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Ç¥ÁعøÈ£ TTAS.KO-01.0077 ±¸Ç¥ÁعøÈ£
Á¦°³Á¤ÀÏ 2005-12-21 ÃÑÆäÀÌÁö 21
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¿µ¹®Ç¥Áظí Voice Quality Criteria of Internet Telephony
Çѱ۳»¿ë¿ä¾à º» Ç¥ÁØÀº ÀÎÅͳÝÀüÈ­ ÅëÈ­Ç°ÁúÀ» À§ÇÑ ÁöÇ¥·Î½á E-¸ðµ¨ÀÇ R°ª, Á¾´Ü°£ Áö¿¬, È£¼º°ø·ü·Î ±ÔÁ¤ÇÑ´Ù. ÇöÀç ÀÎÅÍ³Ý È¯°æÇÏ¿¡¼­ ÀÎÅͳÝÀüÈ­ ÅëÈ­ Ç°Áú ÁöÇ¥·Î½á ÀϹÝÀûÀ¸·Î ¹Þ¾Æµé¿©Áö°í ÀÖ´Â ITU-T G.107¿¡ ±Ù°ÅÇÑ E-¸ðµ¨ÀÇ R °ªÀ» »ç¿ëÇÑ´Ù. E-¸ðµ¨Àº 3.1 Khz ÇÚµå¼Â ÀüÈ­ÀÇ ÅëÈ­ Ç°Áú¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ¸î °³ÀÇ Àü¼Û ÆĶó¹ÌÅÍÀÇ °áÇÕµÈ È¿°ú¸¦ Æò°¡ÇÒ ¼ö ÀÖÀ¸¸ç, ¸ðµ¨ÀÇ °á°ú°ªÀº Ç°Áú¿¡ ´ëÇÑ °í°´ ÀÇ°ß °ªÀ» Á¦°øÇÒ ¼ö ÀÖ´Ù.º» Ç¥ÁØÀº À̸¦ À§ÇØ E-¸ðµ¨ ±â¼ú¿¡ ´ëÇØ ¿ä¾àÇÏ°í, ÀÎÅͳÝÀüÈ­ ÅëÈ­Ç°Áú ÁöÇ¥ ¹× ±âÁØÀ» ±ÔÁ¤ÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à This standard clarify E-model R-value, end-to-end delay, call success rate for the criteria of speech quality of internet telephony. This standard uses E-model for Voice quality measurement method which is adapted for voice quality measure in general. Emodel could access the combined effects of variations in several transmission parameters that affect conversational quality of 3.1 KHz handset telephony, and the prime output of the model can be transformed to give estimates of customer opinion about voice quality. This standard will summarize E-model and clarify the voice quality criteria and basic value for internet telephony.
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