Android Audio Decoding For Morse Code And PSK31
Jan 6, 2014
I have some software I need to write. I am planning to write two apps for Android, one of which will send and receive Morse code, and the other to send and receive PSK31 data.
Programming is not my strong point, and I am currently struggling on how to do this. I have researched the software, and I am having a hard time finding out how to decode the audio streams on Android. I have also had difficulty finding examples and source code as what I have found is mostly written in C/C++, whereas I need examples in Java.
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Jul 24, 2014
I'm currently working on a program that is supposed to translate morse code and then display the result and I'm stuck, my program has tons of errors when I try to compile.
public class Assignment10
{
public static void main ( String [] args )
{
String str = Input.getString("Please type in a word");
char [] letters = {'a','b','c','d','e','f','g',
[Code] .....
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Aug 26, 2014
I'm making a program that can read an input of English or Morse code and return an output of Morse code or English back. The English-->Morse works fine, but not Morse-->English. I'm pretty sure my solution lies in displaying the variable 'morseWord', but no matter where I put it, I always get an error saying the variable has not been initialized. Here's what it looks like now:
import java.util.Scanner;
public class pro1
{
static final String[] alpha = {"a", "b", "c", "d", "e", "f", "g", "h", "i",
"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
"v", "w", "x", "y", "z", " "};
static final String[] morse = {".-", "-...", "-.-/>/>.", "-..", ".", "..-.", "--.", "....", "..",
".---", "-.-/>/>", ".-..", "--", "-.", "---", ".--.", "--.-/>/>", ".-.", "...", "-", "..-",
"...-" ,".--" ,"-..-", "-.-/>/>-", "--..", " | "};
[Code] .....
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Jul 26, 2014
So I've been writing a program that converts user input from English to Morse Code and vice versa.
Here's my code:
public class Project1 {
private final static String [] English = { "a","b","c","d","e","f","g","h","i","j","k","l", "m","n","o","p", "q","r","s","t","u","v","w","x","y","z", " ","1","2","3","4","5","6","7","8","9","0"};
private final static String [] Morse = { ".-", "-...", "-.-/>/>/>/>.", "-..", ".", "..-.", "--.", "....", "..",".---", "-.-/>/>/>/>", ".-..", "--", "-.", "---", ".--.", "--.-/>/>/>/>", ".-.", "...", "-","..-","...-" , ".--" ,"-..-","-.-/>/>/>/>-", "--..", "|", ".----", "..---", "...--", "....-", ".....", "-....","--...","---..", "----.", "-----" };
public static void main( String [] args ) {
int n = Input.getInt( "Enter 1 for Morse to English, 2 for English to Morse." );
switch ( n ) {
[Code] ....
When I compile my program, I get the error message: "illegal start of expression" at my toEnglish and toMorse methods, as well as " ';' expected " at the same place.
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Aug 25, 2014
I'm having some trouble with getting this program to read an input of morse code and then produce an output of English. When typing in morse code for the phrase 'the string', the output looks something like this:
- .... .
t
h
... - .-. .. -. --.
s
t
r
i
n
The English-->Morse works just fine.
import java.util.Scanner;
public class project1
{
static final String[] alpha = {
"a", "b", "c", "d", "e", "f", "g", "h", "i",
"j", "k", "l", "m", "n", "o", "p", "q", "r",
"s", "t", "u", "v", "w", "x", "y", "z", " "
[Code] .....
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Apr 18, 2014
I worked on this simple client server chat app and it worked now for my project i needed to work on client server audio streaming broadcast but i dont really know much bout audio api and methods on java...
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Nov 23, 2014
I wanted to know some hints on where to begin if I wanted to create a program which compares an audio file with real time captured audio. I found this website "[URL]...", but I think this would not do the job, so what are the basics of audio in java and how to compare audio files and see if they are compatible.
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Jan 29, 2015
I need to encode the URL in order to prevent XSS security threat. I don't have to encode the complete URL, I just have to encode the values for query string. How to encode only the values of query string parameters and change it in the URL itself using java. I am planning to do this in a filter.
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Oct 11, 2014
I am having right now is that I don't know how to stop my music from playing? I am making a Connect 4 game with some audio to make it intuitive. Below is my code. This is my Music method.
public static void Music() {
try {
File music = new File("C:\Users\Ken\workspace\Assignment1\src\Mario1.wav");
AudioInputStream audioIn = AudioSystem.getAudioInputStream(music);
Clip clip = AudioSystem.getClip();
clip.open(audioIn);
[Code] ....
I called this method into a JButton i implemented into my main GUI.
if (e.getSource() == SoundOn){
Music();}
if (e.getSource() == SoundOff){
//What do I put here?
}
There is the method and my JButton.
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Mar 20, 2015
How to read an audio file in java?
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Jul 22, 2014
I'm trying to learn how to Pause/Resume audio in an applet .
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Apr 18, 2014
I'm doing a little game in Java and I would like to insert a background music managed by a JButton. When the button is pressed, the music starts and then, to stop it, the button is pressed again. If you don't press the button to stop the music remains in the loop until the player plays.
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May 13, 2014
I've moved working code over to a different computer, a 32 bit Dell PC running Win7 under Netbeans and Java 8. I can't get it to play or synthesize any sounds because it can't get any Mixers. I tried adding the standard provider entries to the sound.properties file (they aren't needed in my other computer, but I had to try), and it made no difference. I've tracked down the problem farther by getting the source code for these classes and stepping through.
The system seems to have the Mixer providers, but in java.util.ServiceLoader.LazyIterator$nextService() it is looping through a set of javax.sound.sampled.spi.MixerProviders and it hits the following error:
try {
S p = service.cast(c.newInstance());
providers.put(cn, p);
return p;
} catch (Throwable x) {
fail(service,
"Provider " + cn + " could not be instantiated",
x);
}
why this is happening?
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Apr 17, 2015
I used the following but there's an IOexception. How can I set it up so that it can play audio even after the jar is built?
public void play(){
InputStream in = null;
try {
in = new FileInputStream(new File(filename));
AudioStream audioStream = new AudioStream(in);
AudioPlayer.player.start(audioStream);
in.close();
[Code]...
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Feb 18, 2015
I've been experiencing problems with the JMF extension when used in an Applet on the web. The program has worked fine previously but not returns the following error...
PackageManager: error reading registry
javax.media.NoPlayerException: Cannot find a Player for : [filename]
at javax.media.Manager.createPlayerForContent(Manager .java:1412)
at javax.media.Manager.createPlayer(Manager.java:417)
[Code] .....
However the program works fine in Eclipse with no errors. I have tried reinstalling the JMF package and setting the CLASSPATH and JMFHOME but it still does not work. I am using the jmf-2_1_1e-alljava version. I have also tried putting the player code in an AccessController.doPrivileged() block but this still does not seem to work.
My code for the player is as follows....
private void play(final String track) {
Thread dispatch = new Thread() {
public void run() {
try {
if(player!=null)
player.close();
[Code] .....
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Jun 26, 2014
how to play audio in a stand alone application.
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Dec 15, 2014
I am making a little game for my friend based on HTML and javascript and i was wondering how to play an audio file that i downloaded on to my computer without the user interacting. like a buzzer you would hear on jeopordy or something like that, creating a Wrong answer buzzer and a right answer buzzer into an if/else statement.
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Oct 15, 2014
I am trying to make my audio loop and i tried the code below
public void audioloop() {
AudioPlayer MGP = AudioPlayer.player;
AudioStream BGM;
AudioData MD;
ContinuousAudioDataStream loop = null;
try {
[Code] ....
But is not working. I was thinking may be API is not work with java 7 because i got the following warning (AudioStream is internal proprietary API and may be removed in a future release);
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Jan 30, 2015
I am a visual effects artist not a programmer but I wanna create a very basic translation software to improve english language in primary school students in my country. I cannot program at all except html and css but I am willing to do and learn whatever it takes to make this work. I don't know where to start from or what language to use. The structure of the program is to type an english word and then it must give out a translation of my local language and vice versa and I would like to add audio to the words.
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Jun 1, 2014
I am planning to develop an application that does the following:
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What is the best practive for doing this? I tried several things without success.
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Apr 14, 2014
I am trying to run a project and i am getting different errors, I know the code is working because i have seen it running, but now i cant even get the app to load up. sometime I get a AndroidManifest cannot be found error and sometimes i get a error like
[2014-04-14 17:28:31 - DatabasePrototype5] Failed to install DatabasePrototype5.apk on device 'emulator-5554!
[2014-04-14 17:28:31 - DatabasePrototype5] (null)
[2014-04-14 17:28:32 - DatabasePrototype5] Launch canceled!
my AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.databaseprototype5"
android:versionCode="1"
android:versionName="1.0" >
[Code] ....
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Nov 11, 2014
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Feb 8, 2015
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The app is a very simple comic strip viewer that views 3 panels of a comic strip one at a time. My problem is going from a second activity to another. I can go from the main activity to the second fine but when I press the next button to go from the second activity to the third nothing happens. I have tried a few different things but end up with either nothing happening or the app crashes.
Here is my MainActivity Code:
package net.androidbootcamp.comicapp;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
[Code]...
Here is the code for the second panel:
package net.androidbootcamp.comicapp;
import android.app.Activity;
import android.os.Bundle;
public class Panel2 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
[Code]...
Here is the code for Panel 3:
package net.androidbootcamp.comicapp;
import android.app.Activity;
import android.os.Bundle;
public class Panel3 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
[Code]...
And here is the manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="[URL].."
package="net.androidbootcamp.comicapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
[Code]...
I am sure it is something very simple but I am not sure what it could be.
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Jun 4, 2014
I have an integer variable called 'selectedname' which is declared as shown below.
public class MainActivity extends Activity implements View.onclickListener, AdapterView.OnItemClickListener {
int selectedname;
So when the app starts an Alert Dialog with two buttons asks the user if they want to tell the first or the last name. The two buttons are 'first' and 'last'.
The problem I'm facing is that in the code the value of selectedname is suppose to change depending on the users choice as shown below.
public void displayWelcome() {
//*other code comes here but it works fine*
AlertDialog.Builder choice = new AlertDialog.Builder(this);
choice.setTitle("Yo!");
choice.setMessage("First name or last");
choice.setPositiveButton("First", new DialogInterface.onclickListener() {
public void onclick(DialogInterface dialog, int whichButton) {
selectedname = 1;
[Code] .....
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Feb 5, 2015
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="net.graphicport.homeinventory" >
<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.INTERNET" />
[code]...
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Jul 17, 2014
I am trying to present the user with a response of 'correct' or 'incorrect'. I do the following, but mResultTextView never updates.
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android.os.SystemClock.sleep(1000);
I think the problem is that my view needs to be re-drawn.
package com.example.quiz;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Random;
import android.graphics.Color;
[code]...
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