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銆�銆�灏嶄簬鍑芥暩(sh霉)cor_h_X锛� 锛�锛屽埄鐢ㄤ笂杩版�濇兂绶ㄥ绶氭�у尟绶紝鍙渶瑕佸畾缇�57鍊嬪瘎瀛樺櫒灏卞彲浠ュ畬鎴愭墍鐢ㄧ殑鎿嶄綔锛屽瓨鍙栨寚浠ゅ緸1760姊濆劒(y艒u)鍖栧埌30姊�锛屽儏鐐哄師渚嗙殑1/60銆傚悓鏅傚煼(zh铆)琛岄�熷害寰�390072鍊嬫檪閻樻笡灏戝埌35871鍊嬶紝闄嶇偤鍘熶締鐨�1/10銆�
銆�銆�绻埗鐨勫垎鏋愬湒鍙互鍖呭惈鐩搁棞鍦栵紝鐩搁棞琛ㄧ瓑锛屼娇璩囨簮瀹夋帓鏇村姞鍚堢悊銆傝┎鏂规硶鍦ㄥ叾浠栧嚱鏁�(sh霉)鐨勬敼瀵腑涔熷娆′娇鐢ㄥ埌銆�
銆�銆�5.2 鍔熻兘鐩镐技鐨勫嚱鏁�(sh霉)鎴栦唬纰兼鍚堝苟鐐轰竴鍊嬪嚱鏁�(sh霉)
銆�銆�绶氭�у尟绶ㄥ湪鎻愰珮浠ｇ⒓鏁堢巼鐨勫悓鏅備篃鎴愬�嶇殑澧炲姞浜嗕唬纰煎昂瀵�锛屼互涓婅堪cor_h_X锛� 锛夌偤渚�锛屽畠鍦ㄨ┎瀵悗浠ｇ⒓灏哄寰�660姊濆澶у埌7776姊濓紙瑭叉暩(sh霉)鎿�(j霉)鐢盋CS鍓栨瀽宸ュ叿鍒嗘瀽鎵�寰楋級銆傚湪宸ョ▼鎳夌敤涓�锛屽皪浜庢湁闄愮殑鍏�(n猫i)瀛樼▼搴忓崁(q奴)锛屾垜鍊戞渻閬╃暥娓涘皯绋嬪簭鍗犵敤鐨勭┖闁�銆傚悎骞跺姛鑳界浉浼肩殑鍑芥暩(sh霉)鍙互閬斿埌閫欎竴瑕佹眰銆�
銆�銆�鍦↙SP閲忓寲铏曠悊涓紝婧愪唬纰间腑绲﹀嚭浜�2鍊婰SP閬告搰鍑芥暩(sh霉)锛歀sp_select_1锛� 锛夊拰Lsp_select_2锛� 锛�锛岃�屾垜鍊戠櫦(f膩)鐝�(xi脿n)瀹冨�戝叿鏈夌浉鍚岀殑鍔熻兘鍜岀浉浼肩殑绲�(ji茅)妲�(g貌u)锛屽洜姝わ紝鍦ㄥ皪鍏╄�呯殑绶氭�у尟绶ㄦ敼瀵腑锛屾垜鍊戝彧闇�绶ㄥ涓�鍊嬪嚱鏁�(sh霉)锛堝懡鍚嶇偤Lsp_select锛夊嵆鍙鐝�(xi脿n)LSP閲忓寲铏曠悊涓�欏叐鍊嬫ā濉婄殑鍔熻兘銆�
銆�銆�鍙﹀锛屽湪灏嶄簬涓�浜涙暩(sh霉)绲勬嫹璨�锛屾暩(sh霉)绲勫垵濮嬪寲鐨勪唬纰硷紝鎴戝�戝悓妯ｅ彲浠ョ敤姝ゆ柟娉�锛岀法瀵竴鍊嬪嚱鏁�(sh霉)瀵︾従(xi脿n)锛岄�欐ǎ鍙互鍦ㄦ彁楂樺煼(zh铆)琛屾晥鐜囩殑鍚屾檪锛屾笡灏戠▼搴忓崰鐢ㄧ殑鍏�(n猫i)瀛樼┖闁�銆�
銆�銆�5.3 澶氬�嬪惊鐠�(hu谩n)鍚堝苟鐐轰竴鍊嬪惊鐠�(hu谩n)
銆�銆�C浠ｇ⒓鏀瑰绶氭�у尟绶ㄧ殑鏅傚��锛屾垜鍊戝父甯告渻鐧�(f膩)鐝�(xi脿n)锛屽彧瑕佷綔涓�浜涜(di脿o)鏁�锛屽叐鍊嬫垨澶氬�嬪惊鐠�(hu谩n)瀹屾垚鐨勬搷浣滃畬鍏ㄥ彲浠ョ敱涓�鍊嬪惊鐠�(hu谩n)渚嗗畬鎴�銆備互LPC瀛愭ā濉�240榛炲姞绐楄獮闊崇殑鑷浉闂滆▓绠桝utocorr锛堬級鍑芥暩(sh霉)鐐轰緥锛岀稉(j墨ng)閬庡劒(y艒u)鍖栨敼瀵殑C浠ｇ⒓锛堥儴鍒嗭級濡備笅锛�
銆�銆�for锛坕=0; i<L_WINDOW; i++锛� //鍊嬪惊鐠�(hu谩n)楂�
銆�銆�y[i] = 锛坃smpy锛坸[i], hamwindow[i]锛�+0x00008000L锛�>>16;
銆�銆�sum = 1; //閬垮厤鐐�0鐨勬儏娉�
銆�銆�for锛坕=0; i<L_WINDOW; i++锛� //绗簩鍊嬪惊鐠�(hu谩n)楂�
銆�銆�sum = _sadd锛坰um,_smpy锛坹[i], y[i]锛夛級;
銆�銆�閫欐浠ｇ⒓鍖呭惈浜嗗叐鍊媐or寰挵(hu谩n)锛屽湪CCS涓洿鎺ョ法璀亱琛屽苟琛屽害寰堝樊锛屽埄鐢ㄧ窔鎬у尟绶ㄩ噸瀵唬纰�銆傛垜鍊戠櫦(f膩)鐝�(xi脿n)鍏╁�嬪惊鐠�(hu谩n)楂旂殑寰挵(hu谩n)娆℃暩(sh霉)鍧囩偤60锛圠_WINDOW=60锛夛紝鎵�铏曠悊鐨勬暩(sh霉)绲勪笉鍚岋紝骞朵笖鍏╁�嬪惊鐠�(hu谩n)娌掓湁鐩搁棞鎬�锛屽彲浠ユ妸鍜岀浜屽�嬪惊鐠�(hu谩n)鍚堝苟鎴愪竴鍊嬪惊鐠�(hu谩n)銆傚墠鑰呯殑鍔熻兘鏄皪瑾為煶淇¤櫉閫茶鍔犵獥锛涘悗鑰呮槸瀵︾従(xi脿n)涔樼疮鍔狅紙Mac锛�銆傚叐鑰呭悎骞跺悗閲囩敤绶氭�у尟绶ㄧ法瀵�锛屽叾浠ｇ⒓濡備笅锛�
銆�銆�mvk 60,i //瑷疆寰挵(hu谩n)娆℃暩(sh霉)
銆�銆�loop1: lddw *ham++,hamih:hamil //hamwindow[]鎸囬嚌
銆�銆�lddw *x++,xih:xil //x[]鎸囬嚌
銆�銆�smpy2 hamil,xil,yi1:yi0 //鍏╁皪16浣嶆搷浣滄暩(sh霉)鐩告壙锛屽苟琛屽煼(zh铆)琛�
銆�銆�smpy2 hamih,xih,yi3:yi2
銆�銆�sadd yi0,con0x8000,yi0
銆�銆�sadd yi1,con0x8000,yi1
銆�銆�sadd yi2,con0x8000,yi2
銆�銆�sadd yi3,con0x8000,yi3
銆�銆�packh2 yi1,yi0,yl //鏁�(sh霉)鎿�(j霉)鎵撳寘鎶�琛�
銆�銆�packh2 yi3,yi2,yh
銆�銆�stdw yh:yl,*y++ //闆欏瓧瀛樺彇锛屾彁楂樺煼(zh铆)琛屾晥鐜�
銆�銆�smpy2 yl,yl,yi1:yi0
銆�銆�sadd sum0,yi1,sum0
銆�銆�sadd sum0,yi0,sum0
銆�銆�smpy2 yh,yh,yi3:yi2
銆�銆�sadd sum0,yi3,sum0
銆�銆�sadd sum0,yi2,sum0
銆�銆�add i,-1,i
銆�銆�[i] b loop1 //鎶婂拰绗簩鍊嬪惊鐠�(hu谩n)鍚堟垚涓�鍊嬪ぇ寰挵(hu谩n)锛屾笡灏戣綁(zhu菐n)绉绘鏁�(sh霉)
銆�銆�鐢�(ch菐n)鐢熺殑鍖法浠ｇ⒓骞惰娴佹按鎬ц兘澶уぇ澧炲姞锛岃�楄不鐨勬檪閻樺懆鏈熸暩(sh霉)寰�1310000娓涘皯鍒�15000锛屽皯浜庢敼绶ㄥ墠鐨�1/8銆�
銆�銆�6. 绲�(ji茅)鏉熻獮
銆�銆�闂滀簬绶ㄨВ纰煎櫒鍩�(zh铆)琛岀殑鏅傞悩鍛ㄦ湡锛屽湪绶氭�у尟绶ㄦ敼瀵墠鍚�锛屾枃浠剁増鏈�氶亷CCS鐨刾rofiler鍓栨瀽宸ュ叿寰楃煡锛氭瘡10骞�锛�100ms锛夊緸159700000闄嶈嚦68500000锛屽儏鐐哄師渚嗙殑42%銆傜‖浠剁増鏈�茶娓│寰楋細绶ㄨВ纰肩殑骞�鏁�(sh霉)鎻愰珮鍒颁簡88骞�/s浠ヤ笂锛岄憭浜庣法纰�銆佽В纰肩殑鏅傞枔姣斾緥鐐�5:1锛屾墍浠�锛屾湰绯荤当(t菕ng)绶ㄧ⒓宸茬稉(j墨ng)閬斿埌100骞�/s锛屽畬鍏ㄧ鍚堝鏅傞�氫俊鐨勮姹傘��
缍韩闆诲瓙閫�锛岄浕瀛愮煡璀橈紝涓�鏌ョ櫨閫�锛�
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