How can I loop a sound without using a “clip” in java before writing it to a file

Question

First of all, thanks to everyone for helping me with my previous questions.

In the following code, I take two frequencies as an alternative and write them to the .wav format to run in my Windows Media Player for a certain amount of time specified by the user. I want to understand how to loop these frequencies for an alternative start during the specified time, for example, an ambulance siren, and in my program both frequencies are played once, alternatively. For example, if I define the time as 10 seconds, then both frequencies work for 5 seconds each stretching. But I want the 1st frequency to work for a second or two seconds (as the user indicates), and then the 2nd frequency for that same second, and then the 1st frequency again, and it should continue until the specified time.

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.LineUnavailableException;

public class AudioWrite2New {

    public static void main(String[] args) throws IOException, InterruptedException, LineUnavailableException {

        Scanner in = new Scanner(System.in);
        final double SAMPLING_RATE = 44100;             // Audio sampling rate
        int time = in.nextInt();                        //Time specified by user in seconds
//        int time2 = in.nextByte();
        int frequency1 = in.nextInt();                   //Frequency1 specified by the user in hz
        int frequency2 = in.nextInt();                   //Frequency2 specified by the user in hz

        float buffer[] = new float[(int) (time/2 * SAMPLING_RATE)];   //Size of buffer[], which in case of 10 seconds is 441000
        float buffer1[] = new float[(int) (time/2 * SAMPLING_RATE)];   //Size of buffer1[], which in case of 10 seconds is 441000

        for (int sample = 0; sample < buffer.length; sample++) {
            double cycle = sample / SAMPLING_RATE;                  //Fraction of cycle between samples
            buffer[sample] = (float) (Math.sin(2 * Math.PI * frequency1 * cycle));
            //buffer1[sample] = (float) (Math.sin(2 * Math.PI * frequency2 * cycle));
        }
        for (int sample = 0; sample < buffer1.length; sample++) {
            double cycle = sample / SAMPLING_RATE;                  //Fraction of cycle between samples
            //buffer[sample] = (float) (Math.sin(2 * Math.PI * frequency1 * cycle));
            buffer1[sample] = (float) (Math.sin(2 * Math.PI * frequency2 * cycle));
        }
        //System.out.println(buffer[1]);
        byte byteBuffer[] = new byte[buffer.length * 2];            //Size of byteBuffer, in this case 882000
        byte byteBuffer1[] = new byte[buffer1.length * 2];            //Size of byteBuffer, in this case 882000

        int count = 0;
        for (int i = 0; i < byteBuffer.length; i++) {
            final int x = (int) (buffer[count++] * Short.MAX_VALUE);
            byteBuffer[i++] = (byte) x;
            byteBuffer[i] = (byte) (x / 256);
        }

        count = 0;
        for (int i = 0; i < byteBuffer1.length; i++) {
            final int x = (int) (buffer1[count++] * Short.MAX_VALUE);
            byteBuffer1[i++] = (byte) x;
            byteBuffer1[i] = (byte) (x / 256);
        }

        //For merging the two frequencies
        byte[] merge = new byte[byteBuffer.length + byteBuffer1.length];
        System.arraycopy(byteBuffer, 0, merge, 0, byteBuffer.length);
        System.arraycopy(byteBuffer1, 0, merge, byteBuffer.length, byteBuffer1.length);

        File out = new File("E:/RecordAudio17.wav"); //The path where user want the file data to be written

        //Construct an audio format, using 44100hz sampling rate, 16 bit samples, mono, and big 
        // endian byte ordering
        AudioFormat format = new AudioFormat((float) SAMPLING_RATE, 16, 1, true, false);

        // It uses bytebuffer as its buffer array that contains bytes that may be read from the stream.
        ByteArrayInputStream bais = new ByteArrayInputStream(merge);

        //Constructs an audio input stream that has the requested format and length in sample frames, using audio data 
        //from the specified input stream.
        AudioInputStream audioInputStream = new AudioInputStream(bais, format, buffer1.length + buffer.length);

        //Writes a stream of bytes representing an audio file of the specified file type to the external file provided.
        AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, out);

        audioInputStream.close();       //Closes this audio input stream
    }
}

Java JavaSounds, . , , , . .

Answer 1

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import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.LineUnavailableException;

public class AudioWrite2New {

    public static void main(String[] args) throws IOException, InterruptedException, LineUnavailableException {

        Scanner in = new Scanner(System.in);
        final double SAMPLING_RATE = 44100;             // Audio sampling rate
        int time = in.nextInt();                        //Time specified by user in milliseconds
        int time2 = in.nextByte();
        int frequency1 = in.nextInt();                   //Frequency1 specified by the user in hz
        int frequency2 = in.nextInt();                   //Frequency2 specified by the user in hz

        float buffer[] = new float[((int) (time * SAMPLING_RATE))/1000];   //Size of buffer[], which in case of 10 seconds is 441000
        float buffer1[] = new float[((int) (time * SAMPLING_RATE))/1000];   //Size of buffer1[], which in case of 10 seconds is 441000

        //for (int a = 1; a <= time2 / 2; a++) {
        for (int sample = 0; sample < buffer.length; sample++) {
            double cycle = sample / SAMPLING_RATE;                  //Fraction of cycle between samples
            buffer[sample] = (float) (Math.sin(2 * Math.PI * frequency1 * cycle));
            //buffer1[sample] = (float) (Math.sin(2 * Math.PI * frequency2 * cycle));
        }
        for (int sample = 0; sample < buffer1.length; sample++) {
            double cycle = sample / SAMPLING_RATE;                  //Fraction of cycle between samples
            //buffer[sample] = (float) (Math.sin(2 * Math.PI * frequency1 * cycle));
            buffer1[sample] = (float) (Math.sin(2 * Math.PI * frequency2 * cycle));
        }
        //System.out.println(buffer[1]);
        byte byteBuffer[] = new byte[buffer.length * 2];            //Size of byteBuffer, in this case 882000
        byte byteBuffer1[] = new byte[buffer1.length * 2];            //Size of byteBuffer, in this case 882000

        int count = 0;
        for (int i = 0; i < byteBuffer.length; i++) {
            final int x = (int) (buffer[count++] * Short.MAX_VALUE);
            byteBuffer[i++] = (byte) x;
            byteBuffer[i] = (byte) (x / 256);
        }

        count = 0;
        for (int i = 0; i < byteBuffer1.length; i++) {
            final int x = (int) (buffer1[count++] * Short.MAX_VALUE);
            byteBuffer1[i++] = (byte) x;
            byteBuffer1[i] = (byte) (x / 256);
        }

        int iterations = (1000*time2)/(2*time);
        byte[] merge = new byte[iterations*(byteBuffer.length + byteBuffer1.length)];
        for (int i = 0; i<iterations; i++)
        {
            //arraycopy(Object src, int srcPos, Object dest, int destPos, int length)
            //For merging the two frequencies
            System.arraycopy(byteBuffer, 0, merge, 0+i*(byteBuffer.length + byteBuffer1.length), byteBuffer.length);
            System.arraycopy(byteBuffer1, 0, merge, byteBuffer.length+i*(byteBuffer.length + byteBuffer1.length), byteBuffer1.length);
        }

        File out = new File("E:/RecordAudio17.wav"); //The path where user want the file data to be written

        //Construct an audio format, using 44100hz sampling rate, 16 bit samples, mono, and big 
        // endian byte ordering
        AudioFormat format = new AudioFormat((float) SAMPLING_RATE, 16, 1, true, false);

        // It uses bytebuffer as its buffer array that contains bytes that may be read from the stream.
        ByteArrayInputStream bais = new ByteArrayInputStream(merge);

        //Constructs an audio input stream that has the requested format and length in sample frames, using audio data 
        //from the specified input stream.
        AudioInputStream audioInputStream = new AudioInputStream(bais, format, (buffer1.length + buffer.length) * (time2/4));

        //Writes a stream of bytes representing an audio file of the specified file type to the external file provided.
        AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, out);

        //}
        //audioInputStream.close();       //Closes this audio input stream
    }
}