How To Generate Music Tone Using Pic Microcontroller?

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earlbesario

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HI...

I want to build music tone using pic16f84? so i can make a sound. This is to be used in our project in Microcontroller subject (ex: a pic musical doorbell project).

How to understand the conversion of the tones in assembly codes...?
How to do that?

Can anybody show me how to convert any music to an assembly program?
 
Essentially you just turn a pin ON and OFF to generate a tone, you might have a look at this C example for ring tones
 
earlbesario said:
Can anybody show me how to convert any music to an assembly program?
Click to expand...
It should be other way isn't it????.....
A beep is generated from turning on & off an output pin number of times. But for buzzers it different. & to generate a tone or Tune need some effort to do that.

A simple method is applied here for PIC16F84A
**broken link removed**
 
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Thanks for the reference ()
...so i need to understand about RTTTL (Ringing Tones Text Transfer Language)..Can anybody explain what is RTTT..pls?
so i can convert music tone to assembly code...I will use piezo speaker of my project...i'll just hope that it will create a different sounds with 2 or more inputs...

i really need effort of this.....

tnx...
 

The website above has links to everything you need to know, you don't have to use RTTL - it's just convenient if you want to play tunes.
 

You do not need to understand RTTT. It would be overkill.

The article mentioned by Gayan Soyza should be what you need to do.

A speaker is easier to use then a piezo. The hardware as laid out in the ringtone page would work. Use a 47uF cap.
 
3v0 said:
The article mentioned by Gayan Soyza should be what you need to do.
Click to expand...

I have built that circuit and tried the programs on the site and can confirm that it works fine.
 
I managed to do this on an AVR and plays decent music (Square Wave) I shall post the programme soon... It is capable of playing 4 octaves...
 
I don't especially know much about microcontrollers, but couldn't you generate a bit more of a sine wave-type sound using cap(s) and an D/A convertor? Juuust wondering.

EDIT: Just to clarify, I meant by using a D/A convertor to step the voltage up, then down and caps to antialias the wave.
 
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yes, you could certainly use a DAC. The ideas that people are putting forth are about using one or 2 pins. A parallel DAC will take 8-10-12 pins while a serial DAC will take fewer pin but is a bit more complex to use. I would not use parallel with a uC but rather a serial one. However, I didn;'t get the sense you needed all that great quality.

Look at the Roman Black page - his algorithm actually produces fairly good sound quality with 2 output pins.

By the way, a DAC doesn't step the voltage up or down but rather you tell it what voltage level to output, thus tracking the waveform you are trying to reproduce.
 
that's called an R-2R ladder and it is, in fact, a simple DAC. 8 bit, simple low pass filter.

it uses an RC oscillator for the clock so it will be pretty innacurate - better to use a real crystal.
 
philba said:
that's called an R-2R ladder and it is, in fact, a simple DAC. 8 bit, simple low pass filter.

it uses an RC oscillator for the clock so it will be pretty innacurate - better to use a real crystal.
Click to expand...

It doesn't matter for this application, and it gives the advantage that you can add a poteniometer and make the speed variable if you want.
 
Listen to the quality of this project written with Proton+

**broken link removed**
**broken link removed**
 
generating melody ...

Hello! I'm new at pic programming, is this pic : PIC16F87, is good for the

can i replace the PIC16F876 by the pic16f87?

thank you soo much!
Have a good night!
marC
 
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