璋冮煶鍙扮殑涓昏鎶鏈寚鏍

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鎵灞炲垎绫伙細闊冲搷鎶鏈

涓嶅悓鐨璋冮煶鍙锛屽叾浜у搧璇存槑涔︿腑鍙兘浼氱綏鍒楀椤规寚鏍囷紝鍏朵富瑕佹妧鏈寚鏍囦富瑕佹槸浠ヤ笅鍑犳柟闈㈢殑鍐呭銆

璋冮煶鍙扮殑涓昏鎶鏈寚鏍

鏁板瓧璋冮煶鍙

1.澧炵泭(Gain)
澧炵泭涓鑸槸鎸囪皟闊冲彴鐨勬渶澶у鐩婏紝鍗抽氶亾澧炵泭鎺у埗鍣ㄧ疆浜庣伒鏁忓害鏈楂樹綅缃傚叾鏁板煎簲涓80~90dB銆傝澧炵泭瓒充互婊¤冻鐏垫晱搴︽渶浣庣殑浼犲0鍣ㄥ鏀惧ぇ鍣ㄧ殑瑕佹眰鍙婅皟闊冲彴绾︽湁20dB鐢靛钩鍌ㄥ鍊肩殑瑕佹眰銆

2. 棰戠巼鍝嶅簲(Frequency Response)
杩欓」鎸囨爣鏄湪閫氶亾涓墍鏈夊潎琛″櫒鎴栭煶璋冩帶鍒跺櫒鍜屾护娉㈠櫒閮藉湪鈥滃钩绾库(鍗充换浣曢娈典笉鎻愬崌涔熶笉琛板噺锛屾护娉㈠櫒鏂紑涓嶇敤)浣嶇疆鏃惰繘琛屾祴閲忔墍寰楃殑鍊笺備竴鑸皟闊冲彴瑕佹眰甯﹀30Hz~顎15kHz锛岄鐜囦笉鍧囧寑搴﹀皬浜幝1dB锛涢珮妗h皟闊冲彴瑕佹眰甯﹀20Hz~20kHz锛岄鐜囦笉鍧囧寑搴﹀皬浜幝0.5dB銆

3.绛夋晥鍣0鍜屼俊鍣瘮(Equivalent Input Noise and S/N Ratio)
璋冮煶鍙拌緭鍏ラ氶亾涓鑸兘璁炬湁浼犲0鍣ㄨ緭鍏ュ拰绾胯矾杈撳叆銆備紶澹板櫒杈撳叆鐢ㄦ姌绠楀埌杈撳叆绔瓑鏁堝櫔澹扮數骞虫潵琛ㄧず锛涚嚎璺緭鍏ュ垯鐢0dB澧炵泭鏃剁殑淇″櫔姣旀潵琛ㄧず銆傝緭鍏ョ绛夋晥鍣0鐢靛钩绛変簬杈撳嚭绔櫔澹扮數骞充笌璋冮煶鍙板鐩婁箣宸
鐢变簬璋冮煶鍙板櫔澹颁富瑕佹潵鑷墠缃斁澶у櫒锛屽綋瀹冪殑澧炵泭涓瀹氭椂锛屽櫔澹版槸鎭掑畾鐨勩傝岃皟闊冲彴鐨勯煶閲忚“鍑忓櫒鏄彲璋冩暣鐨勶紝杩欐牱娴嬪緱鐨勪俊鍣瘮涔熷氨涓嶄竴鑷淬備絾鏄紝杈撳叆绔瓑鏁堝櫔澹扮數骞冲嵈鏄笉鍙樼殑锛岃繖涓鎸囨爣鑳芥瘮杈冨噯纭湴琛ㄦ槑鈥滆緭鍏モ濆墠缃斁澶у櫒閮ㄤ欢鐨勫櫔澹版ц兘锛屾晠琚噰鐢ㄣ
绾胯矾杈撳叆浠ヤ俊鍣瘮琛ㄧず鍏跺櫔澹版寚鏍囷紝瀹冩槸鍗曠嫭涓璺殑杈撳叆/杈撳嚭鍗曞厓鐨勮川閲忔寚鏍囷紝涓鑸ぇ浜80dB銆

4.闈炵嚎鎬уけ鐪(Distortion)
闈炵嚎鎬уけ鐪熸槸鎸囧湪鏁翠釜浼犺緭棰戝甫鍐呯殑鈥滄昏皭娉㈠け鐪熲濓紝涓鑸皟闊冲彴閮藉皬浜0.1%锛岃緝楂樻。鐨勮皟闊冲彴灏忎簬0.05%銆

5.鍒嗙搴(Impedance)鎴栦覆闊(Crosstalk)
鍒嗙搴︽垨涓查煶鎸囩浉閭婚氶亾涔嬮棿鐨勯殧闊冲害銆傞珮棰戦殧闊冲害寰寰姣斾綆棰戦殧绂诲害宸紝涓鑸姹60~70dB浠ヤ笂銆傛湁浜涗骇鍝佽繕鏍囨槑鎬荤嚎涔嬮棿鐨勫垎绂诲害锛屽畠搴旀瘮閫氶亾涔嬮棿鏇翠弗鏍硷紝涓鑸湪70~80dB浠ヤ笂銆

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鍙戣〃璇勮

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