Welcome! You are here because you are trying to connect your Arduino board to Simulink to transmit some data (maybe some sensor output) but everything is going wrong and your world is falling apart ...

int bands = 512; // Numero total de bandas en el espectro de audio int numCols = 12; // Numero de columnas en la matriz float[] Spectrum = new float[bands]; // Matriz para guardar los nuevos datos de ...