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rapid evolution 2 questions

i am getting some weird keys that arent showing up on the camelot easymix system...

for instance, isnt A#m an A sharp minor? that doesnt show up on the camelot chart or the harmonic keys overlay chart..

also it seems like all the keys are minor

none of the keys are flat

i analyzed 17 tracks and got the following:

4x A#m - a sharp minor
4x Am - a minor
2x Cm - c minor
3x Dm - d minor
1 F#m - f sharp minor
1 Fm - f minor
1 G#m - g sharp minor
1 Gm - g minor

there are no flats or majors (so far)

another thing i dont understand is the key lock ~ can someone explain?

i was just planning on using this to find out keys of songs, nothing else...

the main thing that is bothering me is the fact that some of the keys arent showing up on the camelot sound easymix chart or the overlay chart.

am i reading the key notations correctly?

all the keys are on the camelot chart i used it myself i will try and find have a look for you.
Also 90% of edm tracks are minor keys so dont worry about it you will have very few tracks that are major

thers no flats because sharps and flats are the same thing.

so ur A# is also the same as Bflat. so i guess it chooses to do it in sharps rather than flats.

Indeed 'nutsan' is correct. (great name, btw XD)

X sharp corresponds to X+1 flat, eg. A# = Bb, C# = Db.

I suspect the reason why sharps are used in the program is that it's probably easier to determine if a note is sharp (half-step up) rather than flat (half-step down) from a letter pitch.

For example, loops in programming tend to go from the min up to the max (perhaps due to it being easier to add than subtract on a computer), and so if you were scanning the spectrum, it would be more intuitive to go from low to high in terms of frequencies to find a particular note.

Hope that sort of made sense.

Disclaimer: I very much dislike Fourier series and transforms. =P

quote:

Originally posted by nutsan thers no flats because sharps and flats are the same thing. so ur A# is also the same as Bflat. so i guess it chooses to do it in sharps rather than flats.

thanks

ok i kinda understand, so is this correct?

a sharp equals b flat
b sharp equals c flat
etc...
g sharp equals a flat

i have noticed that the f's on the camelot system are sharps? why arent they called g flats? everything else is in flats, why are the f's different?

My music theory is pretty rusty, and I had to dig around for this information.

Pitches that are the same but notated differently (A# = Bb, D# = Eb, etc.) are called 'enharmonic'. (I really forgot this term...)

I'm not entirely sure why F# is used rather than Gb, apart from F# being the first sharp, and Gb being somewhere in the middle (5th or so?).

Perhaps someone with a better knowledge of music theory can shed some light on this.

(It's kind of embarassing for me to not know this, actually, especially since I still play a musical instrument.)

love the software thanks guys did some sick mixes tonight! first time i ever tried harmonics and i'm still gettin used to the djm800 too so i'm havin fun...

Im going to take a crack at answering you question about enharmonics... I hope it right, if not someone please correct me.
I think its just written in alphabetical order and when written in chords/scales it is written in alphabetical order then by whatever is not being used already.

This is sort of off-topic but relates to RE2.

I got around to downloading and installing the latest version (2.5.something), and it's a vast improvement over the current stable, 2.3.something.

Regarding DJM-800, I suppose you could theoretically do harmonic mixes for every track- there is a function that does frequency shifting (pitch changing), so you could turn on master tempo (optional), beatmatch, then adjust to match keys. I'm sure there is a way you could calculate everything mathematically. Maybe I should look into that =P.

my RE broke. it said every track was in Bm lol

i just use the piano provided now. i also found that some of the time it was incorrect so i started using the piano at the same time to confirm anyway.

Hmm. I know it did that with my bpm (if there was something in the BPM field, it wouldn't actually change it when adding new tracks), but the key detection seems kind of strange.

I think the method used to determine key is to:
1. perform a FFT or similar spectrum analysis and to determine the most common frequencies (difficult due to harmonics).
2. take the quantitative data and calculate the probability of different keys (how it chooses between relative keys I'm not entirely certain)

Perhaps something is going wrong somewhere. Apart from the obvious reinstall, I'm not sure if there's anything else that would affect it.

i dropped my library into rapid evolution, put accuracy to 100% for each track. then i highlighted all of my tracks, right clicked, and ckicked detect key ~ so far so good for me. is that what you did?

i saw some weird bpms too, but when you analyze just ask it for the key

btw you can have RE2 show your key tags in camelot-key codes. its the first page in the option dialog

quote:

Originally posted by AnomalyConcept Regarding DJM-800, I suppose you could theoretically do harmonic mixes for every track- there is a function that does frequency shifting (pitch changing), so you could turn on master tempo (optional), beatmatch, then adjust to match keys. I'm sure there is a way you could calculate everything mathematically. Maybe I should look into that =P.

thats not how the 800 works. the 800 works by shifting the key of your track to the closest "real" note. you cant just pick and choose a key of your choice. basically you already need to know the keys of the tracks you are mixing for it to be of any use at all.

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