is audio Silence - Android Media

Android examples for Media:Auto Player

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Description

is audio Silence

Demo Code

/*//from  w  ww.  j av a2s. co  m
 * Copyright 2012 Greg Milette and Adam Stroud
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;

public class Main {
    public static boolean isSilence(short[] data) {
        boolean silence = false;
        int RMS_SILENCE_THRESHOLD = 2000;
        if (rootMeanSquared(data) < RMS_SILENCE_THRESHOLD) {
            silence = true;
        }
        return silence;
    }

    public static double rootMeanSquared(short[] nums) {
        double ms = 0;
        for (int i = 0; i < nums.length; i++) {
            ms += nums[i] * nums[i];
        }
        ms /= nums.length;
        return Math.sqrt(ms);
    }
}

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