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And it searches much further for the unvoiced frame according to the ZCR(zero crossing rate),which is differ from unvoiced frame to background frame. 根據(jù)背景音和靜音過零率的不同,進一步搜索符合要求的靜音幀;
ZCR series valve features extremely good technical performance, low load loss andhighreliability,is suitablefor coalgas,natural gas,liquefied petroleum gas etc. ZCR系列燃氣緊急切斷閥具有極佳的技術性能，低負荷損失和高可靠性。