Arduino Sound Generation: Automatic Examples

All sound is generated "purely" by an Arduino and a 6 bit R2R network.


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http://little-scale.blogspot.com

Category:

Music

Tags:

• little
• scale
• adelaide
• seb
• tomczak
• electronic
• arduino
• physical
• computing
• synthesis
• waveform
• wave
• shape

[teabagtime]

Jesus, I had no idea the arduino was capable of such noise generation! What isthis R2R network you speak of?

[littlescale]

imagine you have say four pins. each pin represents a bit of data (ie, we have a four bit byte).

By connecting a network of resistors to the outputs of the four bits, you basically get a voltage value that is a ratio of the byte value compared to a full byte as a voltage of the voltage that is logical 1.

[littlescale]

So if we are dealing with four bits and the Arduino, 1111 will give us 5V and 0000 will give us 0V. There are sixteen possible voltage values (inclusive 5v and 0v), because there are 4 bits.

[teabagtime]

So you've got a 16-bit audio synth? That's excellent news, I might just have to play with that...

[littlescale]

why 16?

you have 6 pins on PORTD, 6 pins on PORTB and 6 pins on PORTC = 18 digital i/o pins.

but... there will be speed issues (probably / maybe)

[littlescale]

also, nice name!

[ZorroKuugen]

please tell how to make this synth. i was looking for in your page but I can't find it

[GENARO6200]

Hola! Muy bien APENA vi tu Proyecto Una pregunta se puede simular un sonido diesel al mismo tiempo simulando un control de Velocidad?

[GENARO6200]

Hola! muy bien apena vi tu proyecto una pregunta se puede simular un sonido diesel simulando con control de velocidad?

[raccoonnyc]

good scope sync! Made for a very interesting visual display. For a moment there I thought I was tripping :)

[jexphe2k]

nice work! can you give me the code for that, original or altered version is fine with me. I want to play with that!