Song tempo analyzer?

Question

Programming

Very often you want to listen to music not by artist, album or genre, but by mood. I understand perfectly well that it will be… extremely difficult for the program to determine the mood of the song, but it may well determine the tempo and the characteristics of the pressure (I don’t know how to define it in other words).
Well, taking, for example, System of a down and some The Nlack Keys / The beatles, you can obviously track it somehow.
So, do you know such programs, or maybe they won’t be able to create at all, due to many reasons. Maybe someone even tried.

Answer 1

Erm... take a look at the following screenshot of the MixMeister Fusion program :

Tracks can be sorted by BPM and played with automatic beat-to-beat adjustment, but this may not be enough for mixing. And now pay attention to the keys of keys (fields KEY and KEYCODE) ... You can read about them here .
There are many more professional music mixing software out there, but MixMeister
is the best option for your question . As for the disadvantages: the program only supports MP3 and WAV. It does not support FLAC, which can be very annoying if you have a large collection in this format.

Answer 2

Tempo in music as a concept is the number of quarter notes played in one minute. From here, the durations of the sounding of the remaining notes are determined. Those. if you do it somehow semi-automatically, then I would indicate the exact section with one note, the duration of which is known in advance. Well, then it's a matter of technique - there is the duration of the note, there is the duration of its sound, we convert it into quarter notes ... But this is a purely musical-academic approach.

Answer 3

Just a couple of months ago, I sat with a friend and thought about how to do this. In fact, this is quite possible (you can find out the tempo, you can roughly find out the rhythmic pattern, you can find out the prevailing frequencies ... in a word, you can get enough parameters by which you can classify). True, we have not yet reached beyond thoughts, because there is a lot of work.
When we did a small research, we found works by some graduates on the classification of music by genre, but there is only a theory. There are also services that provide "similar music" but they are based on user data, although they give a good result.

Answer 4

There will be problems with music that does not have a distinct rhythmic pattern (or changes).

Answer 5

For Android, there is an implementation of sorting by rhythm - Mixtrax,