±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 575  |  »Ø¸´: 7
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

jiasheng7108

[½»Á÷] ¡¾ÇóÖú¡¿Çë½ÌÓйØÐÅÔë±È·½ÃæµÄÎÊÌâ

ÎÒÏëÇóÐÅÔë±È£¬ÖÜÆÚÐźÅÖеþ¼ÓÔëÉùµÄÐÅÔë±È¡£Æä¹«Ê½ÎªSNR=10lg(ÖÜÆÚÐźŹ¦ÂÊ/ÔëÉù·½²î)£¨dB£©£¬ÎÒÏëÎÊÏ£¬ÖÜÆÚÐźŵŦÂÊÔõôÇ󣿱ÈÈçÈçºÎÇó½âÕýÏÒÐÅºÅµÄÆ½¾ù¹¦ÂÊ£¬·½²¨ÐźÅÖ®ÀàµÄ£¬ÇóÄÄλ¸ßÊִͽÌһϣ¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sanko211

ÈÙÓþ°æÖ÷ (Ö°Òµ×÷¼Ò)

Сľ³æ¿ÛÀºÍõ

ºÜרҵµÄ¶«Î÷£¬ÎÒ¿´²»Ì«¶®
2Â¥2009-08-09 15:32:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

amazon821

¡ï
kuhailangyu(½ð±Ò+1,VIP+0):лл²ÎÓë 8-9 21:25
¸öÈËÈÏΪÇó³öÖÜÆÚÐźÅÒ»¸öÖÜÆÚÄڵŦÂʼ´¿É¡£
3Â¥2009-08-09 20:52:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qq27303272

Òø³æ (СÓÐÃûÆø)

¡ï ¡ï
kuhailangyu(½ð±Ò+1,VIP+0):»¶Ó­²ÎÓë 8-19 09:49
jiasheng7108(½ð±Ò+1,VIP+0):лл 8-19 20:59
Ïȶ¥Ò»¸ö£¡¸øµã½±Àø°¡
¸ø¸ö·½°¸£ºÏȽøÐиµÀïÒ¶±ä»»£¬È»ºó¸ù¾ÝÅÁ˹Íß¶û¶¨ÀíÇó½â¿ÉµÃ
4Â¥2009-08-19 08:52:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

billduke

½ð³æ (ÖøÃûдÊÖ)

һƪÎÄÕ¿´¿´ÀïÃæÓÐûÓÐ

¡ï ¡ï
kuhailangyu(½ð±Ò+2,VIP+0):лл²ÎÓë 8-27 15:57
ÖÜÆÚÐÅºÅÆ½¾ù¹¦ÂʲÉÑù¼ÆËãÎÊÌâµÄÑо¿ÆÀÂÛÍÆ¼ö               
                     
ÔÚÏßÔĶÁ ÏÂÔØÈ«ÎÄÊղر¾ÎÄ
Ф´ó¹â ÎâÖÇÃô ÀîÃô

¡¶¼ÆËã¼¼ÊõÓë×Ô¶¯»¯¡·
2003ÄêµÚz1ÆÚ
ÂÛÎÄ·¢±íËÙ·¢¿ì·¢£¨µã»÷½øÈ룩

ºËÐÄÆÚ¿¯ÂÛÎÄ¿ìËÙ·¢±í£¨µã»÷½øÈ룩
Õª¡¡¡¡Òª:±¾ÎÄÑо¿ÈçºÎÈ·¶¨²ÉÑùÖÜÆÚºÍ²ÉÑùµãÊýÀ´×¼È·¼ÆËãÖÜÆÚÐÅºÅµÄÆ½¾ù¹¦Âʼ°ÓÐЧֵ.Õë¶ÔÕýÏÒ²¨¡¢º¬ÓÐ2ÖÁP´Îг²¨µÄÖÜÆÚÐźŵȲ»Í¬Çé¿ö,¸ø³ö²¢Ö¤Ã÷Á˼¸¸öÏà¹ØµÄ½áÂÛ. (¹²3Ò³)
   
¹Ø ¼ü ´Ê:ÖÜÆÚÐźŠƽ¾ù¹¦ÂÊ ÓÐЧֵ ²ÉÑù
ѧ¿Æ·ÖÀà:TM93[¹¤Òµ¼¼Êõ > µç¹¤¼¼Êõ > µçÆø²âÁ¿¼¼Êõ¼°ÒÇÆ÷]
Ïà¹ØÎÄÕÂ:Ö÷ÌâÏà¹Ø
ÌÆºººè»ù£¬£Ì£Ì±Ìº£À¶Ì죡
5Â¥2009-08-27 08:27:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

billduke

½ð³æ (ÖøÃûдÊÖ)

ÓпÉÄÜÊÇÀûÓù¦ÂÊÆ×ÃܶȷÖÎö£¡

¡ï ¡ï
jiasheng7108(½ð±Ò+1,VIP+0): 8-27 08:39
sunxiao(½ð±Ò+1,VIP+0):лл²ÎÓ룬»¶Ó­³£À´ 8-28 00:56
ÓпÉÄÜÊÇÀûÓù¦ÂÊÆ×ÃܶȷÖÎö£¡È»ºó¿ÉÒÔÇóȡƽ¾ùÖµ¡£FFt±ä»¯¿ÉÒÔ£¬originÀïÃæ¾ÍÓУ¬MATLABÀïÃæÌ«¸´ÔÓÁË
ÌÆºººè»ù£¬£Ì£Ì±Ìº£À¶Ì죡
6Â¥2009-08-27 08:30:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

04110241

ľ³æ (СÓÐÃûÆø)

¡ï ¡ï
jiasheng7108(½ð±Ò+1,VIP+0): 9-14 10:08
kuhailangyu(½ð±Ò+1,VIP+0):»¶Ó­»ý¼«²ÎÓë 9-17 08:08
ÖÜÆÚÐÅºÅµÄÆµÆ×ÊÇÀëÉ¢µÄ£¬ÓÃÆµÆ×¸ÅÄî¾ÍºÜºÃÁË£¬¹¦ÂÊÆ×ÃܶÈÊÊÓÃÓÚÄÜÁ¿Á¬Ðø·Ö²¼µÄËæ»úÐźš£
µ«ÔÚ×öÖÜÆÚÐźŵÄFFTʱ£¬Ó¦È¡ÆäÕûÊý±¶ÖÜÆÚ³¤¶ÈÊý¾Ý¡£
7Â¥2009-09-14 10:04:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zjliu1265

ÖÁ×ðľ³æ (ÕýʽдÊÖ)

¡ï ¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
kuhailangyu(½ð±Ò+2,VIP+0):»¶Ó­»ý¼«²ÎÓë 9-17 08:08
ÔÚÍøÖ·¿ÉÒÔÏÂÔØµ½Ò»¸öѹËõÎļþ£¬ÀïÃæÒ²ÓиöSNR.mÎļþ£¬Äã¿É²Î¿¼
http://www.mathworks.com/matlabc ... s&download=true
ÕâÀïÎÒcopyÕâ¸öÎļþÄÚÈÝÁË£º

function r = SNR(in, est)
% To find SNR between input (in) and estimate (est) in decibels (dB).
%
% Reference: Vetterli & Kovacevic, "Wavelets and Subband Coding", p. 372

error = in - est;

r = 10 * log10(var(in(, 1) / mean(error(.^2));
8Â¥2009-09-16 20:47:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ jiasheng7108 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 301Çóµ÷¼Á +14 A_JiXing 2026-04-01 14/700 2026-04-03 18:31 by lsÁõ˧
[¿¼ÑÐ] 372·Ö²ÄÁÏÓ뻯¹¤£¨085600£©Ò»Ö¾Ô¸ºþÄÏ´óѧÇóµ÷¼Á +3 À¶¼ãƬ 2026-04-03 4/200 2026-04-03 17:58 by Jimmyandyou
[¿¼ÑÐ] 280Çóµ÷¼Á +17 ¹¾ààÏþÏþ 2026-04-02 18/900 2026-04-03 15:03 by hypershenger
[¿¼ÑÐ] »úеר˶297 +3 Afksy 2026-04-03 3/150 2026-04-03 14:24 by 1753564080
[¿¼ÑÐ] ¹¤¿Æ 267Çóµ÷¼Á +5 wanwan00 2026-04-02 7/350 2026-04-03 14:14 by zhangdingwa
[¿¼ÑÐ] 0705Àíѧ294Çóµ÷¼Á +3 ³É¹û³É¹ûcg5 2026-04-03 3/150 2026-04-03 14:04 by simons1972
[¿¼ÑÐ] 320Çóµ÷¼Á +3 ũҵ¹¤³ÌÓëÐÅÏ¢¼ 2026-04-03 3/150 2026-04-03 11:40 by ÍÁľ˶ʿÕÐÉú
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +8 ÀÁÑòÑòÇáÖÃÓñÍÎ 2026-04-02 8/400 2026-04-02 22:03 by liu823948201
[¿¼ÑÐ] 372·Ö²ÄÁÏÓ뻯¹¤£¨085600£©Ò»Ö¾Ô¸ºþÄÏ´óѧÇóµ÷¼Á +5 À¶¼ãƬ 2026-04-02 6/300 2026-04-02 21:37 by dongzh2009
[¿¼ÑÐ] 085601Ò»Ö¾Ô¸±±Àí325·ÖÇóµ÷¼Á +4 ÕÒµ÷¼Á£¬£¬ 2026-04-02 4/200 2026-04-02 21:29 by dongzh2009
[¿¼ÑÐ] 346Çóµ÷¼Á +5 Ö£³ÏÀÖ 2026-04-02 5/250 2026-04-02 16:38 by SZW_UJN
[¿¼ÑÐ] 318Çóµ÷¼Á£¬¼ÆËã²ÄÁÏ·½Ïò +10 Îüß÷Óк¦óÏÃü 2026-04-01 11/550 2026-04-02 16:29 by oooqiao
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ²ÄÁÏѧ˶328·ÖÇóµ÷¼Á +6 1¶Îʱ¼ä 2026-03-31 7/350 2026-04-02 13:57 by 3041
[¿¼ÑÐ] 270µ÷¼Á +7 maxjxbsk 2026-04-02 7/350 2026-04-02 09:50 by yulian1987
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤£¨0856£©304ÇóBÇøµ÷¼Á +8 Çñgl 2026-03-30 16/800 2026-04-01 17:58 by Çñgl
[¿¼ÑÐ] 285Çóµ÷¼Á +7 AZMK 2026-03-30 13/650 2026-04-01 17:00 by Æß¶È²»ÐÅÈÎ
[¿¼ÑÐ] ¿¼Ñе÷¼Á +9 СÀ¯ÐÂ±Ê 2026-03-29 10/500 2026-03-31 19:52 by Dyhoer
[¿¼ÑÐ] Ò»Ö¾Ô¸»ª¶«Ê¦·¶´óѧÓлú»¯Ñ§×¨Òµ£¬³õÊÔ351·Ö£¬¸´ÊÔ±»Ë¢Çóµ÷¼Á! +9 ÕæÃûÓбù 2026-03-29 10/500 2026-03-31 18:01 by xhai2011
[¿¼ÑÐ] ÇóÊÕÁô +8 1943443204 2026-03-28 8/400 2026-03-31 15:00 by -ÃÔÁË·°¡Â·
[¿¼ÑÐ] 11408Èí¼þ¹¤³ÌÇóµ÷¼Á +3 Qiuѧing 2026-03-28 3/150 2026-03-28 21:50 by zhq0425
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û