Member Avatar for Vin vin

So I am making a responsive audio waveform, if you don't know what that is, it is something like this: (btw this is my goal to make those audio waveforms).
https://i.ytimg.com/vi/J7uN-SQtOYI/maxresdefault.jpg
https://www.youtube.com/watch?v=OVMuwa-HRCQ
https://www.youtube.com/watch?v=SCD2tB1qILc
I don't know how to describe it, so just look at the videos and image.

but my question is, how do I get the values from the "AudioSpectrumListener", it has a lambda expression.
And I need the value of the magnitude. So I can print out the values.
Later I will use the values to make rectangles and that rectangles will change height shape because of the changing value from the magnitude.

I looked at some examples and tutorials, here are some:
jnlps://download.oracle.com/otndocs/products/javafx/8/samples/Ensemble/Ensemble.jnlp
https://victor-fx.blogspot.com/2017/08/audio-visualization-in-javafx.html

as you can see, I used animation timer, because the "AudioSpectrumInterval" is on 60, that means it updates 60 times in a second.
I can use a for a loop too, but it will print out the same values about a couple of times, or even more than that.

Edited by JamesCherrill because: Its a question, not a snippet
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Member Avatar for Vin vin

I just need the magnitudes to be accesable from the whole class.
(btw, I am going to remove animationtimer

Edited by Vin vin because: remove animationtimer
Member Avatar for JamesCherrill

The last link you posted explains how to get and understand the magnitudes, so what exactly is your question?

Member Avatar for Vin vin

I just want to System.out.println(magnitudes[i]);
in the start method, but how do I even do that?
I tried this:

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.AudioSpectrumListener;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class AWF_Main extends Application implements AudioSpectrumListener {

    public final static String TITLE = "AWF special program";
    public final static short WIDTH = 1280;
    public final static short HEIGHT = 720;
    public static String AUDIO_FILE = "../mp3Music/Cynematic - Waterbased.mp3";
    public static String AUDIO_URI = AWF_Main.class.getResource(AUDIO_FILE).toExternalForm();

    private Stage window;
    private Scene mainS;
    private Group groupS;
    private AudioSpectrumListener asl;
    private static MediaPlayer audioMP;
    private float[] correctedMagnitude;

    @Override
    public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
        for(int i = 0; i < magnitudes.length; i++) {
            correctedMagnitude[i] = magnitudes[i] - audioMP.getAudioSpectrumThreshold();
            //System.out.println(correctedMagnitude[i]);
        }
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        groupS = new Group();
        mainS = new Scene(groupS, WIDTH, HEIGHT, Color.DEEPPINK);
        window = primaryStage;
        window.setScene(mainS);
        window.setTitle(TITLE);
        window.show();

        // setup media
        Media audioMedia = new Media(AUDIO_URI);
        audioMP = new MediaPlayer(audioMedia);
        audioMP.setAudioSpectrumListener(this);
        play();

        //correctedMagnitude[5], why 5, because I chosed a random number.
        System.out.println(correctedMagnitude[5]);
    }

    //audioMP.setVolume(0.02); is low, because I just like to listen in low volume while I listen to other music. (:
    public void play() {
        audioMP.play();
        audioMP.setVolume(0.02);
        audioMP.setAudioSpectrumInterval(60.0);
        audioMP.setAudioSpectrumNumBands(256);
    }

    public void stop() {
        System.out.println("program exited");
    }

    public static void main(String[] args) {
        launch(args);
    }
}

I don't want to use charts.

here is my Error:

Exception in Application start method
program exited
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
    at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
    at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
    at com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v1.AWF_Main.start(AWF_Main.java:52)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
    at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$3(WinApplication.java:177)
    ... 1 more
Exception running application com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v1.AWF_Main
Member Avatar for Vin vin

btw, this is a link too:
jnlps://download.oracle.com/otndocs/products/javafx/8/samples/Ensemble/Ensemble.jnlp
there is a audiobarchart.

Edited by Vin vin
Member Avatar for Vin vin 
at com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v1.AWF_Main.start(AWF_Main.java:52) = System.out.println(correctedMagnitude[5]);
Edited by Dani because: Sorry, accidentally removed )
Member Avatar for JamesCherrill

You can’t print those values in the start method. Start runs once and is finished before the music starts playing.
You can only access the values via the spectrum listener when the listener is called.

ps: you may want to have the listener called more that once per minute ;)

Edited by JamesCherrill
commented: how do I see when listener is called +0
commented: The old PRINT A; A=1: issue. Why did A print? +15
Member Avatar for JamesCherrill

how do I see when listener is called

OK, you seem to be missing some basic understanding here. It's just like using a listener for someone pressing a button.

You have set this as a audio spectrum listener. Which means:

  • this contains a spectrumDataUpdate listener method
  • when the media is playing JavaFX will reguarly call your spectrumDataUpdate method at the interval you have requested (60 seconds!) passing it the audio spectrum data for the latest interval.
  • In your spectrumDataUpdate method you do whatever you want with that data, eg correct the magnitudes and pass it to another method that displays it

PS: You may want to set a lower interval. The default is 0.1 seconds.

pps: It's best if you reply with a new post rather than a comment because new comments don't get prioretised in the "latest posts" listing that I'm monitoring.

Edited by JamesCherrill
Member Avatar for Vin vin

yes! Now I can finally use the values :D

this is my code: 

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.AudioSpectrumListener;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class AWF_Main extends Application implements AudioSpectrumListener {

    public final static String TITLE = "AWF special program";
    public final static short WIDTH = 1280;
    public final static short HEIGHT = 720;
    public static String AUDIO_FILE = "../mp3Music/Cynematic - Waterbased.mp3";
    public static String AUDIO_URI = AWF_Main.class.getResource(AUDIO_FILE).toExternalForm();

    private Stage window;
    private Scene mainS;
    private Group groupS;
    private static MediaPlayer audioMP;

    @Override
    public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
        System.out.println("data updated");
        displayMag(magnitudes);
        for(int i = 0; i < magnitudes.length; i++) {
            //correctedMagnitude[i] = magnitudes[i] - audioMP.getAudioSpectrumThreshold();
//            System.out.println("0"+magnitudes[0]);
//            System.out.println("1"+magnitudes[1]);
//            System.out.println("2"+magnitudes[2]);
//            System.out.println("3"+magnitudes[3]);
//            System.out.println("4"+magnitudes[4]);
//            System.out.println("5"+magnitudes[5]);
//            System.out.println("6"+magnitudes[6]);
//            System.out.println("7"+magnitudes[7]);
//            System.out.println("8"+magnitudes[8]);
//            System.out.println("9"+magnitudes[9]);
            //System.out.println(correctedMagnitude[i]);
        }
    }

    public void displayMag(float[] mag) {
        for(int i = 0; i < mag.length; i++) {
            System.out.println(i+": " + mag[i]);
        }
        System.out.println("length of mag = " + mag.length);
    }

    public void init() {
        Media audioMedia = new Media(AUDIO_URI);
        audioMP = new MediaPlayer(audioMedia);
        play();
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        groupS = new Group();
        mainS = new Scene(groupS, WIDTH/2, HEIGHT/2, Color.DEEPPINK);
        window = primaryStage;
        window.setScene(mainS);
        window.setTitle(TITLE);
        window.show();
    }

    //audioMP.setVolume(0.02); is low, because I just like to listen in low volume while I listen to other music. (:
    public void play() {
        audioMP.play();
        audioMP.setVolume(0.02);
        audioMP.setAudioSpectrumInterval(0.5);
        audioMP.setAudioSpectrumNumBands(256);
        audioMP.setAudioSpectrumListener(this);
        //AWF_newClass.printOutMagnitudes();
    }

    public void stop() {
        System.out.println("program exited");
    }

    public static void main(String[] args) {
        launch(args);
    }
}

I thought if I set the interval to 60, I thought it would update 60 times per second and I didn't noticed it

Edited by Vin vin
Member Avatar for Vin vin

this is what the console says:

data updated
0: -59.407444
1: -48.37642
2: -41.535774
3: -40.149982
4: -44.27457
5: -44.982887
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length of mag = 256
data updated
0: -58.938725
1: -46.33748
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3: -32.70217
4: -37.956696
5: -44.20575
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length of mag = 256
data updated
0: -59.207775
1: -49.29684
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3: -35.27126
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18: -48.772434
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23: -53.38032
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32: -54.873802
33: -54.326065
34: -55.058464
35: -54.908463
36: -56.590317
37: -55.40833
38: -54.537342
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40: -56.586964
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170: -59.978783
171: -59.84166
172: -59.84966
173: -59.787643
174: -59.854355
175: -59.96201
176: -60.0
177: -60.0
178: -60.0
179: -60.0
180: -60.0
181: -60.0
182: -60.0
183: -60.0
184: -59.979733
185: -60.0
186: -60.0
187: -60.0
188: -60.0
189: -60.0
190: -60.0
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192: -60.0
193: -60.0
194: -60.0
195: -60.0
196: -60.0
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199: -60.0
200: -60.0
201: -60.0
202: -60.0
203: -60.0
204: -60.0
205: -60.0
206: -60.0
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209: -60.0
210: -60.0
211: -60.0
212: -60.0
213: -60.0
214: -60.0
215: -60.0
216: -60.0
217: -60.0
218: -60.0
219: -60.0
220: -60.0
221: -60.0
222: -60.0
223: -60.0
224: -60.0
225: -60.0
226: -60.0
227: -60.0
228: -60.0
229: -60.0
230: -60.0
231: -60.0
232: -60.0
233: -60.0
234: -60.0
235: -60.0
236: -60.0
237: -60.0
238: -60.0
239: -60.0
240: -60.0
241: -60.0
242: -60.0
243: -60.0
244: -60.0
245: -60.0
246: -60.0
247: -60.0
248: -60.0
249: -60.0
250: -60.0
251: -60.0
252: -60.0
253: -60.0
254: -60.0
255: -60.0
length of mag = 256
program exited
Member Avatar for JamesCherrill

Looks like some very quiet music. (those numbers are deciBels)
While testing it will be more manageable if you have (say) 8 bands rather than 256.

I thought if I set the interval to 60, I thought it would update 60 times per second

I guessed that was the case. It's a really good example of why you should ALWAYS read the API doc for any method you're not familiar with.

Edited by JamesCherrill
Member Avatar for Vin vin

I got a error from this: "public static String AUDIO_URI = AWF_Core.class.getResource(AUDIO_FILE).toExternalForm();"
I made a new class, so the code looks more cleaner and readable.
but unfortunatly I don't know what happened?

I got a error:

Exception in thread "JavaFX Application Thread" Exception in thread "main" java.lang.ExceptionInInitializerError
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplicationWithArgs$2(LauncherImpl.java:352)
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
    at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$3(WinApplication.java:177)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
    at com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v7.v1.AWF_Core.<clinit>(AWF_Core.java:18)
    ... 11 more
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.NullPointerException
    at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:383)
    at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
    ... 5 more

this is how my project folders looks like in the navigator.

filesandprojectsIguess.PNG

here is my new code:

package com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v7.v1;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.AudioSpectrumListener;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class AWF_Core extends Application implements AudioSpectrumListener {

    public final static String TITLE = "AWF special program";
    public final static short WIDTH = 1280;
    public final static short HEIGHT = 720;
    public static String AUDIO_FILE = "../mp3Music/Cynematic - Waterbased.mp3";
    public static String AUDIO_URI = AWF_Core.class.getResource(AUDIO_FILE).toExternalForm();

    private Stage window;
    private Scene mainS;
    private Group groupS;
    private static MediaPlayer audioMP;

    @Override
    public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
        System.out.println("data updated");
        displayMag(magnitudes);
    }

    public void displayMag(float[] mag) {
        for(int i = 0; i < mag.length; i++) {
            System.out.println(i+": " + mag[i]);
        }
        System.out.println("length of mag = " + mag.length);
    }

    public void init() {
        Media audioMedia = new Media(AUDIO_URI);
        audioMP = new MediaPlayer(audioMedia);
        play();
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        groupS = new Group();
        mainS = new Scene(groupS, WIDTH/2, HEIGHT/2, Color.DEEPPINK);
        window = primaryStage;
        window.setScene(mainS);
        window.setTitle(TITLE);
        window.show();
    }

    //audioMP.setVolume(0.02); is low, because I just like to listen in low volume while I listen to other music. (:
    public void play() {
        audioMP.play();
        audioMP.setVolume(0.2);
        audioMP.setAudioSpectrumInterval(0.5);
        audioMP.setAudioSpectrumNumBands(256);
        audioMP.setAudioSpectrumListener(this);
        //AWF_newClass.printOutMagnitudes();
    }

    public void stop() {
        System.out.println("program exited");
    }

    public static void main(String[] args) {
        launch(args);
    }
}
Member Avatar for Vin vin

filesandprojectsIguess.PNG

that v7 -> v1 is not accidental. I just made a new package in v7.
if I placed the class just in v7, the error is gone and the music can play, but if the class is inside of v7.v1 then I get that error.

Member Avatar for JamesCherrill

if I placed the class just in v7, the error is gone and the music can play, but if the class is inside of v7.v1 then I get that error.

Then just place the class in v7! Faffing around with IDEs just a distraction from learning a language or API.

ps: putting JavaFX code in init() is generally a bad idea. The JavaFX environment is not fully ready at that time. You are much safer ignoring init()and putting everything in start(...)

Edited by JamesCherrill
Member Avatar for Vin vin

This is what I right now have:
Right now I am facing how to make these rectangles make more reactive like they change about 60 pixels maximal higher and I want to make it more than 60 pixels. Now I don't have a question this is just an update for my code.

package com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v_aa;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.AudioSpectrumListener;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class AWF_FX_v1 extends Application implements AudioSpectrumListener {

    public final static String TITLE = "AWF special program";
    public final static short WIDTH = 1280;
    public final static short HEIGHT = 720;
    public static String AUDIO_FILE = "../mp3Music/Cynematic - Waterbased.mp3";
    public static String AUDIO_FILE1 = "../mp3Music/AcerDroid -Skies.mp3";
    public static String AUDIO_FILE2 = "../mp3Music/Capturez - Patterns.mp3";
    public static String AUDIO_FILE3 = "../mp3Music/Kanooli - Instinct.mp3";
    public static String AUDIO_FILE4 = "../mp3Music/RavenKreyn_InTheAir_NCSrelease.mp3";
    public static String AUDIO_URI = AWF_FX_v1.class.getResource(AUDIO_FILE2).toExternalForm();

    private Stage window;
    private Scene mainS;
    private Group groupS;
    private MediaPlayer audioMP;
    private float[] cMag;

//  private Rectangle rect0;
//  private Rectangle rect1;
//  private Rectangle rect2;
//  private Rectangle rect3;
//  private Rectangle rect4;
//  private Rectangle rect5;
//  private Rectangle rect6;
//  private Rectangle rect7;

    private Rectangle[] rect = new Rectangle[8];

    @Override
    public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
        for (int i = 0; i < magnitudes.length; i++) {
            cMag = magnitudes;
            cMag[i] = (int) cMag[i];
            //System.out.println((i + 1) + ": " + (cMag[i] * -1));
        }
        for(int i = 0; i < rect.length; i++) {
            rect[i].setY(310 + ((cMag[i] + 60) * -1));
            rect[i].setHeight(50 + (cMag[i] + 60));
            System.out.println(i + " setY: " + rect[i].getY());
            System.out.println(i + " setHeight " + rect[i].getHeight());
        }

//ignore these comments down below, I tried two times how I did the rectangles thingies.        

//      //second try failed...
//      
////        rect0.setY(HEIGHT / 2 - 50 + (60 - cMag[0]));
////        rect0.setHeight(50 + (60 - cMag[0]));
////        System.out.println("rect0.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[0])) + "\nrect0.setHeight: " + (50 + (60 - cMag[0])));
////        
////        rect1.setY(HEIGHT / 2 - 50 + (60 - cMag[1]));
////        rect1.setHeight(50 + (60 - cMag[1]));
////        System.out.println("rect1.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[1])) + "\nrect1.setHeight: " + (50 + (60 - cMag[1])));
////        
////        rect2.setY(HEIGHT / 2 - 50 + (60 - cMag[2]));
////        rect2.setHeight(50 + (60 - cMag[2]));
////        System.out.println("rect2.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[2])) + "\nrect2.setHeight: " + (50 + (60 - cMag[2])));
////        
////        rect3.setY(HEIGHT / 2 - 50 + (60 - cMag[3]));
////        rect3.setHeight(50 + (60 - cMag[3]));
////        System.out.println("rect3.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[3])) + "\nrect3.setHeight: " + (50 + (60 - cMag[3])));
////        
////        rect4.setY(HEIGHT / 2 - 50 + (60 - cMag[4]));
////        rect4.setHeight(50 + (60 - cMag[4]));
////        System.out.println("rect4.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[4])) + "\nrect4.setHeight: " + (50 + (60 - cMag[4])));
////        
////        rect5.setY(HEIGHT / 2 - 50 + (60 - cMag[5]));
////        rect5.setHeight(50 + (60 - cMag[5]));
////        System.out.println("rect5.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[5])) + "\nrect5.setHeight: " + (50 + (60 - cMag[5])));
////        
////        rect6.setY(HEIGHT / 2 - 50 + (60- cMag[6]));
////        rect6.setHeight(50 + (60 - cMag[6]));
////        System.out.println("rect6.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[6])) + "\nrect6.setHeight: " + (50 + (60 - cMag[6])));
////        
////        rect7.setY(HEIGHT / 2 - 50 + (60 - cMag[7]));
////        rect7.setHeight(50 + (60 - cMag[7]));
////        System.out.println("rect7.setY: " + (HEIGHT / 2 - 50 + (60 - cMag[7])) + "\nrect7.setHeight: " + (50 + (60 - cMag[7])));
////        System.out.println();
//      
//      //first try failed...
//      
////        rect0.setTranslateY(100 + (cMag[0] * -1));
////        rect1.setTranslateY(100 + (cMag[1] * -1));
////        rect2.setTranslateY(100 + (cMag[2] * -1));
////        rect3.setTranslateY(100 + (cMag[3] * -1));
////        rect4.setTranslateY(100 + (cMag[4] * -1));
////        rect5.setTranslateY(100 + (cMag[5] * -1));
////        rect6.setTranslateY(100 + (cMag[6] * -1));
////        rect7.setTranslateY(100 + (cMag[7] * -1));
////        
////        rect0.setHeight(50 + ((cMag[0] * -1)  ));
////        rect1.setHeight(50 + (cMag[1] * -1));
////        rect2.setHeight(50 + (cMag[2] * -1));
////        rect3.setHeight(50 + (cMag[3] * -1));
////        rect4.setHeight(50 + (cMag[4] * -1));
////        rect5.setHeight(50 + (cMag[5] * -1));
////        rect6.setHeight(50 + (cMag[6] * -1));
////        rect7.setHeight(50 + (cMag[7] * -1));
    }

    @Override
    public void start(Stage primaryStage) {
        groupS = new Group();
        mainS = new Scene(groupS, WIDTH, HEIGHT, Color.DARKBLUE);
        window = primaryStage;
        window.setScene(mainS);
        window.setTitle(TITLE);
        window.show();

        Media audioMedia = new Media(AUDIO_URI);
        audioMP = new MediaPlayer(audioMedia);
        audioMP.play();
        audioMP.setCycleCount(MediaPlayer.INDEFINITE);
        audioMP.setVolume(0.02);
        audioMP.setAudioSpectrumInterval(0.01);
        audioMP.setAudioSpectrumNumBands(8);
        audioMP.setAudioSpectrumListener(this);

//      rect0 = new Rectangle(250, HEIGHT / 2 - 50, 50, 50);
//      rect0.setFill(Color.AZURE);
//      rect1 = new Rectangle(350, HEIGHT / 2 - 50, 50, 50);
//      rect1.setFill(Color.CORNFLOWERBLUE);
//      rect2 = new Rectangle(450, HEIGHT / 2 - 50, 50, 50);
//      rect2.setFill(Color.SPRINGGREEN);
//      rect3 = new Rectangle(550, HEIGHT / 2 - 50, 50, 50);
//      rect3.setFill(Color.YELLOWGREEN);
//      rect4 = new Rectangle(650, HEIGHT / 2 - 50, 50, 50);
//      rect4.setFill(Color.YELLOW);
//      rect5 = new Rectangle(750, HEIGHT / 2 - 50, 50, 50);
//      rect5.setFill(Color.ORANGE);
//      rect6 = new Rectangle(850, HEIGHT / 2 - 50, 50, 50);
//      rect6.setFill(Color.RED);
//      rect7 = new Rectangle(950, HEIGHT / 2 - 50, 50, 50);
//      rect7.setFill(Color.BLACK);

        rect[0] = new Rectangle(250, HEIGHT / 2 - 50, 50, 50);
        rect[0].setFill(Color.AZURE);
        rect[1] = new Rectangle(350, HEIGHT / 2 - 50, 50, 50);
        rect[1].setFill(Color.CORNFLOWERBLUE);
        rect[2] = new Rectangle(450, HEIGHT / 2 - 50, 50, 50);
        rect[2].setFill(Color.SPRINGGREEN);
        rect[3] = new Rectangle(550, HEIGHT / 2 - 50, 50, 50);
        rect[3].setFill(Color.YELLOWGREEN);
        rect[4] = new Rectangle(650, HEIGHT / 2 - 50, 50, 50);
        rect[4].setFill(Color.YELLOW);
        rect[5] = new Rectangle(750, HEIGHT / 2 - 50, 50, 50);
        rect[5].setFill(Color.ORANGE);
        rect[6] = new Rectangle(850, HEIGHT / 2 - 50, 50, 50);
        rect[6].setFill(Color.RED);
        rect[7] = new Rectangle(950, HEIGHT / 2 - 50, 50, 50);
        rect[7].setFill(Color.BLACK);

//      groupS.getChildren().add(rect0);
//      groupS.getChildren().add(rect1);
//      groupS.getChildren().add(rect2);
//      groupS.getChildren().add(rect3);
//      groupS.getChildren().add(rect4);
//      groupS.getChildren().add(rect5);
//      groupS.getChildren().add(rect6);
//      groupS.getChildren().add(rect7);

        for(int i = 0; i < rect.length; i++) {
            groupS.getChildren().add(rect[i]);
//          System.out.println(i);
        }
    }

    public void stop() {
        System.out.println("program exited");
    }

    public static void main(String[] args) {
        launch(args);
    }
}
Member Avatar for Vin vin

code without that comments lines:

package com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v_aa;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.AudioSpectrumListener;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class AWF_FX_v1 extends Application implements AudioSpectrumListener {

    public final static String TITLE = "AWF special program";
    public final static short WIDTH = 1280;
    public final static short HEIGHT = 720;
    public static String AUDIO_FILE = "../mp3Music/Cynematic - Waterbased.mp3";
    public static String AUDIO_FILE1 = "../mp3Music/AcerDroid -Skies.mp3";
    public static String AUDIO_FILE2 = "../mp3Music/Capturez - Patterns.mp3";
    public static String AUDIO_FILE3 = "../mp3Music/Kanooli - Instinct.mp3";
    public static String AUDIO_FILE4 = "../mp3Music/RavenKreyn_InTheAir_NCSrelease.mp3";
    public static String AUDIO_URI = AWF_FX_v1.class.getResource(AUDIO_FILE2).toExternalForm();

    private Stage window;
    private Scene mainS;
    private Group groupS;
    private MediaPlayer audioMP;
    private float[] cMag;

    private Rectangle[] rect = new Rectangle[8];

    @Override
    public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
        for (int i = 0; i < magnitudes.length; i++) {
            cMag = magnitudes;
            cMag[i] = (int) cMag[i];
        }
        for(int i = 0; i < rect.length; i++) {
            rect[i].setY(310 + ((cMag[i] + 60) * -1));
            rect[i].setHeight(50 + (cMag[i] + 60));
            System.out.println(i + " setY: " + rect[i].getY());
            System.out.println(i + " setHeight " + rect[i].getHeight());
        }
    }

    @Override
    public void start(Stage primaryStage) {
        groupS = new Group();
        mainS = new Scene(groupS, WIDTH, HEIGHT, Color.DARKBLUE);
        window = primaryStage;
        window.setScene(mainS);
        window.setTitle(TITLE);
        window.show();

        Media audioMedia = new Media(AUDIO_URI);
        audioMP = new MediaPlayer(audioMedia);
        audioMP.play();
        audioMP.setCycleCount(MediaPlayer.INDEFINITE);
        audioMP.setVolume(0.02);
        audioMP.setAudioSpectrumInterval(0.01);
        audioMP.setAudioSpectrumNumBands(8);
        audioMP.setAudioSpectrumListener(this);

        rect[0] = new Rectangle(250, HEIGHT / 2 - 50, 50, 50);
        rect[0].setFill(Color.AZURE);
        rect[1] = new Rectangle(350, HEIGHT / 2 - 50, 50, 50);
        rect[1].setFill(Color.CORNFLOWERBLUE);
        rect[2] = new Rectangle(450, HEIGHT / 2 - 50, 50, 50);
        rect[2].setFill(Color.SPRINGGREEN);
        rect[3] = new Rectangle(550, HEIGHT / 2 - 50, 50, 50);
        rect[3].setFill(Color.YELLOWGREEN);
        rect[4] = new Rectangle(650, HEIGHT / 2 - 50, 50, 50);
        rect[4].setFill(Color.YELLOW);
        rect[5] = new Rectangle(750, HEIGHT / 2 - 50, 50, 50);
        rect[5].setFill(Color.ORANGE);
        rect[6] = new Rectangle(850, HEIGHT / 2 - 50, 50, 50);
        rect[6].setFill(Color.RED);
        rect[7] = new Rectangle(950, HEIGHT / 2 - 50, 50, 50);
        rect[7].setFill(Color.BLACK);

        for(int i = 0; i < rect.length; i++) {
            groupS.getChildren().add(rect[i]);
        }
    }

    public void stop() {
        System.out.println("program exited");
    }

    public static void main(String[] args) {
        launch(args);
    }
}
Member Avatar for Vin vin

Nailed it :D

package com.VINSTORM.bleidorb.AudioWaveFormFX_V1.v_aa;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.AudioSpectrumListener;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class AWF_FX_v5 extends Application implements AudioSpectrumListener {

    public final static String TITLE = "AWF special program";
    public final static short WIDTH = 1280;
    public final static short HEIGHT = 720;
    public static String AUDIO_FILE = "../mp3Music/Cynematic - Waterbased.mp3";
    public static String AUDIO_FILE1 = "../mp3Music/AcerDroid -Skies.mp3";
    public static String AUDIO_FILE2 = "../mp3Music/Capturez - Patterns.mp3";
    public static String AUDIO_FILE3 = "../mp3Music/Kanooli - Instinct.mp3";
    public static String AUDIO_FILE4 = "../mp3Music/RavenKreyn_InTheAir_NCSrelease.mp3";
    public static String AUDIO_URI = AWF_FX_v1.class.getResource(AUDIO_FILE1).toExternalForm();

    private Stage window;
    private Scene mainS;
    private Group groupS;
    private MediaPlayer audioMP;
    private float[] cMag;
    private short power = 5;

    private Rectangle[] rect = new Rectangle[40];

    @Override
    public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
        for (int i = 0; i < magnitudes.length; i++) {
            cMag = magnitudes;
            cMag[i] = (int) cMag[i] * power;
            System.out.println("cMag (" + i + "): " + cMag[i]);
        }

        for(int i = 0; i < rect.length; i++) {
            rect[i].setY(500 + ((cMag[i] + (60 * power)) * -1));
            rect[i].setHeight(50 + (cMag[i] + (60 * power)));
        }
    }

    @Override
    public void start(Stage primaryStage) {
        groupS = new Group();
        mainS = new Scene(groupS, WIDTH, HEIGHT, Color.DARKBLUE);
        window = primaryStage;
        window.setScene(mainS);
        window.setTitle(TITLE);
        window.show();

        Media audioMedia = new Media(AUDIO_URI);
        audioMP = new MediaPlayer(audioMedia);
        audioMP.play();
        audioMP.setCycleCount(MediaPlayer.INDEFINITE);
        audioMP.setVolume(0.02);
        audioMP.setAudioSpectrumInterval(0.01);
        audioMP.setAudioSpectrumNumBands(40);
        audioMP.setAudioSpectrumListener(this);

        for(int i = 0; i < rect.length; i++) {
            rect[i] = new Rectangle();
            rect[i].setX(250 + (i * 20));
            rect[i].setY(500);
            rect[i].setWidth(10);
            rect[i].setHeight(50);
            rect[i].setFill(Color.hsb((360 / 40 * i), 0.8, 1));
            groupS.getChildren().add(rect[i]);
        }
    }

    public void stop() {
        System.out.println("program exited");
    }

    public static void main(String[] args) {
        launch(args);
    }
}
Member Avatar for JamesCherrill

Great! Well done.
JC

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