# Sound processing IN and OUT issues

**URL:** https://discourse.processing.org/t/sound-processing-in-and-out-issues/33006
**Category:** Electronics (Arduino, etc.)
**Created:** [October 22, 2021, 11:09am UTC](https://discourse.processing.org/t/sound-processing-in-and-out-issues/33006 "2021-10-22T11:09:13Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Travasso](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@Travasso](https://discourse.processing.org/u/Travasso)
#### Post date: [October 22, 2021, 11:09am UTC](https://discourse.processing.org/t/sound-processing-in-and-out-issues/33006/1 "2021-10-22T11:09:13Z")

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Hi everyone, I am having some problems with my code, and maybe someone could help me.

I am doing a code where I use sensors to start audio playback and to start some sound effects. When I separate the codes - audio playback code and sound effects code - they work perfectly, but together, the sound effects part doesn’t work. Regarding the sound effects, they are to be used over the input of a micro and not over audio reproduction.  
Thanks in advance.

My code:

```auto
import javafx.scene.layout.Background;
import processing.serial.*;
import processing.sound.*;
import cc.arduino.*;
import ddf.minim.*;

Minim minim;//leitor de audio

//player e criar a lista de faixas
AudioPlayer player;
String[] viagens = {
  "1.mp3", "2.mp3", "3.mp3", "4.mp3", "5.mp3"
}
;
int current=0;
//abrir canal de micro e efeito de delay reverb e whitenoise
AudioIn in;
Delay delay;
Reverb reverb;
Arduino arduino;

//definir as portas de cada sensor
int sensorPin1 = 8;
int sensorPin2 = 9;
int sensorPin3 = 10;
int sensorPin4 = 11;
int sensorPin5 = 12;

void setup() {
  size(1200, 700);
  background(random(255));
  frameRate(10);

  // Modify this line, by changing the "0" to the index of the serial
  // port corresponding to your Arduino board (as it appears in the list
  // printed by the line above).
  arduino = new Arduino(this, Arduino.list()[2], 57600);

  // Alternatively, use the name of the serial port corresponding to your
  // Arduino (in double-quotes), as in the following line.
  //arduino = new Arduino(this, "/dev/tty.usbmodem621", 57600);

  // Set the Arduino digital pins as inputs.
  //for (int i = 0; i <= 13; i++)
  arduino.pinMode(sensorPin1, Arduino.INPUT);
  arduino.pinMode(sensorPin2, Arduino.INPUT);
  arduino.pinMode(sensorPin3, Arduino.INPUT);
  arduino.pinMode(sensorPin4, Arduino.INPUT);
  arduino.pinMode(sensorPin5, Arduino.INPUT);

  // Create an array of empty soundfiles
  minim = new Minim(this);
  
 int zardSon = int(random(viagens.length));
 String son = viagens[zardSon];
 player = minim.loadFile(son);
 player.pause();
 background(0);
 
    // create the input stream
  in = new AudioIn(this, 0);

  // create a delay effect
  delay = new Delay(this);
    
  // Patch the delay
  delay.process(in, 5);
  delay.time(0.9);
  
  //patch the reverb
  reverb = new Reverb(this);
reverb.room(0.9);
  reverb.damp(0.9);
  reverb.wet(0.7);

  
in.play();

}
void draw() {
  //read a digital value from the sensor pin
  int val = arduino.digitalRead(sensorPin1);
  int val1 = arduino.digitalRead(sensorPin2);
  int val2 = arduino.digitalRead(sensorPin3);
  int val3 = arduino.digitalRead(sensorPin4);
  int val4 = arduino.digitalRead(sensorPin5);

  //change the background accordingly
  
  if (val == Arduino.HIGH) {
    // se não está a tocar, começa a tocar
    if (!player.isPlaying())
    {
       
       int zardSon = int(random(viagens.length));
      String son = viagens[zardSon];
     player = minim.loadFile(son);
      player.play();
       player.setVolume(0.2);
    } 
    // caso contrário faz-se rewind
 
    background(100,0,0);
  } 
  // se não houver sinal o background fica a negro
  else background(0);
  
  if (val1 == Arduino.HIGH) {
    player.pause();
    
    background(51);
  } 
  if (val2 == Arduino.HIGH) {  
     
     reverb.process(in);
    
   } 
   if (val3 == Arduino.HIGH) {
    
     delay.process(in);
 
 }
     
     if (val4 == Arduino.HIGH) {       
       delay.stop();
 
  reverb.stop();

       
  
        
   }
  else background(0);

}

```

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<div class="post-metadata">

### Author: ![robertesler](https://avatars.discourse-cdn.com/v4/letter/r/ec9cab/32.png) [@robertesler](https://discourse.processing.org/u/robertesler)
#### Post date: [October 22, 2021, 6:13pm UTC](https://discourse.processing.org/t/sound-processing-in-and-out-issues/33006/2 "2021-10-22T18:13:47Z")

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Hi @Travasso. Is there a reason you are using both Minim and Processing Sound? In general it’s not a best practice to mix sound libraries as they can compete for resources, but it can work. I can actually get both working based on your example, except I don’t have an Arduino to test the serial port. That may be the source of your problem. Have you tried playing back your audio files using Processing Sound instead?

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### Author: ![Travasso](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@Travasso](https://discourse.processing.org/u/Travasso)
#### Post date: [October 22, 2021, 6:29pm UTC](https://discourse.processing.org/t/sound-processing-in-and-out-issues/33006/3 "2021-10-22T18:29:31Z")

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Hi Robert, thanks for you help.  
Actually I solved the problem creating two channels In.

Arduino in, in1;

And using the effects on those different channels.

My point is to play an instrument with the audio and process my instrument with the effects triggered through the sensors.