Chromatic Scale

Mon Nov 09, 2015 7:07 am

Is there anyone who is working on this challenge? I am trying but it seems that I am stuck.

This one only has 6 solvers, but there are 47 people who should have access to it.

Napoleon · Post by **Napoleon** » Sun May 01, 2016 7:30 pm

I'm taking a look now.

Napoleon · Post by **Napoleon** » Sat May 07, 2016 10:39 pm

Haven't solved it, but if anyone who has solved could tell me if i'm on the right track.
There are different chromatic scales for different instruments.
Find instrument.
Find errors.
Produce answer
Profit???

Sun May 08, 2016 7:32 am

Napoleon wrote:Haven't solved it, but if anyone who has solved could tell me if i'm on the right track.
There are different chromatic scales for different instruments.

What do you mean by instruments? The MIDI 1.0 format does not actually know specific instruments, if I am not mistaken. That is an extension which General MIDI brought about.

It might be that the file given here uses different MIDI channels, and that a part of the information is encoded there.

If you look at the chromatic scales here, you will notice that some of the notes are omitted. So I think that the information is either encoded in these missing notes, or in the given notes, or in a combination of the two.

Of course, I haven't solved it yet, so take that with a grain of salt...

Napoleon · Post by **Napoleon** » Mon May 09, 2016 12:14 pm

Well I was not talking about the file. I was talking about music theory. If you open the file in a MIDI editor, you see a few Chromatic scales. It could be that these are irrelevant, but as these chromatic scales all appear to have errors, I do not think so.

What do you think?

Tue May 10, 2016 12:44 am

Napoleon wrote:you see a few Chromatic scales. It could be that these are irrelevant, but as these chromatic scales all appear to have errors, I do not think so.

Precisely. At least a part of the solution has to be encoded there, I think.

I'll try out midicsv, maybe that can help here.

Napoleon · Post by **Napoleon** » Fri May 13, 2016 9:58 pm

Take a look at the middle of the Midi. Every note increases the offset by 240, but after offset 6480, there's a 480 offset gap. Could that be something useful?

michuber · Post by **michuber** » Fri May 27, 2016 7:37 pm

AMindForeverVoyaging wrote:I'll try out midicsv, maybe that can help here.

I'm afraid midicsv won't give you enough info, phpmidiparser would be a better choice.

TheBigBoss · Post by **TheBigBoss** » Sat May 28, 2016 5:51 am

Very comfortable: I can simply download the report from your uploaded file there.

But I doubt there's any hidden data in the file. Do all the reports really give more useful information than the sheet of music itself? I'll wait a few days whether your name appears on the solvers page.

Sat May 28, 2016 11:51 am

It is michuber's own challenge, so I guess they know pretty well how the solution is encoded here

@michuber:
Thanks for the hint.

Napoleon · Post by **Napoleon** » Mon May 30, 2016 3:38 pm

Did not even know there were two tracks xD also, there's so much data... I hope that single note has something to do with the answer.

TheBigBoss · Post by **TheBigBoss** » Mon May 30, 2016 7:14 pm

phpmidiparser shows the name of the notes, midicsv doesn't. So michuber just say you need the notes. But you can also get the notes from the sheet of music generated by MuseScore etc. I really don't see anything of interest besides the notes (and breaks) itself.

AMindForeverVoyaging wrote:It is michuber's own challenge, so I guess they know pretty well how the solution is encoded here

michuber · Post by **michuber** » Tue May 31, 2016 4:42 pm

TheBigBoss wrote:But you can also get the notes from the sheet of music generated by MuseScore etc. I really don't see anything of interest besides the notes (and breaks) itself.

So, what will a musician do with these notes and rests?

Tue May 31, 2016 7:39 pm

michuber wrote:So, what will a musician do with these notes and rests?

He/she will play them?

Napoleon · Post by **Napoleon** » Wed Jun 01, 2016 11:54 pm

hmm... I think a important clue would be, shall we search the file or the notes. If it is obvious, my fault..

Both the notes and the file look like it could be hiding something.