Old 12-08-2010, 04:08 AM   #1
TonE
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Default Chordino, cool chord recognition for free

Chordino is a Vamp-plugin for Sonic Visualiser and other Vamp-Hosts for chord recognition/estimation.

You can download it from:
http://isophonics.net/nnls-chroma

As we know we can also define Sonic Visualiser as one editor in Reaper.

Here is one example of output from a song of this forum:
Estimated chords for The Reckoning - Final.mp3, which you can find here, http://forum.cockos.com/showthread.php?t=68410 :

0.000000000 N
0.046439909 C
26.284988662 Fm
27.956825396 C
30.696780045 Caug
32.415056689 C
35.015691609 Fm
35.944489795 Abaug
36.594648526 C
39.381043083 Fm
40.960000000 C
43.746394557 Fm
45.650430839 C
48.111746031 Fm
50.015782312 C
52.477097505 Fm
54.334693877 C
56.610249433 Fm
57.306848072 C7
58.653605442 C
61.718639455 C7
68.870385487 C#6
69.892063492 C7
77.601088435 C#6
78.669206349 Cm7
86.192471655 Ab6
87.585668934 C7
95.016054421 E
95.480453514 C#6
96.084172335 C7
98.406167800 Cm7
112.245260770 Fm
114.242176870 Abaug
115.449614512 C
117.818049886 Caug
120.000725623 Cm
120.883083900 C
126.688072562 Fm
128.174149659 C
131.517823129 C7
137.787210884 Cm7
140.898684807 C7
147.307392290 Bbm7
148.421950113 C7
164.722358276 C#maj7
165.558276643 Fm7
166.487074829 C
174.660498866 Fm
175.775056689 C#m
176.239455782 C
179.118730158 Fm
179.768888888 C#6
180.419047619 C
183.391201814 Caug
185.016598639 C7
187.756553287 Fm
188.546031746 C
196.487256235 Fm
196.998095238 C
200.806167800 G
205.496598639 Ab
207.865034013 Dm7
209.908390022 G
214.273741496 Ab
216.502857142 C#maj7
218.406893424 G
222.911564625 Ab
225.280000000 C#maj7
226.626757369 F
227.601995464 G
231.642267573 Ab
233.917823129 C#maj7
237.122176870 Cm
240.001451247 Fm
243.809523809 C
248.546394557 Fm7
250.450430839 C
253.097505668 Fm
256.394739229 C
257.416417233 Fm
259.181133786 Cm
261.921088435 F
262.385487528 Abmaj7
264.846802721 C
266.286439909 Fm
268.190476190 C
270.605351473 Fm
272.555827664 C
279.428934240 Fm
280.497052154 C#m
281.007891156 C
284.769523809 C#6
285.141043083 C
288.159637188 Caug
289.645714285 C7
292.524988662 Fm
294.382585034 C
296.936780045 Fm
298.469297052 C
301.255691609 Fm
301.766530612 C7
302.323809523 C#m6
302.741768707 C
309.939954648 Fm
311.426031746 C7
314.305306122 Fm
315.652063492 C
318.670657596 Fm
320.017414965 C
323.036009070 Fm
323.500408163 C
327.401360544 Fm
327.912199546 C
331.720272108 Fm
333.020589569 C
336.132063492 Fm
336.642902494 C
342.355011337 N
342.355011337 N
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Old 12-08-2010, 04:41 AM   #2
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whoa, this is great stuff!

it really works.

thank you for this, wonderful tool.
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Old 12-08-2010, 05:34 AM   #3
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...
336.642902494 C
342.355011337 N
342.355011337 N

The last is CNN? Smells like conspiracy.
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Old 12-08-2010, 05:51 AM   #4
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So what this does actually? The frequencies in Herz of the used tones? I am confused...
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Old 12-08-2010, 05:53 AM   #5
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can it recognize the first chord of Hard Day's Night?

lol
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Old 12-08-2010, 05:54 AM   #6
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Quote:
Originally Posted by politcat View Post
can it recognize the first chord of Hard Day's Night?

lol
That's hard. Might take the whole night.
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Old 12-08-2010, 06:01 AM   #7
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Quote:
Originally Posted by adXok View Post
So what this does actually? The frequencies in Herz of the used tones? I am confused...
Check this Youtube video:
https://www.youtube.com/watch?v=RiQ-D4e0WrY&hd=1%22
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Old 12-08-2010, 08:08 AM   #8
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Quote:
Originally Posted by stupeT View Post
That's hard. Might take the whole night.
lol


...................
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Old 12-08-2010, 08:42 AM   #9
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Thanks for this. This is super useful.
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Old 12-08-2010, 08:45 AM   #10
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Just tried.

Got a few chords missed from random test songs but still quite impressive overall.

Thanks for posting this.
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Old 12-08-2010, 08:47 AM   #11
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AWESOME!!!!!!
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Old 12-08-2010, 02:11 PM   #12
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do you install like a normal vst?? thanks dave
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Old 12-12-2010, 11:00 AM   #13
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Quote:
Originally Posted by politcat View Post
can it recognize the first chord of Hard Day's Night?

lol
G7sus (at the 3rd fret)

I miss John
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Old 12-12-2010, 11:11 AM   #14
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Quote:
Originally Posted by pdk View Post
G7sus (at the 3rd fret)

I miss John
yeah, it's

335353 (top string down)

its not 000000 - where did that myth come from?

this is what chordino says:

Dm7...
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Old 12-12-2010, 11:54 AM   #15
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It's not that far out.

The notes in G7(sus4) or G11 at the third fret are (starting from the low note):
G D F C D G

The notes in Dm7 are
D F A C

So the only note error is an A instead of a G.

btw. I still haven't got this thing working with Sonic Visualiser. I put the dll at the following path, but Sonic Visualiser doesn't find it.

C:\Program Files\Vamp Plugins

Any clues as to how I get chordino working. I'm probably being a bit thick

Pete
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Old 12-12-2010, 11:55 AM   #16
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Quote:
Originally Posted by stratman View Post
It's not that far out.

The notes in G7(sus4) or G11 at the third fret are (starting from the low note):
G D F C D G

The notes in Dm7 are
D F A C

So the only note error is an A instead of a G.

btw. I still haven't got this thing working with Sonic Visualiser. I put the dll at the following path, but Sonic Visualiser doesn't find it.

C:\Program Files\Vamp Plugins

Any clues as to how I get chordino working. I'm probably being a bit thick

Pete
are you on a 64 bit OS?

put it in program files (x86)
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Old 12-12-2010, 12:25 PM   #17
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Quote:
Originally Posted by Jason Brian Merrill View Post
are you on a 64 bit OS?

put it in program files (x86)
32 bit OS.

Thanks, I've got it working. I needed to put the dll directly into C:\Program Files\Vamp Plugins and not into a subfolder.

Sonic Visualiser can see it now.

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Old 12-12-2010, 12:27 PM   #18
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Quote:
Originally Posted by fixerdave View Post
do you install like a normal vst?? thanks dave
It runs in Sonic Visualiser as far as I'm aware. See link below.

http://www.sonicvisualiser.org/

Pete
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Old 12-12-2010, 12:37 PM   #19
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you know, having vamp plugin support in reaper would be nice, we could have the plugins drop markers with chord names
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Old 07-01-2012, 05:49 AM   #20
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I just wanted to bump this thread for anyone searching for totally free chord recognition or identification software. Chordino is a VAMP plugin that works with Sonic Visualizer, which is a free-standing program that can be used as an external editor within Reaper if you wish. It was so easy to get it working, even *I* could do it. Here is a video that provides a complete explanation of how to get it working:

https://www.youtube.com/watch?v=ojtka...hannel&list=UL

I've tried it now on a few songs where I had band tracks recorded and I wanted to add a few tonal flourishes....and it figured out what chords they were playing better than I could!

Thanks to the creators of these great and very useful programs.
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Old 04-25-2018, 03:22 AM   #21
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A little tutorial on plugin usage:

- Sonic Visualiser: https://www.sonicvisualiser.org/download.html (it's a VAMP host, so it supports VAMP plugins)
- Chordino and NNLS Chroma: http://www.isophonics.net/nnls-chroma
- https://www.vamp-plugins.org/download.html page has other VAMP plugins and instructions at the bottom on where to put them
- run Sonic Visualiser, load an audio, Transform -> Analysis by Plugin Name -> Chordino -> Chord Estimate...

(check the bit-ness between plugins and host (x86 for x86; x64 for x64))



It also works in Audacity. I guess it catches the plugins from the common "Program Files\Vamp Plugins" folder (Windows).
The command is in the Analyze menu.



I also found CLAM-Chordata project which has multiple panels with different chords representation.
It's a little buggy and old, and open-source, but serves as an alternative.



---

Also there are more useful VAMP plugins for audio analysis on that download page.
Like Silvet Note Transcription that can be used to determine pitch distribution for example.
One of its commands is Pitch activation distribution which helps to determine pitches/notes usage in an audio segment.
It's a little havier/slowlier to analyze the data but gives good results.


Last edited by mortalis; 04-27-2018 at 01:46 PM.
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Old 04-25-2018, 04:58 AM   #22
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Quote:
Originally Posted by Jason Brian Merrill View Post
yeah, it's

335353 (top string down)

its not 000000 - where did that myth come from?

this is what chordino says:

Dm7...
That's a reasonable functional interpretation, just minus the bass note.

Sus chords can be thought of as a way of playing a plagal cadence (IV-I) and a perfect cadence (V-I) mashed together. IV/V-I. So far, so academically crusty, but bear with me...

That was the original idea in classical music, where the suspended tone would resolve (very churchy). More recently, we tend to leave the suspension hanging proud. Like Lennon does.

Alternatively, you're taking the elaborated cadences IV-V-I or ii-V-I (which are functionally just variants of each other) and sticking the first two chords in a blender. The ingredients for the blender are often notated as slash chords - F/G or Dm7/G (both strictly G9sus).

F/G is a perfectly clear and clean harmonic gesture, Dm7/G is fuller since it contains the 5th of G (as here). Both avoid using the 3rd of G, which is a problem tone in a sus chord because it can form an unpleasant minor 9th with the suspended 4th (or 11th if you like).

(Jazz takes things further by often adding a 13th - that would be FM7/G - and optionally altering the 9th and 13th for added "aren't I clever"-ness.

In fact, in jazz and some other styles, if there's a dedicated bass part and you're not it, when you see Gsus you'll often just play some kind of F or Dm7 and leave the root to Plucky Joe.)

I'm intrigued to find out how this plugin works - thanks for flagging it up OP.
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Old 04-25-2018, 05:20 AM   #23
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I want to try this, but I keep getting an error. I don't see anything anywhere to download Chordino. I'm seeing this nnls-chroma-win32-v1.1. I have extracted that rar file to windows/Program Files/Vamp plugins.
When I open sonic visualizer, I can drag an audio file in, get it to playback, but when I go to Transforms, I get this error. Layer generation failed. Failed to generate derived layer.What am I missing?
I'm running Win7, 64bit

It also says there are no transforms installed. Everything from the folder mentioned above is in the Vamp Plugins folder. Right?
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Old 04-25-2018, 05:39 AM   #24
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Quote:
Originally Posted by edkilp View Post
I want to try this, but I keep getting an error. I don't see anything anywhere to download Chordino. I'm seeing this nnls-chroma-win32-v1.1. I have extracted that rar file to windows/Program Files/Vamp plugins.
When I open sonic visualizer, I can drag an audio file in, get it to playback, but when I go to Transforms, I get this error. Layer generation failed. Failed to generate derived layer.What am I missing?
I'm running Win7, 64bit

It also says there are no transforms installed. Everything from the folder mentioned above is in the Vamp Plugins folder. Right?
For 64 bit systems you need to install to:
Program Files (x86)/Vamp Plugins
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Old 04-25-2018, 07:49 AM   #25
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It would be cool for reaper to support this
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Old 04-25-2018, 08:17 AM   #26
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Quote:
Originally Posted by Jason Lyon View Post
For 64 bit systems you need to install to:
Program Files (x86)/Vamp Plugins
Okay thank you very much for that. I'll give it a shot when I get home this afternoon
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Old 04-25-2018, 02:33 PM   #27
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Mine still says No Plugins Installed no matter where I put it. Program Files, x86, doesn't matter. Does it matter where Sonic Visualizer is installed? It goes to C:\Program Files\Sonic Visualizer by default. The Vamp Plugins folder is NOT created in the x86 folder. It is in the 64-bit Programs folder.
Then I unrar the nnls-chroma-win32-v1.1 to c:\Program Files (x86)\Vamp Plugins. (which I have to create, because it's not there otherwise)So what is it that I'm missing? Thanks! Gotta gig but I'll check back in a few hours!
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Old 04-25-2018, 03:58 PM   #28
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Quote:
Originally Posted by edkilp View Post
Mine still says No Plugins Installed no matter where I put it. Program Files, x86, doesn't matter. Does it matter where Sonic Visualizer is installed? It goes to C:\Program Files\Sonic Visualizer by default. The Vamp Plugins folder is NOT created in the x86 folder. It is in the 64-bit Programs folder.
Then I unrar the nnls-chroma-win32-v1.1 to c:\Program Files (x86)\Vamp Plugins. (which I have to create, because it's not there otherwise)So what is it that I'm missing? Thanks! Gotta gig but I'll check back in a few hours!
I just manually created a folder called "Vamp Plugins" (maybe it has to be case-exact?) in "Programs (x86)" and unpacked the files into that. NB - the compressed file nnls-chroma-win32-v1.1 contains a directory called the same thing. You need the actual base files that are in that folder in the "Vamp Plugins" root folder.

When you open "Vamp Plugins" the files you should see:
nnl-chroma.n3
nnl-chroma.dll
nnls-chroma.cat

(Plus some readme stuff).

It shows up fine in Sonic Visualiser installed to its default location, but in Audacity I had to enable it in "Analyse > Add/Remove Plugins".

Actually, I can see myself using it more as a quick reference in Audacity, rather than REAPER.

Initial testing gives very impressive results. Obviously, there's some occasional entertaining garbage displayed in between the real chords, but it's very usable indeed.
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Old 04-25-2018, 04:00 PM   #29
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could it be you have a 64 bit program calling a 32 bit dll?
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Old 04-25-2018, 04:31 PM   #30
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Quote:
Originally Posted by Jason Brian Merrill View Post
It would be cool for reaper to support this
It totally would. The vamp plugins are why I still use Audacity at all.
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Old 04-25-2018, 05:05 PM   #31
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Quote:
Originally Posted by jrk View Post
It totally would. The vamp plugins are why I still use Audacity at all.
Same here.
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Old 04-25-2018, 05:15 PM   #32
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C'mon guys, lay off. Nothing wrong with Audacity.
I often use it for quick jobs when I don't feel the need to get out the full toolkit. Oh, and tagging MP3s, cough cough...
And I do actually know a couple of people who use it to produce full multitrack stuff that sounds pretty good.
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Old 04-25-2018, 07:42 PM   #33
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Quote:
Originally Posted by Jason Lyon View Post
I just manually created a folder called "Vamp Plugins" (maybe it has to be case-exact?) in "Programs (x86)" and unpacked the files into that. NB - the compressed file nnls-chroma-win32-v1.1 contains a directory called the same thing. You need the actual base files that are in that folder in the "Vamp Plugins" root folder.

When you open "Vamp Plugins" the files you should see:
nnl-chroma.n3
nnl-chroma.dll
nnls-chroma.cat

(Plus some readme stuff).

It shows up fine in Sonic Visualiser installed to its default location, but in Audacity I had to enable it in "Analyse > Add/Remove Plugins".

Actually, I can see myself using it more as a quick reference in Audacity, rather than REAPER.

Initial testing gives very impressive results. Obviously, there's some occasional entertaining garbage displayed in between the real chords, but it's very usable indeed.
Thank you. I got it working now! Pretty cool so far.
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Old 04-26-2018, 03:24 AM   #34
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There's some interesting beat and tempo detection plugins in the Queen Mary package - you could maybe cobble together some automatic tempo mapping if you knew what you were doing...
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Old 04-26-2018, 06:11 AM   #35
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I'll have to look into Sonic Visualluzer and Chordino.
I would guess the ultimate test for chord recognition would be Steely Dan or maybe some of Chick Corea's stuff.
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Old 04-26-2018, 06:24 AM   #36
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It's not free, but HoRNet SongKey MK2 can detect and display the chords of a tune in real-time.

He has frequent sales, so you could probably get it for about $8.

https://www.hornetplugins.com/plugin...t-songkey-mk2/
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Old 04-26-2018, 06:39 AM   #37
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Quote:
Originally Posted by Philbo King View Post
I'll have to look into Sonic Visualluzer and Chordino.
I would guess the ultimate test for chord recognition would be Steely Dan or maybe some of Chick Corea's stuff.
Haven't put it to the jazz test yet - I've a feeling it's probably going to assume any tones higher than the 7th are melody. I suppose it might occasionally analyse rootless voicings as some kind of triad or 7th chord - eg it might call Dm9 Fmaj7 and F13#11 Ebaug.

Also, since a jazz bassline is more fluid, things could get interesting/messy.

Although perhaps its "library" could be expanded a bit to optionally include chords such as 7b9, 7alt, 7#11, susb9 (this last one critical for Chick stuff...)

Must dig into some of the research work the guy did sometime and try to get a rough idea of how his analysis algorithm works.

It is tweakable, but I'd want to understand the parameters before getting into that. Might be possible to create a jazz preset. There's mention of a chord.dict file but it doesn't seem to come with, so perhaps has to be created by the user.

I have tested it on a couple of tracks that have sound FX intros and outros - it sometimes seems to find consonant triads in traffic noise!

Last edited by Jason Lyon; 04-26-2018 at 06:44 AM.
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Old 04-26-2018, 12:40 PM   #38
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If you want to test with some cool jazz tunes:
https://archive.org/details/Free_20s_Jazz_Collection
here the download link: https://archive.org/compress/Free_20...,METADATA,JPEG
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Old 04-26-2018, 01:03 PM   #39
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Quote:
Originally Posted by TonE View Post
If you want to test with some cool jazz tunes:
https://archive.org/details/Free_20s_Jazz_Collection
here the download link: https://archive.org/compress/Free_20...,METADATA,JPEG
Nice historical collection, and I don't wish to be unkind but stuff from that era isn't exactly harmonically demanding. Although it would be interesting to see how chroma analysis would cope with florid polyphony over very faint banjo chording and virtually non-existent bass.

I'm thinking more on the lines of postbop stuff like Chick's Humpty Dumpty or Herbie's The Sorcerer. Both of which I know btw, but my interest is more in the testing.

Who knows - maybe we'll soon be at the stage of auto transcription. Then nobody will have to go through the headaches we older dudes had. And nobody will have very well trained ears either...!
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Old 04-08-2019, 09:34 AM   #40
Dwight Ivany
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Join Date: Mar 2015
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Default Thank you Jason

Thank you so much Jason: I have been reading and thinking about this for countless year trying to reconcile what I heard in modern music and jams, to what I could read in more classical info. You block of text, so wonderfully pulled together what for years felt so disparant in my head. Your post is one of the most valuable things I have read in recent memory.

Peace,
Dwight

[QUOTE=Jason Lyon;1982537]That's a reasonable functional interpretation...

Sus chords can be thought of as a way of playing a plagal cadence (IV-I) and a perfect cadence (V-I) mashed together. IV/V-I. So far, so academically crusty, but bear with me...
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