That probably means, they used a scalarencoder. But their problem was
different than mine. They had to remember the notes and to learn which
note came after which other note. For me the combination of melody and
chords have to sound "nice". Somehow a system has too learn or remember
that.
greetings: Jos Theelen
On 2015-10-09 17:19, Matthew Taylor wrote:
They actually didn't create a NoteEncoder (the codebase was much less
extensible 2.5 years ago). They wrote a preprocessing script that
turned the MIDI song file into a scalar input stream. I don't remember the
details, and their codebase is lost now. But I do remember that they
needed to remove the "rests" from the input.
---------
Matt Taylor
OS Community Flag-Bearer
Numenta
On Fri, Oct 9, 2015 at 3:15 AM, Jos Theelen <[email protected]> wrote:
Yes, I know it and looked at it. I wondered how they made a NoteEncoder, I
am still struggling with that. Nupic says that notes that are "close" to
each other should have the most overlapping bits. But what is "close" in
music?
1) a scalarencoder, where the number of the note is encoded. In this case
"close" means almost the same frequency.
2) 2 scalarencoders, one for the note and a different one for the octave.
This because a note sounds almost the same as that same note an octave lower
or an octave higher.
3) a typical noteencoder and a scalarencoder for the octave. The noteencoder
should take the notes in the following cyclical order:
C,G,D,A,E,.....Es,Bes,F,C, each a quint apart. In this case notes that are
close together sound better together. C-G sounds better together than C-Cis
Probably I should make all 3 encoders, just to test.
greetings: Jos Theelen
On 2015-10-08 15:14, Marek Otahal wrote:
Hi Jos,
On Thu, Oct 8, 2015 at 3:06 PM, Jos Theelen <[email protected]
<mailto:[email protected]>> wrote:
I am working on a model, that reads melodies and chords from
midifiles, mainly chorales from JS Bach. When the model is given a
new melody without chords, it should find the chords, that sound
correct, conform what it learned from the midifiles.
Nice, I love classical music and music related examples :)
You probably know, but just in case: check out nupic.audio project and a
former hackathon submission that composed song on trained MIDI music.
greetings: Jos Theelen
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