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ÇѱÛÇ¥ÁØ¸í ±¤´ë¿ª(150~7000Hz) µðÁöÅÐ ÇÚµåÇÁ¸® ÀüÈ­±âÀÇ Àü¼ÛƯ¼º
¿µ¹®Ç¥Áظí Transmission Characteristics for wideband (150~7000Hz) digital hands-free telephony terminals
Çѱ۳»¿ë¿ä¾à º» Ç¥ÁØÀº 300 ~ 3,400HzÀÇ ÀüÈ­´ë¿ªÀ» 150 ~ 7,000HzÀÇ ´ë¿ªÀ¸·Î È®ÀåÇÑ ¿Àµð¿À ´ë¿ª Àü¼Û¿ë ÇÚµåÇÁ¸® ÀüÈ­±â¿¡ ´ëÇÑ ¿Àµð¿À ¼º´É ±âÁØÄ¡¿Í ÃøÁ¤¹ýÀ» ±ÔÁ¤ÇÏ°í ÀÖ´Ù º» Ç¥ÁØ¿¡¼­ Á¦½ÃÇÑ ±âÁØÄ¡´Â 64kbit/s ºÎȣȭ¸¦ ÀÌ¿ëÇÑ ÀüÈ­±â¿¡ ±âº»ÀûÀ¸·Î Àû¿ëµÉ ¼ö ÀÖÁö¸¸, ´Ù¸¥ È®´ë¿ª ¿Àµð¿À ºÎȣȭ ±¸Á¶¿¡ ´ëÇÑ ±âÁØÄ¡·Îµµ »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù. ÀÌ ¹®Á¦¿Í È®´ë¿ª À½·®Á¤°Ý¿¡ ´ëÇؼ­´Â ITU-T SG12¿¡¼­ ÇöÀç ¿¬±¸ÁßÀÌ´Ù. º» Ç¥ÁØÀº ±âÁ¸ÀÇ 300 ~3,400Hz ÀüÈ­ ´ë¿ª¿¡¼­ 150 ~ 7,000Hz ´ë¿ª±îÁö È®ÀåµÇ¾î ¿Àµð¿À ´ë¿ªÀ» Àü¼ÛÇÒ ¼ö ÀÖ´Â È®´ë¿ª ÇÚµåÇÁ¸® ÀüÈ­±âÀÇ ¼º´ÉÀ» ÃøÁ¤ÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» ±â¼úÇÑ´Ù. ÀÌ·¯ÇÑ È®´ë¿ª ÇÚµåÇÁ¸® ÀüÈ­±âÀÇ ¼º´ÉÀ» ÃøÁ¤Çϱâ À§ÇÏ¿© Àü±âÀû ÀÎÅÍÆäÀ̽º »ç¾ç, Àü±â À½Çâ ÃøÁ¤, ¼Û¼öÈ­ À½Çâ ÃøÁ¤, ¿¡ÄÚ °æ·Î ¼Õ½Ç ÃøÁ¤ ¹× Áö¿¬ ÃøÁ¤¿¡ °ü·ÃµÈ ³»¿ëÀ» Á¤ÀÇÇÏ°í ±â¼ú ÇÏ¿´´Ù.
¿µ¹®³»¿ë¿ä¾à This Recommendation provides audio performance requirements and test methods for hands-free telephones capable of transmitting an audio bandwidth extending beyond the conventional telephony bandwidth of 300 to 3400 Hz, to a bandwidth of approximately 150 to 7000 Hz. The requirements listed in this Recommendation are primarily applicable to telephones using G.722 encoding at 64 kbit/s, but should also be used as the basis of requirements for other wideband audio encoding schemes. This is still under study in ITU-T Study Group 12. To measure the transmission characteristics for a wideband digital hands-free telephony terminal, this recommendation describe an allowance scope and method of electrical interface specification, electro-acoustic measurement consideration, sending and receiving characteristic, echo path loss and delay measurement.
±¹Á¦Ç¥ÁØ ITU-T P.341
°ü·ÃÆÄÀÏ TTAE_IT-P341.zip TTAE_IT-P341.zip            
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Á¦Á¤ 1997-12-04 TTAS.IT-P341
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