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Elite Member
![]() ![]() ![]() ![]() ![]() ¥[¤J¤é´Á: Jul 2001
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§A¤@¼Ë»~·|¡A§Ú¥Î·sª©ªºRMAA¦n¤@°}¤l¤F¡C ¦b«e¤@po¤å¡A§Ú§Y´£¹L¨C¤@®æªº³æ¦ì¤£¦P¡F§Úª¾¹D·sª©ªº¬Ox¶b»PY¶bªº¨è«×³£¥i¥H½Õ¡A´N¹³scope¥i¥H§ïÅܳæ¦ì¡C¥H§CÀW¨Ó»¡¡A§A¹ïÀ³¤@¤U¨â±i¹Ïªº§CÀW-0.5db³Bªº®t²§¡C¥H°ªÀW¨Ó¬Ý¡A§Ú¥u¬O¥H44.1/48¨Ó´ú¡A22Khz¥ª¥k´N¨S¤F¬O¥¿±`ªº¡A¦ý§Apoªº¹Ï¬O¥H192¨Ó´ú¡A°ªÀW´Nºâ¦A®t¡A¤]¤£¥i¯à»P44.1/48¤@¼Ë¸¨¦b20khz¥ª¥k¡C Rebecca¬O³â¥z»Pµ®Ä¥d§¹¥þ¬O¨â¥ó¨Æ¡C¦pªG³æÅé¥i¥H°µ¥X±µªñ§Apoªº¨º±ø½u¡A¨º¥i¥H¥X°ê¤ñÁɤF¡F«á¯Åªº¿é¥X¤£»¡¡Aµ®Ä¥d»P«e¯ÅªºÅTÀ³ÀW²vÀ³¸Ó¨S¨º»ò®t¡B¨âºÝÀW²v°I´î¤]¤£À³¨º»ò§Ö¡A°£¤F¬O¨è·N½Õµ¤§¥~¡A¨º¬O³]p¤£¨}§a¡C §Ú³Ì¦¦bª±RMAA¡A¤]µo¥Í»P§AÃþ¦üªº±¡ªp¡A´ú¥X¨Óªº¡u¼Æ¾Ú¡v¬Ookªº¡A¦ýÅTÀ³ÀW²vªº¦±½u«D±`®t¡F¼Æ¾Ú«Ü´Î¡B¦±½u¤£¦n¬Ý¡C«á¨Ó¬O¦b¼Æ¦ìµ¼Ö¤u§@«Çªººô¯¸¤W¬Ý¨ìÃþ¦üªº°Q½×¡A¤~ª¾¬O³]©wªº°ÝÃD¡A»Panalog inªºloopback¦³Ãö¡C §A¦³®É¶¡ªº¸Ügoogle¤@¤U¡A§Úµo²{ºô¸ô¤W¥Hrmaa´ú¥X¨ÓªºÅTÀ³ÀW²v¦³«Ü¥ª½¡B¤]¦³Ãþ¦ü§A¨º¼Ëªº¡A¦ý¤j³¡¤Àªº¤H´Nª½±µ¬Ýº}«Gªº¡u¼Æ¾Ú¡v¡F¥t¤@Ó±`¨£ªº°ÝÃD¡A¦êµ¡ARMAAµ¹ªº¼Æ¾Ú»P¹ê»Úªº¦±½u¥i¯à¬O«Ü·¥ºÝ¡ARMAAµ¹ªº¡u±o¤À¡v«Ü°ª¡A¦ý¹ê»Ú¤W¦b¨C¤@ÀW¬qªºªi°Ê«o«Ü¤j¡C ·|¦³³o»òGYªººA«×¡A¬O¦]¬°§Ú¥ý«e¦bª±«e¯Åªºop®É¡A´¿µo¬YµPªºOP·|¦³³o°ÝÃD¡G¦P¤@§åOP±µ¤W¤@¼Ò¤@¼Ëªº«e¯Å¡]«Ü²³æªº6¿©ñ¤j¡B¦³¸ÉÀv¹q®eªº½u¸ô¡^¡A¦³ªº¬O¥ª½ªº¡B¦³ªº¬O·|¦³·L·Lªºªi°Ê¡A¦ý§ï©ñ¦bbuffer¡B©Îdc-servo¤W¤S§¹¥þ¥¿±`¡C«á¨Ó¦b¸ÓµPªºforumª¦¤å¤~µo²{¡A¯u¦³Ãþ¦üªº±¡ªp¡C¦b§AªºcaseùØ¡AY§Aªºrmaa´ú¸Õ³]©w¨S½Õ¦n¡AÀ³¸Ó«ÜÃø¸Õ¥X¦³°ÝÃDªºOP...... |
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Elite Member
![]() ![]() ![]() ![]() ![]() ¥[¤J¤é´Á: Dec 2003 ±zªº¦í§}: °°¤jÄG¤l¦B¤HXD
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Elite Member
![]() ![]() ![]() ![]() ![]() ¥[¤J¤é´Á: Jul 2001
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Hi, Ãö©ó²Ä1ÂI¡A§AÁ¿ªº«Ü¦³¹D²z¡A³o³¡¤ÀÀ³¸Ó»PLPF³]©wªººI¤îÂI¦³Ãö¡C¤£¹L¡A§ÚÁÙ¨S¬Ý¹L¦³§âLPFªº°ªÀWºI¤îÂI¨î¦¨¨º»ò§Cªºµ®Ä¥d¡A»{¯u¨Ó»¡¡A»PADCªº³W®æ¼vÅT·|¤ñ¸û¤j¡C§Ú¦Û¤vªº´ú¸Õ¸gÅçùØ¡ARMAA¿é¥Xªºµ²ªG·|¬O§A³]©wÀW²vªº1¥b¡]192¨Ò¥~¡A¦]¬°ADC¨î¡^¡A¤U±¤TÓ´ú¸Õµ²ªG¬O¼Æ¦ì¹q¤l¤u§@«Ç°w¹ï¦P¤@±iµ®Ä¥d¦b192¡B 96¡B 48¡A¹ï©¤«Ü·R´úªº¨ºÓºô¯¸§Ú´N¤£po¤F¡A´ú¥X¨Óªºµ²ªG»P§Úªº¸gÅç¬O¬Û¦Pªº¡C Ãö©ó²Ä2ÂI¡A¤pÃa³J¥S¡A¨ºÓ¡u¥ª½¡v´N¬O¤Àµ¾¹¸Ó°µªº¨Æ¡C¥Ñ§Apoªº¹Ï¨Ó¬Ý¡ARebecca 3«Ü§¹¬ü¡CÃD¥~¸Ü¡A¨º¹ï³â¥zªºµû»ù«Ü¨â·¥¡A§Ú¤J¤â¤@¶g«á´N¥X±¼¤F¡C¦ý¡A¨S·Q¨ì¥¦³æÅ骺»Î±µ°µªº³o»ò¦n¡C Ãö©ó²Ä3ÂI¡A¨ä¹ê´N¬O§Ú¤@ª½Ä±±o©Ç²§ªº¡C¥[¤W²Ä1ÂI¡A§ÚÁö¨S¥Î¹LThunderbolt¡A¦ý¥¦ªºªí²{À³¸Ó«ÜÀu¡A©Ò¥H¡A§Ú·|¶É¦V»{¬°ÁÙ¬O¡u³]©w¡vªº°ÝÃD¡C¤âÃä¦pªG¨S¦³¨ä¥¦ªºµ®Ä¥d¡A¤]¥i¦Ò¼{¥Î¥D¾÷ªOon boardªº¨Ó¸Õ¸Õ¡C²¦³º¡A¥ý¬ã¨s¬OµwÅé¨î¡BÁÙ¬O³]©w°ÝÃD¡C ¥H¤W¡A§Æ±æ¨S³y¦¨§Aªº§xÂZ¡C |
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Elite Member
![]() ![]() ![]() ![]() ![]() ¥[¤J¤é´Á: Dec 2003 ±zªº¦í§}: °°¤jÄG¤l¦B¤HXD
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1. §Ú¬O¤£±Æ°£¤]¦³¥i¯à¬OThunderbolt¥»¨¦b§@¨V¨ú¿é¤J°T¸¹®É¡A´N¦³§@filter¡A¬å±¼¤£¥²nªºÀW¬q¥i¥HÂo±¼¤@¨Ç¤£¥²nªºÂø°T¡A³oºâ«Üokªº§@ªk ¤§©Ò¥H·|»¡DAC¦b20K¥ª¥k´Ncut off¬O«Ü¥¿±`³oÂI¡A¥i¥H°Ñ¦Ò°ª¶Ç¯uÂø»x§@ªº´ú¸Õ http://blog.yam.com/hifihivi/article/37800179 ¥Ñ©ó¬O¥ÎAP§@ªº´ú¸Õ¡A©Ò¥H¤£¥Î¦Ò¼{´ú¸Õªººë·Ç«×¡A«e±´X¥xªº³£¥i¥H¶W¹L20KHz¡A¦ý¬O¬Ý¨ìQB-9¡A±q15K¶}©l´N¶}©l¬å¡AÁÙ¤£¨ì20K´N¬åªº®t¤£¦h¤F 2. §Ú¤@ª½³£µ®Ä¥d©Î¬O³â¥z¬°¤°»òÀWÅT°÷¥ª½¡A¦Ó¬O¦b»¡´ú¶qªº¤èªk¡A¤£¹L´ú³â¥zªº¬Ü¨¤¤S¸ò´ú°T·½ªº¬Ü¨¤¤£¤@¼Ë¤F@@ ¥u¬Otune¦¨³o»òº}«G¡A´N¤£¨£ªº¨CÓ¤H³£³ßÅw¤F¡A©Ò¥Hµû»ù¨â·¥¬O«Ü¥¿±`ªº 3. §xÂZ¬O¤£·|°Õ¡A¥u¬OªÅ¶¢ªº®É¶¡¦³¡A§Ú·|¦A·Q·QÁÙ¦³¨S¦³¤°»ò¥i¯à©Ê¡A¥i¯àªº¸Ü·|¦A¸òªB¤ÍɬݬÝAIO¨Ó§@¹êÅç¦n¤F ![]()
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Elite Member
![]() ![]() ![]() ![]() ![]() ¥[¤J¤é´Á: Jul 2001
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¦³Ãö§A´£ªºQB-9¡A¸Óºô¶¨Ã¨S¦³´£¨ì´ú¸Õ¬O¥H44.1¡BÁÙ¬O96¨Ó¶i¦æ¡C¦ý¬O¦³©ú½Tªº´£¨ìQB-9ªºFrequency Response¬°¡GDC - 20 kHz (44.1 kHz sample rate)¡BDC - 22 kHz (48 kHz sample rate)¡BDC - 40 kHz (88.2 kHz sample rate)¡BDC - 44 kHz (96 kHz sample rate)¡CAyreªººô¯¸¦³¤@¼Ò¤@¼Ëªº¼Æ¾Ú¡C¦pªG³o´ú¸Õ¬O44.1/48¨Ó´ú¡A°ªÀW°±¦b20KHz¬OÀ³¸Óªº¡A¦pªG³o¬O¥H96¡B¬ÆP192¨Ó¶i¦æ´ú¸Õ¡A«o±o¨ì¨º¼Ëªºµ²ªG¡A¨º¤£¬Oºô¯¸ªº´ú¸Õ¤èªk¦³°ÝÃD¡B´N¬O¼t°Ó¤½§Gªº³W®æ¦³»~? °ê¤ºªºµÅTÂø»x¤]´Nºâ¤F¡AAyreY¤½§G¦³»~¡A¨º¥i´N...... §Úı±o§A¤j¥i¥Î¹q¸£¤º«Øªºµ®Ä¨ÓA/B test¡AÀ³¸Ó«Ü®e©ö§ä¥X°ÝÃD¡C |
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