User Tools
deconstructing_sample-based_electronic_dance_music
====== Differences ====== This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
deconstructing_sample-based_electronic_dance_music [2015/10/25 10:37] hendrik |
deconstructing_sample-based_electronic_dance_music [2015/10/25 11:15] (current) jonathan |
||
|---|---|---|---|
| Line 2: | Line 2: | ||
| | **Authors **| Patricio López-Serrano, Hendrik Schreiber, Jonathan Driedger, Richard Vogl, Sebastian Böck| | | **Authors **| Patricio López-Serrano, Hendrik Schreiber, Jonathan Driedger, Richard Vogl, Sebastian Böck| | ||
| - | | **eMail** | [[patricio.lopez.serrano@audiolabs-erlangen.de]],[[jonathan.driedger@audiolabs-erlangen.de]],[[hs@tagtraum.com]]| | + | | **eMail** | [[patricio.lopez.serrano@audiolabs-erlangen.de]],[[jonathan.driedger@audiolabs-erlangen.de]],[[hs@tagtraum.com]],[[richard.vogl@jku.at]],[[sebastian.boeck@jku.at]]| |
| - | EDM (Electronic Dance Music) is often constructed from //samples// or //loops//, stacked on top of each other. A common pattern of EDM artists is to start a song with a single loop. While the song builds up, more and more loops are added. | + | EDM (Electronic Dance Music) is often constructed from //samples// or //loops//, stacked on top of each other. A common workflow of EDM producers is to start a song with a single loop. While the song builds up, more and more loops are added. |
| {{ :step1.jpg?nolink&400 |}} | {{ :step1.jpg?nolink&400 |}} | ||
| Line 12: | Line 12: | ||
| {{ :Moby_Porcelain_FullSong.mp3 |}} | {{ :Moby_Porcelain_FullSong.mp3 |}} | ||
| - | The goal of our hack was the following: Given an EDM song that was built up in the way described above, we want to **break it into all the separate loops that were used to create it**. To this end, we came up with an iterative strategy. | + | The goal of our hack was the following: Given an EDM song that was built in the way described above, we want to **break it into all the separate loops that were used to create it**. To this end, we came up with an iterative strategy. |
| ===== Step 1: Identifying Isolated Loops ===== | ===== Step 1: Identifying Isolated Loops ===== | ||
| Line 24: | Line 24: | ||
| {{ :Moby_Porcelain_Iteration1_Loop.mp3 |}} | {{ :Moby_Porcelain_Iteration1_Loop.mp3 |}} | ||
| - | We achieve this by first computing a //self-similarity matrix// (SSM) of a feature representation of the song and identifying a segment in the recording that is frequently repeated. To account for the fact that the repetitions of the sample are most probably superimposed with other loops, we experimented with feature representations and distance measures which take this circumstance into account. | + | We achieve this by first computing a //self-similarity matrix// (SSM) of a feature representation of the song and identifying a segment in the recording that is frequently repeated. To account for the fact that the repetitions of the sample are most probably superimposed with other loops, we experimented with different feature representations and distance measures. |
| Line 37: | Line 37: | ||
| ===== Step 3: Remove the Loop from the Song ===== | ===== Step 3: Remove the Loop from the Song ===== | ||
| - | Now, we remove the loop from the song at the identified time positions. This is done in the time-frequency domain where we subtract the spectrogram of the loop point-wise from the spectrogram of the full song (we subtract the magnitudes, capping at 0, and use the phase information of the original song). | + | Now, we remove the loop from the song at the identified time positions. This is done in the time-frequency domain, where we subtract the spectrogram of the loop point-wise from the spectrogram of the full song (we subtract the magnitudes, capping at 0, and use the phase information of the original song). |
| {{ :step4.jpg?nolink&400 |}} | {{ :step4.jpg?nolink&400 |}} | ||
| - | The //remainder//of the song—meaning the song without the loops—in our example sounds like this | + | The //remainder// of the song — meaning the song without the loops — in our example sounds like this |
| {{ :Moby_Porcelain_Iteration1_Remainder.mp3 |}} | {{ :Moby_Porcelain_Iteration1_Remainder.mp3 |}} | ||
| Line 48: | Line 48: | ||
| ===== Step 4: Iterate ===== | ===== Step 4: Iterate ===== | ||
| - | To remove the next loop, we start from the beginning again. | + | In the remainder of the song, we now hopefully have another loop that is occurring isolated. To remove this loop, we start from the beginning again. |
| {{ :step5.jpg?nolink&400 |}} | {{ :step5.jpg?nolink&400 |}} | ||
deconstructing_sample-based_electronic_dance_music.1445783867.txt.gz · Last modified: 2015/10/25 10:37 by hendrik
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 3.0 Unported
