Hello i have a problem with this code. i got it as it is and i have not to much knowledge to repair it.
so when i run it i have the error "Syntrax error, maybe a missing semicolon?" what is wrong??

were is the cobe:

        import krister.Ess.*;
   import processing.serial.*;

   // “bufferSize” defines the buffer used to read and
   // process the signal from the microphone
   int bufferSize;

   // “steps” and “limitDiff” define the scale of the reading
   int steps;
   float limitDiff;

   // numAverages defines the number of averages computed between
   // the reading of all the frequency bands
   int numAverages=3;

   // the value of “Damp” defines on how similar and smooth should be
   // the frequency band

   float myDamp=.1f;

   // “maxLimit” and “minLimit” define the lowest and the highest value
   // of the reading scale
   float maxLimit,minLimit;

   // “bass”, “medium” and “high” are the variable that will store the
   // output value to be sent to the Arduino board
   int bass;
   int medium;
   int high;

   // “myPort” is dedicated to the Serial port
   Serial myPort;

   // “myFFT” is dedicated to store the array with all the readings
   FFT myFFT;

   // “AudioInput” is the variable to store the audio
   AudioInput myInput;
   
       void setup () {
   size(700,221);// start up Ess
   Ess.start(this);

   // set up our AudioInput
   bufferSize=32;
   myInput=new AudioInput(bufferSize);

   // set up our FFT
   myFFT=new FFT(bufferSize*2);
   myFFT.equalizer(false);

   // set up our FFT normalization/dampening
   minLimit=.005;
   maxLimit=.05;
   myFFT.limits(minLimit,maxLimit);
   myFFT.damp(myDamp);
   myFFT.averages(numAverages);

   // get the number of bins per average
   steps=bufferSize/numAverages;

   // get the distance of travel between minimum and maximum limits
   limitDiff=maxLimit-minLimit;

   frameRate(25);

   myInput.start();
   myPort = new Serial(this, Serial.list()[2], 115200);
   }
   
       void draw() {
   background(0,0,255);

   // draw the waveform

   noStroke();
   fill(255,128);

   // draw the spectrum

   for (int i=0; i
   rect(10+i,10,1,myFFT.spectrum[i]*200);
   }
   
       // draw our averages
   for(int i=0; i)

   {
   int tuning=74;
   fill(255,128);
   rect(10+i*steps,10,steps,myFFT.averages[i]*200);
   fill(255);
   rect(10+i*steps,(int)(10+myFFT.maxAverages[i]*200),steps,1);
   rect(10+i*steps,10,1,200);
   
   int bass = int(myFFT.averages[0]*tuning);
int medium = int(myFFT.averages[1]*tuning);
int high = int(myFFT.averages[2]*tuning);
println(byte(bass+33));
println(medium+108);
println(high+183);
myPort.write(byte(bass+33));
myPort.write(byte(medium+108));
myPort.write(byte(high+183));
}

public void audioInputData(AudioInput theInput) {
myFFT.getSpectrum(myInput);
}

what i could fill to complete it?

This is the original post which i got the code, it might help you. i try everithing but..nothing!!

The final Processing code. To process the sound I used the ESS library that reads the spectrum of a sound source. The website of this library can be found here: Link.
The following code is taken by the library website, and changed by me to make it work with my installation
Here I import the Ess library and the serial one, and initialize all the variables needed for the script to run.

   import krister.Ess.*;
   import processing.serial.*;

   // “bufferSize” defines the buffer used to read and
   // process the signal from the microphone
   int bufferSize;

   // “steps” and “limitDiff” define the scale of the reading
   int steps;
   float limitDiff;

   // numAverages defines the number of averages computed between
   // the reading of all the frequency bands
   int numAverages=3;

   // the value of “Damp” defines on how similar and smooth should be
   // the frequency band

   float myDamp=.1f;

   // “maxLimit” and “minLimit” define the lowest and the highest value
   // of the reading scale
   float maxLimit,minLimit;

   // “bass”, “medium” and “high” are the variable that will store the
   // output value to be sent to the Arduino board
   int bass;
   int medium;
   int high;

   // “myPort” is dedicated to the Serial port
   Serial myPort;

   // “myFFT” is dedicated to store the array with all the readings
   FFT myFFT;

   // “AudioInput” is the variable to store the audio
   AudioInput myInput;

At this point I start with the setup of the stage, I initialize the libraries and call all the functions to read the audio

   void setup () {
   size(700,221);// start up Ess
   Ess.start(this);

   // set up our AudioInput
   bufferSize=32;
   myInput=new AudioInput(bufferSize);

   // set up our FFT
   myFFT=new FFT(bufferSize*2);
   myFFT.equalizer(false);

   // set up our FFT normalization/dampening
   minLimit=.005;
   maxLimit=.05;
   myFFT.limits(minLimit,maxLimit);
   myFFT.damp(myDamp);
   myFFT.averages(numAverages);

   // get the number of bins per average
   steps=bufferSize/numAverages;

   // get the distance of travel between minimum and maximum limits
   limitDiff=maxLimit-minLimit;

   frameRate(25);

   myInput.start();
   myPort = new Serial(this, Serial.list()[2], 115200);
   }

I start by drawing on the stage the waveform and the spectrum

   void draw() {
   background(0,0,255);

   // draw the waveform

   noStroke();
   fill(255,128);

   // draw the spectrum

   for (int i=0; i
   rect(10+i,10,1,myFFT.spectrum[i]*200);
   }

Then we start to calculate the averages. As I set up the numAverages to be 3, the loop will continue as long as the “i” variable will not reach the number of 3. I declare the variable “tuning”, that I always use as a multiplier in case the signals that I get become too low. Than I draw 3 rectangles, each one set to be tall as the average of the first, second and third frequency range.

   // draw our averages
   for(int i=0; i)

   {
   int tuning=74;
   fill(255,128);
   rect(10+i*steps,10,steps,myFFT.averages[i]*200);
   fill(255);
   rect(10+i*steps,(int)(10+myFFT.maxAverages[i]*200),steps,1);
   rect(10+i*steps,10,1,200);

Now, I start to retrieve the final values that I have to send to the board. I transform the value into an integer, as the “myFFT” variable was decleares as a float, and multiply the result by the “tuning” variable, that I can easily adjust if I should need to do so. I print everything on the Processing console for debugging, and then send the values to Arduino. Note that I added 33 to the “bass” variable, 108 to the “medium” and 183 to the “high”. I did so because Arduino will read the range between 33 and 108 and assign the value to the pin dedicated for the bass fan.

   int bass = int(myFFT.averages[0]*tuning);
   int medium = int(myFFT.averages[1]*tuning);
   int high = int(myFFT.averages[2]*tuning);
   println(byte(bass+33));
   println(medium+108);
   println(high+183);
   myPort.write(byte(bass+33));
   myPort.write(byte(medium+108));
   myPort.write(byte(high+183));
   }

At the end I call the function that reads the input from the soundcard

   public void audioInputData(AudioInput theInput) {
   myFFT.getSpectrum(myInput);
   }

ok. i will work on it
thank you for your time

Starting with the original code from Reply 4 then to draw the spectrum the following should work.
Code:

for (int i=0; i < myFFT.spectrum.length; i++){
   rect(10+i,10,1,myFFT.spectrum[i]*200);
}
 

From the comments
Quote:


On that premise I think it should look like
Code:

// numAverages has already been set to 3
// draw our averages
for(int i=0; i < numAverages; i++) {
   int tuning=74;
   fill(255,128);
   rect(10+i*steps,10,steps,myFFT.averages[i]*200);
   fill(255);
   rect(10+i*steps,(int)(10+myFFT.maxAverages[i]*200),steps,1);
   rect(10+i*steps,10,1,200);
}
 

Hope this works.