Help building my first audio module

Projects General Guidance
1

Hello, I’m just started on Arduinos and I’m trying to make this little sound module, with the following equipment, and an arduino one I really like this setup: https://docs.arduino.cc/built-in-examples/digital/toneMelody/ and have come up with the following logic after looking at arduino code for a while.

Note selection reads selected note

Makes selected note, noteValue1 and noteValues go up chromatically

Creates RootNoteValue

“Scale” module reads selected scale

Reads note selected

Assigns scaleValue to noteValue root note needs to become ScaleValue 1
in A minor, a is scaleValue 1, B is scaleValue 2, C is scaleValue3

Creates an array of notes in order of playing

“Octave” module reads selected value

Octave half/double of frequencies of the array

“Tempo” module reads value

Tempo value determines note duration through bpm equations

Outputs value for noteRest

“Playstyle” module reads selected value

Applies selected playstyle pattern (rising, descending, arpeggio, pentatonic, random) to the scaleValue array

Creates the 4 bar loop/melody that will be played (the note pattern)

“Fx” module reads if a button is being pressed

Turns on and off effects on the chain

Creates the effect

“Play Button” module

Adds effects to tone

This module inputs the four bar melody (note pattern) into the tone

Schedules to replay after the total noteDur + total noteRest have gone by

What do I need to use to create this and does this logic translate to arduino

IMG_1818
IMG_18182268×4032 1.89 MB

IMG_1819
IMG_18192268×4032 1.93 MB

2

Start small, and take one step at a time! A good starting point is to learn to generate and play notes with well defined timing and pauses. For decent audio volume you will need an audio amplifier and speaker.

For decent tone quality, you will need a low pass filter between the Arduino PWM output and the audio amplifier. A two stage RC filter with a rolloff at about 2 kHz is a reasonable choice.

If you want to play more than one tone at a time, learn about polyphonic synthesis.

Add one new feature at a time, testing as you go.

3

Thank you very much for the response, I will! I have done circuitry before and supercollider, but Arduino seems much more exciting and will be dedicating all the week to this project for my vacations
Using other code I have this running on a circuit with a buzzer on pin 8 and a button on pin 1``



#include "pitches.h"

int buttonOne = 1;
int buzzer = 8;


// notes in the melody:
int melody[] = {

  NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
};

int noteDurations[] = {

  4, 8, 8, 4, 4, 4, 4, 4
};

void setup() {
pinMode(buttonOne, INPUT_PULLUP); 
 
}

void loop() {


if (digitalRead(buttonOne) == LOW)
{
   // iterate over the notes of the melody:

  for (int thisNote = 0; thisNote < 8; thisNote++) {

    // to calculate the note duration, take one second divided by the note type.

    //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.

    int noteDuration = 1000 / noteDurations[thisNote];

    tone(8, melody[thisNote], noteDuration);

    // to distinguish the notes, set a minimum time between them.

    // the note's duration + 30% seems to work well:

    int pauseBetweenNotes = noteDuration * 1.30;

    delay(pauseBetweenNotes);

    // stop the tone playing:

    noTone(8);

  }
} 
  }

pitches.h

/*************************************************

 * Public Constants

 *************************************************/

#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978
4

More exciting than a supercollider?

1 Like
5

yes, supercollider didnt get me hooked up and I dropped programming for a moment but Ive since seen arduinos and decided to start again

6

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