Simple Arduino Music Box: Envelopes

RE: Simple Arduino Music Box: Envelopes

Jan Cumps — Fri, 01 Jun 2018 09:16:48 GMT

If you want to use the assembler instruction, here’s a series of tutorials to inline some instructions in the C++ code

https://ucexperiment.wordpress.com/2016/03/04/arduino-inline-assembly-tutorial-1/

RE: Simple Arduino Music Box: Envelopes

mcb1 — Thu, 31 May 2018 20:50:23 GMT

Well done.

I'd heard they can play music, but never really tried it.

Looks like I need to one day .. [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-4f5e7622-7aff-4e22-8369-9c69da1602ee/contentimage_5F00_3.png:16:16]

Mark

RE: Simple Arduino Music Box: Envelopes

gecoz — Thu, 31 May 2018 14:27:07 GMT

Hi Jon,

Great work! Listening to your Yankee Doodle brings back memories of the many hours (days) spent figuring out the best values for the Attack-Decay-Sustain-Release (ADSR) data, to be used to program the voices of the 6581 SID on my C-64 (a lifetime ago), to get the sounds needed for my sprites' animation! [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-4f5e7622-7aff-4e22-8369-9c69da1602ee/contentimage_5F00_1.png:16:16]

Compilers are pretty smart things, and most of the time they optimise the code the way we expect them to, like in your case for the signed 8-bit, unsigned 8-bit multiplication. But even when they have a mind of their own, you can still give them a "gentle nudge", by using the asm inline function inside your C code (as long as you are using a gcc-based compiler - with Arduino IDE you got this covered, as it uses avr-gcc), and write the right assembler code yourself.

Fabio

RE: Simple Arduino Music Box: Envelopes

shabaz — Thu, 31 May 2018 14:21:28 GMT

It sounds really good compared to some toys! I see what you mean about the faint noise, although it could easily be assumed to be mechanical or motor-related noise in a toy : )

Your work reminded me of this: Sound Synthesis and the Billion Dollar Paper

I had a fun time working on that, but I had it way easier with a BeagleBone Black, i.e. not memory/processor constrained. I don't know if it is possible, but if anyone can pull off FM synthesis on the Arduino it is probably you.

Awesome work on this Arduino project series : )

RE: Simple Arduino Music Box: Envelopes

genebren — Thu, 31 May 2018 14:05:34 GMT

Jon,

Nice update on your project. Electronic music is a very interesting field, as it can encompass so much math, electronics and physics. I have been interested in electronic music since I started in electronics. One of my first high projects was to build a music synthesizer, based on a 'Popular Electronics' article back in the early 70's. Your envelope experiments took me right back to those days. Thanks for the trip down memory lane.

Gene