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Making music with AVR???

2009-05-19 by Tim Mitchell

I've been asked to make a device which will produce sounds, notes and
music. This is an add on to a unit controlled by a mega128.
We've previously made something for this customer which plays back WAV
samples off a compact flash card, but this time they would like
something more synthesised. We have also made a simple synth using a
mega8 generating a wave using PWM from a wavetable, but it's very basic
and sounds it.

Mobile phones do this sort of thing routinely these days, but you can't
get the "synth" chips you used to be able to buy like the good old
AY-3-8910 and that type of thing.

Has anyone done anything like this with up to date technology?

-- 
Tim Mitchell

Re: [AVR-Chat] Making music with AVR???

2009-05-19 by Richard Austin

AY-3-8910, I remember those. Came across an old board I made up with
four of those on, play Mozart musical dice.

Regarding chips, Atmel do some. Midi ones. Chuck midi at it and out
comes stereo. There are loads of midi files around, so should be just a
case of sending the file to the device. Probably a bit more difficult
than that though!


Tim Mitchell wrote:

Show quoted textHide quoted text

> I've been asked to make a device which will produce sounds, notes and
> music. This is an add on to a unit controlled by a mega128.
> We've previously made something for this customer which plays back WAV
> samples off a compact flash card, but this time they would like
> something more synthesised. We have also made a simple synth using a
> mega8 generating a wave using PWM from a wavetable, but it's very basic
> and sounds it.
> 
> Mobile phones do this sort of thing routinely these days, but you can't
> get the "synth" chips you used to be able to buy like the good old
> AY-3-8910 and that type of thing.
> 
> Has anyone done anything like this with up to date technology?
>

RE: [AVR-Chat] Making music with AVR???

2009-05-19 by Julian Higginson

I seem to remember there is an avr synth project out there somewhere.
It implements a basic subtractive synth in firmware...

I think it's just a monosynth though.

Aaaah - here you go:
http://www.elby-designs.com/avrsynth/avrsyn-about.htm


I don't know how you'd go with polyphony, or more of a sample based
instrument.
You'll probably be better off with an ARM, or something....



Julian

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-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Tim Mitchell
Sent: Wednesday, 20 May 2009 12:16 AM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] Making music with AVR???

I've been asked to make a device which will produce sounds, notes and
music. This is an add on to a unit controlled by a mega128.
We've previously made something for this customer which plays back WAV
samples off a compact flash card, but this time they would like
something more synthesised. We have also made a simple synth using a
mega8 generating a wave using PWM from a wavetable, but it's very basic
and sounds it.

Mobile phones do this sort of thing routinely these days, but you can't
get the "synth" chips you used to be able to buy like the good old
AY-3-8910 and that type of thing.

Has anyone done anything like this with up to date technology?

-- 
Tim Mitchell

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