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¿µ¹® Ç¥Áظí Transmission characteristics for wideband (150-7000 Hz) digital handset telephones
ÇÑ±Û ³»¿ë¿ä¾à º» Ç¥ÁØÀº ±¤´ë¿ª ¿Àµð¿À(7kHz) ÀüÈ­ÀåÄ¡¿¡ ´ëÇÑ ¼º´É ¿ä±¸ Á¶°ÇÀ» Á¦°øÇϸç, ±¤´ë¿ª ¿Àµð¿À ¼º´ÉÀ» °ËÁõÇÏ´Â ½ÃÇè ¹æ¹ýÀº ºÎ·Ï A¿¡ ±â¼úµÇ¾î ÀÖ´Ù. ¿ä±¸»çÇ×°ú ½ÃÇè ¹æ¹ýÀº ·¹º§, Á֯ļö ÀÀ´ä, ÀâÀ½, ¿Ö°î, À§Á¶ ½ÅÈ£, ÃøÀ½, ¹ÝÇâ °æ·Î, Áö¿¬À» Æ÷ÇÔÇÑ ±¤´ë¿ª ¿Àµð¿À¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ÁÖ¿ä ¿Àµð¿À Àü¼Û ÆÄ¶ó¸ÞÅÍ¿¡ ´ëÇØ¼­ ±ÔÁ¤ÇÑ´Ù. ÀÌ °³Á¤ÆÇÀÇ ÁÖ¿ä °³Á¤ ³»¿ëÀº ITU-T P.79 ºÎ·Ï G¿¡ ±â¼úµÈ ±¤´ë¿ª À½·® Á¤°ÝÀ» ¼ö¿ëÇÑ °ÍÀÌ´Ù.
¿µ¹® ³»¿ë¿ä¾à This standard provides audio performance requirements for wideband audio (7 kHz)handset telephones. Associated test methods for verifying wideband audio performance are contained in Annex A. Requirements and test methods are specified for the major audio transmission parameters affecting wideband audio, including levels, frequency response, noise, distortion, spurious signals, sidetone, echo path and delay.The main revision encompassed by this version of the standard is to adopt the wideband loudness rating algorithm as in Annex G/P.79.
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