无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2011年
10期
24-26
,共3页
语音活动检测(VAD)%语音预处理%语音检测算法%多特征检测
語音活動檢測(VAD)%語音預處理%語音檢測算法%多特徵檢測
어음활동검측(VAD)%어음예처리%어음검측산법%다특정검측
voice activity detection%voice preprocessing%voice detection algorithm%multi-feature detection
针对高强度噪声背景下活动话音无法准确检测的问题,提出了基于多特征的语音活动检测算法,详细论述了该算法中语音信号的采样量化、预加重、分帧和加窗等预处理技术,分析了检测算法设计中的动态门限更新、短暂停顿平滑等关键因素,并总结出了多特征语音活动检测算法的流程图。通过基于硬件平台的算法测试和仿真分析,结果验证了该算法的合理性和有效性,对于复杂背景噪声环境下的活动话音检测有着重要的实用意义。
針對高彊度譟聲揹景下活動話音無法準確檢測的問題,提齣瞭基于多特徵的語音活動檢測算法,詳細論述瞭該算法中語音信號的採樣量化、預加重、分幀和加窗等預處理技術,分析瞭檢測算法設計中的動態門限更新、短暫停頓平滑等關鍵因素,併總結齣瞭多特徵語音活動檢測算法的流程圖。通過基于硬件平檯的算法測試和倣真分析,結果驗證瞭該算法的閤理性和有效性,對于複雜揹景譟聲環境下的活動話音檢測有著重要的實用意義。
침대고강도조성배경하활동화음무법준학검측적문제,제출료기우다특정적어음활동검측산법,상세논술료해산법중어음신호적채양양화、예가중、분정화가창등예처리기술,분석료검측산법설계중적동태문한경신、단잠정돈평활등관건인소,병총결출료다특정어음활동검측산법적류정도。통과기우경건평태적산법측시화방진분석,결과험증료해산법적합이성화유효성,대우복잡배경조성배경하적활동화음검측유착중요적실용의의。
Under the high-intensity background noise,the voice activity can＇t be detected accurately,Aiming at this problem,a voice activity detection algorithm based on multi-features is proposed.In this paper,the technologies such as speech signal sample quantization,pre-emphasis,frame windows and other pre-processing are discussed in detail,the key factors such as dynamic threshold updating,pause smooth in algorithm design are analyzed,and the program flow chart is concluded.The result of test and simulation analysis on hardware platform proves the rationality and effectiveness of algorithm,which has important practical significance for voice activity detection under complex background noise environment.
