Mp3 To Note Block Code And See

Add Tip Ask Question Comment Download Step 6: Preview of Audio Heres a preview of the audio the arduino produces.

Translating the notes turned out, at least for me, very tedious.

After some digging around to see what others had already accomplished I only found Shvelos musicxmltoarduino project which was written in Ruby.

Mp3 To Note Block Code And See

I hadnt done much with Ruby and didnt know anything about musicxml (MXL) files so I decided to create my own windows app based on the Ruby code and see what MXL files were all about.

Add Tip Ask Question Comment Download Step 1: MXL Files The best source I found for MXL files is musescore.com with a huge collection user submitted sheet enhanced music.

An MXL file is a compressed xml file that contains voice, instrument, note and duration definitions.

I downloaded this version of the Stranger Things theme song by Riley Apperson.

Many formats of the music are available for download but MXL contains the information needed for the conversion to something an Arduino can play.

Image 2 above shows the contents start with PK which was an immediate give away that the file was compressed with PK Zip.

Image 3 is the same file uncompressed containing a standard XML format.

Add Tip Ask Question Comment Download Step 2: MXL File Data Theres a couple of things to look at in the data.

Remember we have to keep notes and the overall song simple because without something more powerful than an Arduino or some additional hacks we can only play one note at a time.

You may have to find a simple version of the song or pluck out which parts of each voice you want.

I took this information, parsed it out using a C and put it into arduino code to output music.

Add Tip Ask Question Comment Download Step 3: Arduino Code After parsing the data from the MXL file I then placed that into the arduino code.

Durations have to be played with to get the song to come out how you feel it should.

Each note is defined to a tone define NOTEB0 31 define NOTEC1 33 define NOTECS1 35 define NOTED1 37 Each note in the array is then looped through then played using the note definition shown above.

The app I wrote has a note limiter that can be changed to meet your needs.

Add Tip Ask Question Comment Download Step 4: C I wrote a small app in c to decompress the mxl, parse out the music data then output the arduino format to a textarea.

Note that the Arduino Uno has a file size limit so the amount of notes has to be shortened to meet that limit.

Add Tip Ask Question Comment Download Step 5: Arduino Wiring This is super simple.

I just used a piezo from a walkie talkie then connected Positive (red) to Pin 8 and Negative (black) to Ground.