Java examples for java.lang:double
Method to calculate and return the average power of the signal (average amplitude)
/* The MIT License (MIT) * //from w ww . j a v a2s. c o m * Copyright (c) 2015 Tinotenda Chemvura * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ //package com.java2s; public class Main { /** * Method to calculate and return the average power of the signal (average * amplitude) * * @param frame * Array of sample points to be tested * @return average amplitude of the frame */ public static double signalPower(double[] frame) { double power = 0; for (int i = 0; i < frame.length; i++) { power += Math.abs(frame[i]); } return power / frame.length; } }