getAudioInput not defined

[Quinn1876]

Hello,

I am currently trying to run the AudioInput example for mozi, but it will not compile.

Here is the code for reference:

/*  Test of audio input using Mozzi sonification library.

 An audio input using the range between 0 to 5V on analog pin A0
 is sampled and output on digital pin 9.

  Configuration: requires these lines in the Mozzi/mozzi_config.h file:
  #define USE_AUDIO_INPUT true
  #define AUDIO_INPUT_PIN 0

 Circuit:
 Audio cable centre wire on pin A0, outer shielding to Arduino Ground.
 Audio output on DAC/A14 on Teensy 3.0, 3.1, or digital pin 9 on a Uno or similar, or
 check the README or http://sensorium.github.io/Mozzi/

        Mozzi help/discussion/announcements:
  https://groups.google.com/forum/#!forum/mozzi-users

  Tim Barrass 2013, CC by-nc-sa.
*/

#include <MozziGuts.h>

void setup(){
  startMozzi();
}

void updateControl(){
}

AudioOutput_t updateAudio(){
  int asig = getAudioInput(); // range 0-1023
  asig = asig - 512; // now range is -512 to 511
  // output range in STANDARD mode is -244 to 243,
  // we scale down only by one bit, so you might need
  // to adjust your signal to suit
  return MonoOutput::fromAlmostNBit(9, asig).clip();
}

void loop(){
  audioHook();
}

Compile Error: error: 'getAudioInput' was not declared in this scope int asig = getAudioInput(); // range 0-1023

I looked around, but I could not find documentation for the following line: Configuration: requires these lines in the Mozzi/mozzi_config.h file:

Which config file do I need to add these lines too? Do I need to make this file path in the sketch directory or is there a global config file that I was supposed to change. If so, where do I find it?

Any help in this matter would be appreciated.

[tomcombriat]

Hi!

Indeed, Mozzi needs to be configured to use the AudioInput feature. For that you need to edit the file mozzi_config.h :

//#define USE_AUDIO_INPUT true should be : #define USE_AUDIO_INPUT true

To find this file, open your sketchbook folder (open Arduino's preferences to find where it is if you do not know), then libraries/Mozzi.

Hope this helps!

[tomcombriat]

Hi @Quinn1876!

Did that help? Can this issue be closed?