Need help with a Java programming problem: You are given a file chords.txt where

Question

Need help with a Java programming problem:

You are given a file chords.txt where each line contains three double values. The first value is a duration and the second and third values are frequencies. Place this file into the data folder on Eclipse.

chords.txt:

Once again you are to read values in from a file but you must be careful in doing this as different values mean different things. After you open the file, follow this pseudocode:

Note that we are now using nested loops.

To play a chord, you will need a different method and that's included here:

Explanation / Answer

//Following is the code to read chords.txt file and run chords

import java.applet.*;

import java.io.*;

import java.net.*;

import stdlib.StdAudio;

public class Chords{

//The function to play chord as provided

     public static void playChord(double duration, double[] frequencies) {

                final int sliceCount = (int) (StdAudio.SAMPLE_RATE * duration);

                final double[] slices = new double[sliceCount+1];

                for (int i = 0; i <= sliceCount; i++) {

                        double chord = 0.0;

                        for (double frequency: frequencies) {

                                chord += Math.sin(2 * Math.PI * i * frequency / StdAudio.SAMPLE_RATE);

                        }

                        slices[i] = chord/frequencies.length;

                }

                StdAudio.play(slices);

        }

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

//Reading chords.txt file

BufferedReader br = new BufferedReader(new FileReader("chords.txt"));

             String line=null;

//read file till end

while( (line=br.readLine()) != null) {

                    double duration; // variable to store duration

                    double[] frequencies= new double[2]; //frequency array of length=2

String[] splitStr = line.split("\s+"); // split the line read by spaces

                    duration=Double.parseDouble(splitStr[0]); //store duration

                    frequencies[0]=Double.parseDouble(splitStr[1]);

                    frequencies[1]=Double.parseDouble(splitStr[2]);

                    playChord(duration,frequencies); //play the chords

             }

     }

}

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