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Thread: Detecting sound from microphone using Java. Issue specific to Java Versions

  1. #1
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    Default Detecting sound from microphone using Java. Issue specific to Java Versions

    Hello there!

    I'm running this simple code that listens to my microphone and prints out bytes.

    Problem:
    It listens to the microphone for any changes correctly on
    java version "1.6.0_43"

    but it doesn't listen to the microphone for any changes correctly on
    java version "1.7.0_25"

    Both version compile and run fine.

    Example Output using Java 1.6
    5172 1
    5196 2
    5103 3
    2859 4
    2549 5
    2742 6
    3112 7
    5028 8
    4515 9
    3856 10
    5189 11
    5080 12
    5165 13
    4925 14

    When it drops down to around 2500 that's when there was sound going into the microphone.

    Example Output using Java 1.7
    5652 1
    5655 2
    5699 3
    6081 4
    6213 5
    5972 6
    5907 7
    5828 8
    5931 9
    6187 10
    6015 11
    5949 12
    6196 13

    It no longer detects any noise from the microphone.


    import java.io.*;
    import javax.sound.sampled.*;
     
    public class SpeechDetectionTest {
     
        public static void main(String[] args) {
     
            ByteArrayOutputStream byteArrayOutputStream;
            TargetDataLine targetDataLine;
            int cnt;
            boolean stopCapture = false;
            byte tempBuffer[] = new byte[8000];
            int countzero, countdownTimer;   
            short convert[] = new short[tempBuffer.length];
     
     
     
            try {
                byteArrayOutputStream = new ByteArrayOutputStream();
                stopCapture = false;
                countdownTimer = 0;
                while (!stopCapture) {
                    AudioFormat audioFormat = new AudioFormat(8000.0F, 16, 1, true, false);
                    DataLine.Info dataLineInfo = new DataLine.Info(TargetDataLine.class, audioFormat);
                    targetDataLine = (TargetDataLine) AudioSystem.getLine(dataLineInfo);
                    targetDataLine.open(audioFormat);
                    targetDataLine.start();
                    cnt = targetDataLine.read(tempBuffer, 0, tempBuffer.length);
                    byteArrayOutputStream.write(tempBuffer, 0, cnt);
                    try {
                        countzero = 0;
                        for (int i = 0; i < tempBuffer.length; i++) {                                    
                            convert[i] = tempBuffer[i];
                            if (convert[i] == 0) {
                                countzero++;
                            }
                        }
     
                        countdownTimer++;
                        System.out.println(countzero + " " + countdownTimer);
     
                    } catch (StringIndexOutOfBoundsException e) {
                        System.out.println(e.getMessage());
                    }
                    Thread.sleep(0);
                    targetDataLine.close();
                }
            } catch (Exception e) {
                System.out.println(e);
            }
        }
    }

    Any ideas?


  2. #2
    Administrator copeg's Avatar
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    Default Re: Detecting sound from microphone using Java. Issue specific to Java Versions


  3. #3
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    Default Re: Detecting sound from microphone using Java. Issue specific to Java Versions

    Quote Originally Posted by copeg View Post
    I also posted on these forums:

    Detecting Sound From Microphone Using Java. Issue With Java Versions - Java | Dream.In.Code

    Detecting sound from microphone using Java (I/O and Streams forum at JavaRanch)

    One guy mentioned it's a bug?

    I just want it to work on 1.7, sorry I mega cross posted.

  4. #4
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    Default Re: Detecting sound from microphone using Java. Issue specific to Java Versions

    Solved,

    The issue wasn't with Java versions, I'm not sure what went wrong but it works fine after I reinstalled my audio drivers.

    Thanks.

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