Nightcore Creator - https://nightcore.app

[enjikaka]

Hello!

I created a Nightcore Creator a few days back. It's live in the browser. (A modern browser is needed though, like Chrome).

You just simply open a music file from your computer and then you can listen to and change to speed of the music.

The app works offline too! (See if your browser supports it here: http://caniuse.com/#feat=serviceworkers )

Feedback is greatly appreciated!

Go to the app:
https://nightcore.app
(The old url: nightcore.rocks is not up anymore!)

[Tranceformer]

Um what means the number behind the change speed bar is this the percentage of the speed change this software does?

[emilemil1]

First off I want to say well done! I've been looking for a very beginner-friendly way to introduce people to Nightcore, and this looks like it could become just that, with some work ^^

Feedback:

That speed indication number doesn't really make any sense, can't wrap my head around it. It would be much more intuitive to display a percentage increase.

Additionally, if possible, it would be great to have an option to input the BPM of the track and either use that to adjust the speed to a specific BPM (very useful when making mixes) or to see what the BPM will be after speeding up using the standard method. Bonus points if in addition to entering the BPM manually, there's also an automatic analyzer or at least a way to tap along to the music to get the BPM.

Also your presets are a bit... fast. I don't know what Nightcore you listen to, but even the lowest Smurf option is crazy fast, at least for the songs I'm using.

A way to jump back and forth in the track would be nice, since sometimes you can have a really long track and want to hear what a part in the middle sounds like, or at the end.

Finally, a download button! Without that it's pretty pointless to have a tool like this :P

[Zurd]

Why at 52 does it slow the song? Seems like it's a 52% speed and why at 60 does is it normal? Me too I don't get the numbers.

Nice page though, pretty nice. Good job on doing it! Seems like you used p5.js for it :)
https://github.com/processing/p5.js-sound

[enjikaka]

Um what means the number behind the change speed bar is this the percentage of the speed change this software does?

That speed indication number doesn't really make any sense, can't wrap my head around it. It would be much more intuitive to display a percentage increase.

Why at 52 does it slow the song? Seems like it's a 52% speed and why at 60 does is it normal? Me too I don't get the numbers.

Sorry for the confusion! The numbers are midi numbers. It's based of C4 (midi number 60).

It would be great to have an option to input the BPM of the track and either use that to adjust the speed to a specific BPM (very useful when making mixes) or to see what the BPM will be after speeding up using the standard method. Bonus points if in addition to entering the BPM manually, there's also an automatic analyzer or at least a way to tap along to the music to get the BPM.

Also your presets are a bit... fast. I don't know what Nightcore you listen to, but even the lowest Smurf option is crazy fast, at least for the songs I'm using.

A way to jump back and forth in the track would be nice, since sometimes you can have a really long track and want to hear what a part in the middle sounds like, or at the end.

Finally, a download button! Without that it's pretty pointless to have a tool like this :P

Thanks for the suggestions! I'm trying to figure out a way to fix a download button. I too realised like right away that a download is a must! As for the BPM stuff; it might be tricky, but I'll try! :)

[Zurd]

What is midi numbers? Like 60 is equal to 0 and 52 is equal is minus 8 ?

[enjikaka]

What is midi numbers? Like 60 is equal to 0 and 52 is equal is minus 8 ?

Midi numbers are numbers that represent the keys on a keyboard. I based this project on a upcoming version of my HTML5 piano ( http://plypp.net ) which is going to use samples. Crazy as I am, I opened a MP3 song instead of a sample on the piano to try it out and realised it worked out quite nice.

Why I choosed midi numbers is because of the fact that the steps there will most likely make the speed increase sound better because the steps are locked to midi numbers instead of percent. It would probably sound terrible if you were to speed up a song to like 1 1/4 notes up etc.

And yes, 60 would be equal to 0, and 52 would equal minus 8. (8 tones down on a keyboard.)

[Tranceformer]

If i got this right the worth 1 is the Same as the Pitch Level one? Is this right?

[emilemil1]

Following notes only matters when you're tuning a specific instrument/sound to fit into a musical piece without being off-key, it doesn't matter when you're setting the speed of that entire piece :)

---

Midi numbers follow the semitones in the standard western 12-tone scale, where 12 half-tones is the difference between two octaves. In other words, +12 semitones equals twice the pitch. The formula for a particular number is as follows:

(twelfth root of 2) ^ (increase in midi number) = new speed

So if you take for example 64, which is 4 higher than the base of 60:

(twelfth root of 2) ^ 4 = 1.26

That is a 26% increase in speed.

[Zurd]

Not that I understand everything but I was able to calculate everything. You can see that it's almost a 6% speed change every time you step, its not accurate. You can't choose to speed a song by 14% since there's only 12% or 19%. Note that most Nightcore song fits between 10% and 25%, you don't really need anything else.

First column is from the webpage. Second column is the % speed change associated with it.

52 0.63
53 0.67
54 0.71
55 0.75
56 0.79
57 0.84
58 0.89
59 0.94
60 1.00
61 1.06
62 1.12
63 1.19
64 1.26
65 1.33
66 1.41
67 1.50
68 1.59
69 1.68
70 1.78
71 1.89
72 2.00
73 2.12
74 2.24
75 2.38
76 2.52
77 2.67
78 2.83
79 3.00
80 3.17

[HENTAiCORE]

midi number thing alone is quite useless, better also include more options like: pitch by bpm, pitch by frequency (maybe a bit unnecessary since everyone who knows how to use that probably also has a proper daw already), pitch by percent.
also pitching up by any amount wont change harmony or smth since harmony is about intervals and not about key tone heighth :^).

[enjikaka]

Thanks for the feedback!

I'll try to change the settings to control frequency with percent instead!

[enjikaka]

You can't choose to speed a song by 14% since there's only 12% or 19%. Note that most Nightcore song fits between 10% and 25%, you don't really need anything else.

pitch by percent.

Now uses percentage; http://dret.nu/nightcore-creator/

Do a hard refresh (CTRL + SHIFT + R) if you still see midi numbers.

[Zurd]

Wow that works so much better now!! Good job!

If there's ever a download button I might just use this from now on instead of a software, it's so much faster.

If anyone thinks this link should be sticky somewhere, lemme know, I'm open for suggestions!

[emilemil1]

Going above 25% is uncommon, but not totally unheard of, so I'd set the cap at 30% just to be safe. In some very, very special cases you may even go above 30%, but that's so ridiculously rare that it's pretty pointless to even support it.

I'm also questioning the purpose of the presets. Like, why would ever use them when you have the slider? Might be a good idea to keep them around though until more features are added, or the interface will appear very empty.

Aside from that, looking good as a basic editor!

[enjikaka]

Hey! Just wanted to let you know that I just moved the creator to it's own domain hosted on my own VPS with HTTPS. Yup, now you can nightcore your soungs without the government knowing ;)

The new place for the nightcore maker is here: https://nightcore.rocks/
The old one: dret.nu/nightcore-creator should redirect to https://nightcore.rocks but might fail!

[enjikaka]

Hey! I just created a board on userecho for you guys to request features and report bugs! Please tell me want you want to have on the site! :) https://nightcore.userecho.com/

[Zurd]

Moved to Nightcore General as a sticky thread!

[rsslayersr]

This at least is quite interesting.

Maybe so interesting that I might start experimenting myself.

[enjikaka]

Hello everyone! Just updated the nigthcore creator so now you can slide the speed/range/pitch slider live when the audio is playing. Downloading a nigthcore'd song is in the works! :D

Also, you can follow along on the tasks I am working on here: https://trello.com/b/UXH2QTyp/nightcore-creator

[enjikaka]

Hi again. Added a service worker to the nightcore maker. That means you can use the app when you do not have internet, in the browser. There's one catch though; you must have visited the site once before in a supported browser for it to work. You can see the service worker support here http://caniuse.com/#feat=serviceworkers , green ones are supported.

So if you are on the latest Chrome/Firefox/Opera and visit the app today, you can unplug your internet, and still use the app! :D

[Mayn_Playz]

Woah, never really thought I would find the creator of "Nightcore Creator" here. I have been using it for years now xD and it's pretty good. I understand the numbers and works offline too. It's good u3u. Keep up the good work

[enjikaka]

Forgot to say here but the nightcore.rocks has been changed to https://nightcore.app. Updated the first post :)