
ÊÛǰµç»°
135-3656-7657
ÊÛǰµç»° : 135-3656-7657
¹ú¼Ò¸ßм¼ÊõÆóÒµ Ê¡¼¶×¨¾«ÌØÐÂÆóÒµ
×ÉѯÈÈÏߣº135-3656-7657 400-6333-661
Êý×ÖÊÓÆµÍ¼ÏñÊÇ×îÖØÒªµÄÐÅϢýÌåÖ®Ò»£¬Ëü¾ßÓÐÖ±¹Û¡¢Éú¶¯ºÍÄÚº·á¸»µÄÌØµã¡£µ«ÊÇ£¬ÓÉÓÚÊý×ÖͼÏñµÄÊý¾ÝÁ¿·Ç³£Ö®´ó£¬Õâ¸øÍ¼ÏñµÄ´æ´¢¡¢´«Ëͺʹ¦Àí¶¼´øÀ´ºÜ´óÀ§ÄÑ¡£½â¾öÕâÒ»ÎÊÌâ×î³£Óõķ½·¨ÊǽøÐÐÊý×ÖͼÏñѹËõ±àÂ룬ÔÚ±£Ö¤Í¼ÏñÖÊÁ¿µÄǰÌáÏ£¬×î´óÏ޶ȵؽµµÍͼÏñµÄÊý¾ÝÁ¿£¬ÒÔ¼õÉÙÊý¾Ý´æ´¢Á¿£¬½ÚÔ¼´«Ëͺʹ¦ÀíµÄʱ¼ä¡£
Äܹ»½øÐÐͼÏñѹËõµÄ»úÀíÖ÷ÒªÀ´×ÔÁ½¸ö·½Ãæ:Ò»ÊÇͼÏñÐźÅÖдæÔÚ×Å´óÁ¿µÄͳ¼ÆÈßÓࣨÈçÆµÆ×ÈßÓà¡¢¿Õ¼äÈßÓࡢʱ¼äÈßÓàµÈ£©¿É¹©Ñ¹Ëõ£¬ÕâÖÖÈßÓà¶ÈÔÚ½âÂëÖ®ºó¿ÉÎÞÊ§ÕæµØ»Ö¸´£»¶þÊÇÀûÓÃÈËÑÛµÄÊÓ¾õÉúÀíÈßÓ࣬ÈçÈËÑÛ¶ÔÉ«²ÊµÄ¸ßƵ·ÖÁ¿Ã»ÓжÔÁÁ¶ÈµÄ¸ßƵ·ÖÁ¿Ãô¸Ð£¬¶ÔͼÏñ¸ßƵ£¨Ï¸½Ú£©´¦µÄÔëÉù²»Ãô¸ÐµÈ£¬ÔÚ²»±»Ö÷¹ÛÊÓ¾õ²ì¾õµÄÈݼèÄÚ£¬Í¨¹ý¼õÉÙÐźŵľ«¶È£¬ÒÔÒ»¶¨µÄ¿Í¹ÛÊ§Õæ»»È¡Êý¾ÝѹËõ¡£
×î»ù±¾µÄͼÏñѹËõ±àÂë·½·¨ÓÐͳ¼Æ±àÂë¡¢Ô¤²â±àÂë¡¢±ä»»±àÂ룬ÒÔºóÓÖ³öÏÖÁË×Ó´ø±àÂë¡¢·ÖÐαàÂ롢С²¨±ä»»±àÂëµÈ¡£ÕâÀï½ö¶ÔÕâЩѹËõ±àÂë¼¼Êõ½øÐиÅÊö¡£
Ò»¡¢Í³¼Æ±àÂëͳ¼Æ±àÂëÊǸù¾ÝÏñËØ»Ò¶ÈÖµ³öÏÖ¸ÅÂʵķֲ¼ÌØÐÔ¶ø½øÐеÄѹËõ±àÂ룬»ò¸ù¾Ý¸÷¸öÐźÅÔ´·ûºÅ³öÏֵĸÅÂʲ»Í¬¶ø½øÐеĸÅÂÊÆ¥Åä±àÂë¡£ËüÔÚ²»ÒýÆðÈκÎÊ§ÕæµÄǰÌáÏ£¬¿ÉÒÔ½«´«ÊäÿһÐÅÔ´·ûºÅËùÐèµÄƽ¾ùÂ볤½µÖÁ×îµÍ¡£Í³¼Æ±àÂëÊÇʶ±ðÒ»¸ö¸ø¶¨µÄÂëÁ÷ÖгöÏÖÆµÂÊ×î¸ßµÄ±ÈÌØºÍ×Ö½Úģʽ£¬ÀûÓñÈÔʼ±ÈÌØ¸üÉٵıÈÌØÀ´¶ÔÆä±àÂë¡£Ò²¾ÍÊÇÆµÂÊÔ½µÍµÄģʽ£¬Æä±àÂëλÊýÔ½¶à£¬ÆµÂÊÔ½¸ßµÄģʽ±àÂëλÊýÔ½ÉÙ¡£
ͳ¼Æ±àÂëÊÇÎÞËðѹËõ£¨¼´ÎÞÊ§ÕæÑ¹Ëõ£©£¬Í¨³£¿É·ÖΪÁ½´óÀà¡£
£¨1£©Ä£Ê½Ìæ»»¡£Êdz£ÓÃÓÚÎı¾ÐÅÏ¢µÄ±àÂë¡£¶Ô¶à´Î³öÏÖµÄ×Ö·û£¬¼´³£¼û´ÊÓÃÒ»¸ö×Ö·ûÌæ´ú£¬È罫³öÏÖ“Communication”µÄµØ·½ÓÓC”Ìæ´ú£¬“Netwok”ÓÓN”Ìæ»»¡£
£¨2£©Huffman±àÂë¡£ÊÇÒ»ÖÖ³£¼ûµÄͳ¼Æ±àÂë¡£¶Ô¸ø¶¨µÄÊý¾ÝÁ÷£¬¼ÆËãÿ¸ö×ֽڵijöÏÖÆµÂÊ¡£¸ù¾ÝƵÂÊ±í£¬ÔËÓÃHuffmanËã·¨¿ÉÈ·¶¨·ÖÅä¸øÃ¿¸ö×Ö·ûµÄ×îСλÊý£¬È»ºó¸ø³öÒ»¸ö×îÓŵıàÂ룬´úÂë×Ö´«Èë´úÂë²¾¡£Huffman±àÂëÊÊÓÃÓÚѹËõ¾²Ì¬ºÍ¶¯Ì¬Í¼Ïñ¡£¸ù¾Ý²ÎÊý£¬¿É¶Ô¼¸¸ö»òÒ»×éͼÏñ¹¹Ôì³öÒ»¸öеĴúÂë²¾¡£ÔÚÔ˶¯Í¼ÏñÖУ¬¿ÉÖØÐ¼ÆËãÒ»¸ö»òһϵÁÐÖ¡µÄ´úÂë²¾¡£ÔÚËùÓÐÇé¿öÏ£¬¶¼±ØÐ뽫´úÂë²¾´ÓÔ´¶Ë´«µ½Ä¿±ê¶Ë²ÅÄܽøÐÐÒëÂë¡£ËüµÄÓŵãÊÇÄܺܺõØÓë´ú±àÂë·ûºÅµÄ¸ÅÂÊ·Ö²¼Æ¥Å䣬ʹƽ¾ùÂ볤´ïµ½×î¶Ì£»µ«ÆäÓ²¼þʵÏÖ½ÏΪ¸´ÔÓ£»±àÂëÒªÇóÈ·ÖªÐÅÔ´µÄͳ¼ÆÌØÐÔ£¬¼´¸÷ÐÅÔ´·ûºÅµÄ³öÏÖ¸ÅÂÊ£¬·ñÔò±àÂëЧÂÊÒªÃ÷ÏÔϽµ¡£
¶þ¡¢²î·Ö»òÔ¤²â±àÂëÔ¤²â±àÂë¾ÍÊÇÓüº¾±àÂë´«Ë͵ÄÏñËØ£¬Ô¤²âʵ¼ÊÒª´«Ë͵ÄÏñËØ¡£¼´´Óʵ¼ÊÒª´«Ë͵ÄÏñËØÖµÖмõÈ¥Ô¤²âµÄÏñËØÖµ£¬´«ËÍËüÃǵIJîÖµ£¬Òò¶øÒ²³ÆÎª²î·Ö±àÂë¡£ÏÔÈ»£¬´«ËͲîÖµ±È´«ËÍÔͼÏñÖµËùÐèµÄ±ÈÌØÂÊÒªµÍ¡£ÒòΪͼÏñ¸÷ÏñËØ¼ä´æÔÚ×ÅÇ¿ÁÒµÄÏà¹ØÐÔ£¬²ÉÓÃÔ¤²â±àÂë¿É¼õÉÙÏñËØ¼äµÄÏà¹ØÐÔ£¬Ìá¸ß´«ÊäЧÂÊ¡¢Ñ¹Ëõ±ÈÌØÂÊ¡£²î·Ö±àÂëÌØ±ðÊÊÓÃÓÚÆäÁ¬ÐøÖµÓëÁãÖµ²î±ðºÜ´ó¶ø±Ë´ËÖ®¼ä²îÒì²»´óµÄÐźš£Òò´Ë£¬Âë·Ç³£ÊÊÓÃÓÚÔ˶¯Í¼ÏñÐźţ¨Ëü½ö´«ËÍͼÏñµÄ²îÒ죩»òÒôƵÐźš£Ô¤²â±àÂëÓÐÎÞËðÔ¤²âÓëÓÐËðÔ¤²âÖ®·Ö¡£Êµ¼ÊÖÐÓÉÓÚÔ¤²âÖµµÄÈ·¶¨·½·¨²»Í¬£¬¸÷ÖÖÔ¤²â¼¼ÊõÒ²¾ÍÓÐËù²î±ð¡£
²î·Ö±àÂë¼¼ÊõÓÐ3´óÀࣺDPCM¡¢6µ÷ÖÆºÍADPCM¡£DPCM£¨²î·ÖÂö³å±àÂëµ÷ÖÆ£©£¬ÊÇÒ»ÖÖʵÓõÄÓÐËðÔ¤²â±àÂë¼¼Êõ£¬Ò²ÊÇ×îÔçµÄÒ»ÖÖÊý×ÖͼÏñѹËõ¼¼Êõ£¬ÆäÔÀíÊǵ±Ç°µÄÏñËØ¿ÉÓÉËüÁÚ½üµÄÏñËØÖµÔ¤²â¶øµÃ£¬Ò²¾ÍÊÇ˵£¬ÆäÈßÓà¶È¿ÉÓÉÁÚ½üµÄÏñËØÀ´È·¶¨¡£¾Ý´Ë£¬ÔÙ¶Ôµ±Ç°µÄÏñËØºÍÔ¤²âÏñËØµÄ²îÖµ½øÐÐÁ¿»¯¡¢±àÂë¡£¿¼Âǵ½ÔÚ¸ßÐÔÄܺ͸´ÔÓÐÔÖ®¼äµÄÕÛÖУ¬Í¨³£ÓÃÓÚÖ¡ÄÚÔ¤²â£¨¶þάԤ²â£©µÄÁÚ½üÏñËØµÄ¸öÊý²¢²»¶à.£¨²»³¬¹ý4¸ö£©£¬Ê¹Óøü¶àµÄÏñËØ²¢²»ÄÜ»ñµÃÔ¤²âÐÔÄܵÄÏÔÖø¸Ä½ø¡£¶ÔÓÚÖ¡¼äÔ¤²â£¨ÈýάԤ²â£©£¬Ò»°ãÖ»ÓÃÏàÁÚÖ¡µÄ¶ÔÓ¦ÏñËØ½øÐÐÔ¤²â¡£Í¼ÏñµÄÏà¹ØÐÔÔ½´ó£¬ÆäÔ¤²âÎó²îԽС£¬È¡µÃµÄѹËõ±ÈÒ²Ô½´ó¡£DPCMÏà¶Ô˵À´ÊÇÒ»ÖֱȽÏÈÝÒ×ʵÏÖµÄѹËõ·½·¨£¬µ«ÔڽϵÍËÙÂÊʱÆäѹËõÄÜÁ¦Ò»°ã²»ÈçÏÂÃæµÄ±ä»»±àÂëºÃ¡£
Èý¡¢±ä»»±àÂëÔ¤²â±àÂëÊÇÖ±½ÓÔÚ¿ÕÓò¶ÔͼÏñ½øÐÐѹËõ´¦ÀíµÄ£¬¶ø±ä»»±àÂëÏ൱ÓÚÔÚÆµÓò½øÐÐѹËõ´¦Àí¡£±ä»»±àÂëµÄ»ù±¾ÔÀíÊÇͨ¹ýÕý½»º¯Êý°ÑͼÏñ´Ó¿Õ¼äÓòת»»ÎªÄÜÁ¿±È½Ï¼¯Öеı任Óò£¬È»ºó¶Ô±ä»»ÏµÊý½øÐÐÁ¿»¯ºÍ±àÂ룬´Ó¶ø´ïµ½Ëõ¼õÊýÂëÂʵÄÄ¿µÄ¡£Òò´Ë£¬±ä»»±àÂëÒ²³ÆÕý½»±ä»»±àÂë¡£¶ÔÓÚ´ó¶àÊý×ÔÈ»½çͼÏñ±ä»»µÃµ½µÄ±ä»»ÓòµÄϵÊý£¬ÓÐЩֵºÜС£¬ÕâЩϵÊý¿É½Ï´ÖµØÁ¿»¯£¬»òÉõÖÁÍêÈ«ºöÂÔµô¶øÖ»²úÉúºÜСµÄÊ§Õæ¡£ËäÈ»Ê§ÕæºÜС£¬µ«ÐÅÏ¢ÈÔÓÐËðʧ£¬Òò¶ø±ä»»±àÂëÊÇÓÐËðѹËõ±àÂë·½·¨¡£±ä»»±àÂëÊÇÒ»ÖÖÔ´±àÂë·½·¨£¬¶øÔ´±àÂëÒª¿¼ÂDZ»Ñ¹ËõÐźŵÄÐÔÖÊ£¬ÌØ„eÊÇËüÓÐÀµÓÚÒôƵ¡¢¾²Ì¬Í¼ÏñºÍ¶¯Ì¬Í¼ÏñµÄÌØÕ÷¡£