Method to calculate and return the average power of the signal (average amplitude) - Java java.lang

Java examples for java.lang:double

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Description

Method to calculate and return the average power of the signal (average amplitude)

Demo Code

/* 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;
    }
}

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