ç¥Áظí Korean sound source for wide band/super wide band speechcodec voice service quality measurement
Çѱ۳»¿ë¿ä¾à º» Ç¥ÁØÀº °³¹ßµÈ Çѱ¹¾î Ç¥ÁØ À½¿øÀÇ Á¾·ù¿Í Ư¡À» ¼Ò°³ÇÑ´Ù. Çѱ¹¾î À½¿øÀº ³²¼º°ú ¿©¼º ¸ñ¼Ò¸®¸¦ È¥ÇÕÇÑ ÇüÅ·Π6ÃÊ ±æÀÌ¿Í 8ÃÊ ±æÀ̸¦ Á¦°øÇÑ´Ù. ¸ðµç ÂüÁ¶ À½¿øÀº Çù´ë ¿ª(NB, Narrow Band), Çù´ë¿ª IRS(NB IRS, Narrow Band Intermediate Reference System), ±¤´ë¿ª (WB, Wide Band), ±×¸®°í Ãʱ¤´ë¿ª(SWB, Super Wide Band) ÀÀ¿ëÀ» À§ÇÑ ¹öÀüÀÌ ÁغñµÇ¾î ÀÖ´Ù. ¶ÇÇÑ ÇÊÅ͸µÀ» °ÅÄ¡Áö ¾ÊÀº ¿ø ½ÅÈ£µµ Á¦°øµÈ´Ù. PESQ ¹æ½ÄÀ» »ç¿ëÇØ À½¼º Ç°ÁúÀ» ÃøÁ¤ÇÒ °æ¿ì Çù´ë¿ª°ú ±¤´ë¿ª À½¿øÀ» »ç¿ëÇÒ ¼ö ÀÖÀ¸¸ç, POLQA ¹æ½ÄÀ» »ç¿ëÇØ À½¼º Ç°ÁúÀ» ÃøÁ¤ÇÒ °æ¿ì Çù´ë¿ª, ±¤´ë¿ª ¹× Ãʱ¤´ë¿ª À½¿øÀ» »ç¿ëÇÒ ¼ö ÀÖ´Ù. À½¼º Ç°Áú ÃøÁ¤ ½Ã¿¡ ÂüÁ¶ À½¼º¿¡ »ç¿ëµÈ ¾ð¾î, È­ÀÚÀÇ ¼ºº°, ±×¸®°í °³Àκ° Ư¼º¿¡ µû¶ó Ç°Áú Â÷ÀÌ°¡ Á¸ÀçÇÔÀ» Á¦½ÃÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à This standard describes the characteristics of different versions of Korean reference speech samples developed. All samples exist filtered for narrowband (NB), wideband (WB) and super-wideband (SWB) applications, as well as IRS filtered. The unfiltered source signals are also provided. All samples are provided as 6 seconds and as 8 seconds long versions in which one sentence spoken by a female speaker and the other by a male speaker. The speech samples of NB and WB are used with PESQ, and the speech samples of NB and SWB are used with POLQA. It is shown that MOS scores achieved with objective metrics like PESQ and POLQA depend on the speech samples used where different languages and male/female pairs are used.
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