|
ÏÈ˵½áÂÛ£º
1.ÎÒÃDz¢²»ÐèÒª¾¡¿ÉÄܵ͵Ķ¶¶¯£¬ÒòΪÎÒÃÇÖ»ÄÜÌýµ½ns¼¶±ðµÄ¶¶¶¯¡££¨¼û²Î¿¼ÂÛÎĶþ£©
2.È˶úÖ»ÄÜÌýµ½ÄÉÃëns¼¶±ðµÄ¶¶¶¯¡£ÒòΪ²»Í¬µÄÑо¿£¬Õë¶Ô²»Í¬µÄÈËȺ£¬Ê¹Óò»Í¬µÄ»Ø·Å·¾¶£¬»¹Óв»Í¬µÄãÐÖµÅж¨·½·¨£¬¶¶¶¯µÄ¿ÉÎÅãÐÖµÔÚ´óÔ¼30ns-500nsÖ®¼ä¡££¨¼û²Î¿¼¶þºÍÈý£©
3.ÔÚһЩ´«Í³CDµÄÄÚÈÝÖУ¬ÒѾ¹Û²ìµ½¶¶¶¯±ØÐëСµ½121.4ps²ÅÄܱ£³Ö16±ÈÌصķֱæÂʺÍ20KhzµÄÒôƵ¡£ÕâÔ¶Ô¶µÍÓÚ¼ì²âµÄãÐÖµ¡£NishimuraºÍKoizumiÊÔͼ²âÁ¿¸÷ÖÖDAϵͳÔÚÖØ·ÅÒôÀÖÐźÅʱµÄʵ¼Ê¶¶¶¯¡£ËûÃÇÔÚ²âÁ¿ÖÐÎÞ·¨¼ì²âµ½ÈκδóÓÚ3nsµÄ¶¶¶¯¡£µ½Ä¿Ç°ÎªÖ¹£¬Ïû·ÑÀà²úÆ·µÄʵ¼Ê¶¶¶¯Ëƺõ̫СÁË£¬ÖÁÉÙÔÚÒôÀÖÐźŵÄÖØÏÖÖÐÎÞ·¨¼ì²âµ½¡££¨¼û²Î¿¼ÂÛÎĶþÄÚÈÝ£©
²Î¿¼ÂÛÎÄÒ»£º¡¶Theoretical and Audible Effects of Jitter on Digital Audio QualityÊý×ÖÒôƵÖ涶¯µÄÀíÂÛÓ°ÏìºÍ¿ÉÎÅÓ°Ïì¡·, Pre-print 4826 of the 105th AES Convention, San Francisco, September 1998. Eric Benjamin and Benjamin Gannon
ÕâÊÇAESµÄÕýʽÂÛÎÄ£¬ÐèÒªÊշѲÅÄÜÏÂÔØ£¬ÄÚÍâÍøÉÏҲûÓÐÕÒµ½ÔÎÄPDFÏÂÔØ£¬µ«ÊÇÀïÃæµÄÑо¿½áÂÛÔÚÏÂÃæµÄÁ½¸öÑо¿ÖоùÌáµ½ÁË¡£
²Î¿¼ÂÛÎĶþ£º ¡¶Detection threshold for distortions due to jitter on digital audioÊý×ÖÒôƵÖ涶¯µ¼ÖµÄʧÕæ¼ì²âãÐÖµ¡·-Kaoru Ashihara1;, Shogo Kiryu1, Nobuo Koizumi2, Akira Nishimura2,Juro Ohga3, Masaki Sawaguchi4 and Shokichiro Yoshikawa5- 2004Äê
±¾Ñо¿ÖеÄ23ÃûÌýÖÚÊÇÒôƵרҵÈËÔ±»ò°ëרҵÈËÔ±£¬ËûÃÇÓ¦¸ÃÊÇѵÁ·ÓÐËصÄÌýÖÚ£¬ËûÃÇÊÇÒôƵ¹¤³Ìʦ¡¢ÒôƵÆÀÂÛ¼Ò¡¢ÒôÏ칤³ÌʦºÍÒôÀÖ¼Ò¡£ãÐÖµÊǸù¾ÝÌýÖÚÔÚ¶þѡһǿÆÈÑ¡Ôñ·¶Ê½Öеıæ±ð·ÖÊýÀ´¹À¼ÆµÄ¡£
ÌýÖÚ±»ÔÊÐíʹÓÃËûÃÇ×Ô¼ºµÄÌý¾õ»·¾³£¨Ê¹ÓÃÒôÏ䣩ºÍËûÃÇϲ»¶µÄÉùÒô²ÄÁÏ¡£½á¹û±íÃ÷£¬¶ÔÓÚѵÁ·ÓÐËصÄÌýÖÚÀ´Ëµ£¬ÔÚËûÃÇϲ»¶µÄÌý¾õÌõ¼þÏ£¬Ëæ»ú¶¶¶¯µÄ¼ì²âãÐֵΪ250ns-500nsÖ®¼ä¡£
²Î¿¼Èý£º¡¶Jitter Theory ¶¶¶¯ÀíÂÛ¡· - by Julian Dunn 2000Äê(¾ÍÖ°ÓÚAPÒôƵ²âÁ¿Òǹ«Ë¾)£¬ÎÄÖÐÒýÓÃÁËÂÛÎÄÒ»µÄÄÚÈÝ
ÔÚµÍƵʱ£¬Õâһˮƽ´óÓÚ100 ns£¬ÔÚ100 HzÒÔÉÏÓÐÒ»¸ö¼±¾çµÄ½ØÖ¹£¬ÔÚ500 HzʱÓÐÒ»¸ö´óÔ¼1 ns£¨·åÖµ£©µÄÏÂÏÞ¡£
ÒÔÉϲο¼ÎÄÕÂÖеĺóÁ½¸ö¿ÉÒÔÏÂÔØÔÎÄ£¬µÚÒ»¸ö¿ÉÒÔÔÚAES¹ÙÍøÉϲ鵽ÂÛÎĸÅÒª¡£
¹ØÓÚJitter¶¶¶¯µØ»°Ì⣬ÁíÍâÒ»¸öÂÛ̳2016Ä꡶ʾ²¨Æ÷²âÊÔµçÄÔÄÚÖÃÊý×ÖÒôƵÊä³öµÄJITTER£¨¶¶»Î£©¡·Ò»ÎÄ£¬ÓйýÏêϸµØÌÖÂÛ£¬²»¹ý²¢Ã»ÓÐÉîÈëÉæ¼°µ½¶¶¶¯¿ÉÌýãÐÖµÑо¿¡£
ÎÒÊÇÐÂÊÖ£¬Èç¹ûÒÔÉÏÓв»¶ÔµÄÄÚÈÝ£¬Çë´ó¼ÒÅúÆÀÖ¸Õý¡£
|
|