Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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.
 */

public class Main {
    public static byte[] createSoundDataInByteArray(int bufferSamples, final int sampleRate, final double frequency,
            double sweep) {
        final double rad = 2 * Math.PI * frequency / sampleRate;
        byte[] vai = new byte[bufferSamples];
        sweep = Math.PI * sweep / ((double) sampleRate * vai.length);
        for (int j = 0; j < vai.length; j++) {
            int unsigned = (int) (Math.sin(j * (rad + j * sweep)) * Byte.MAX_VALUE) + Byte.MAX_VALUE & 0xFF;
            vai[j] = (byte) unsigned;
        }
        return vai;
    }
}