语音信号处理的工具箱function[lev,fso]=activlev(sp,fs,mode)%ACTIVLEVMeasureactivespeechlevelasinITU-TP.56[LEV,FSO]=(SP,FS,MODE)%%Inputs:SPisthespeechsignal(withbetterthan20dBSNR)%FSisthesamplefrequencyinHz(seealsoFSObelow)%MODEisanycombinationofthefollowing:%r-raw:donot