00001 #include <math.h> 00002 #include "c_lpc10.h" 00003 00004 /**********************************************************/ 00005 00006 FLOAT energy_sqrt( INDEX len, FLOAT speech[] ) 00007 { 00008 INDEX i; 00009 FLOAT rms = (FLOAT)0.0; 00010 00011 for (i = 0; i < len; i++) 00012 rms += speech[i] * speech[i]; 00013 00014 return (FLOAT)sqrt(rms / len); 00015 } 00016 00017 /**********************************************************/