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Sagan Technology Metro • View topic - Creating Lead Generator Presets...

Creating Lead Generator Presets...

General Metro Questions and Answers should be asked and answered here

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Creating Lead Generator Presets...

Postby Lytz1 » Wed Sep 19, 2018 8:34 am

So I'd like to do some Lead Generator Presets on my own.

Some stuff is still a bit unclear to me, maybe you could share some light...

'Expand' tells the lead generator to expand this riff before adding it into the rhythm explorer track.

What exactly does that mean? Something like when I have only 1 beat of 3 notes that they get "copied" until a specific
length is reached?

Bends are gradual

Found no explanation of that one. No idea what that means.

Also:

- Is it better to use even bar timelenght? If so, which is the optimal length? (How many bars/beats for the pattern?)
- Are the results better if you do multiple short ones and keep them "fragmented" or Is it better to use fewer longer ones?
- And how long/how many notes are the limit? (Or let's say "until x it makes sense, more than x not so much?)
- What exactly are "Pattern Members"?

(In short: I need a simple starting point with as few possibilities of user error as possible
until I get the concept and build up from there.)


Thanks,
tL.
Lytz1
 
Posts: 152
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Re: Creating Lead Generator Presets...

Postby Jerm » Wed Sep 19, 2018 1:53 pm

Lytz1 wrote:
'Expand' tells the lead generator to expand this riff before adding it into the rhythm explorer track.

What exactly does that mean? Something like when I have only 1 beat of 3 notes that they get "copied" until a specific
length is reached?

There are a maximum of 64 steps in a pattern. If the 'expand' flag is set, the pattern will be expanded with a random number of copies. I believe this applies to patterns created using the presets algorithm only. So, for example, if you save a pattern with 4 notes in it and set the expand flag, the pattern may be created with up to 64/4 or 16 copies.

Lytz1 wrote:
Bends are gradual

Found no explanation of that one. No idea what that means.

Basically gradual bends holds the bend longer than non-gradual. To test stuff like this you can save a preset, noting its preset index number upon creation. You can then select that index for both the to and from preset range in the RE preferences dialog. Then it will use exclusively that preset when the preset algorithm is used.

Lytz1 wrote:- Is it better to use even bar timelenght? If so, which is the optimal length? (How many bars/beats for the pattern?)
- Are the results better if you do multiple short ones and keep them "fragmented" or Is it better to use fewer longer ones?
- And how long/how many notes are the limit? (Or let's say "until x it makes sense, more than x not so much?)
- What exactly are "Pattern Members"?

Your questions are quite good. I don't think using even bar length will matter much as the lead generator aligns to bars quite a lot internally. To me the best algorithm right now is the 'LUT" algorithm but the version posted at this point is quite old. The 'LUT' alg pieces together small fragments to create patterns. So stepping back... a pattern is made of 64 steps or members. They can all be notes but certain bends, including all bends in presets, will use at least one extra member for the destination note.
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Re: Creating Lead Generator Presets...

Postby Lytz1 » Wed Sep 19, 2018 8:17 pm

Ah, things are getting much clearer now.

Thanks a lot, that helps quite a bit.

Best,
tL.
Lytz1
 
Posts: 152
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Re: Creating Lead Generator Presets...

Postby Lytz1 » Tue Sep 25, 2018 11:08 am

Another question:

Does the lead generator create the scale on the fly when I have chord markers in the song?
It seems to generate an ad-hoc scale that is derived from the chord markers.

Interesting to me is that the lead generator obviously uses notes outside the chords
and somehow without "knowing" the scale (because there obviously is no "scale marker")
it still is musically on point most of the time. This is quite impressive.

Also: Does have the "Basic" Key signature any effect on the Lead Generator?


Thanks & best,
tL.


(By the way: Is there a possibility to add a "suggested/used Scale" info somewhere so that we can
know which scale the lead generator uses? Might help with further editing later on in the song...
Or maybe just a simple scale-finder that analyzes the chord markers and gives a best-guess result which scales at which key include all the notes from all chords in the markers.)
Lytz1
 
Posts: 152
Joined: Wed Jul 09, 2014 6:21 pm

Re: Creating Lead Generator Presets...

Postby Jerm » Tue Sep 25, 2018 11:48 am

Lytz1 wrote:Does the lead generator create the scale on the fly when I have chord markers in the song?
It seems to generate an ad-hoc scale that is derived from the chord markers.

In the lead generator preferences you can specify which scales, and optionally the weights of those scales, that lead generator (LG) will use. Those scales are called override scales. You may also specify an override scale within the marker edit dialog. LG does not create scales outside of those specified. If you do not specify any scales, it will try to figure out the best scales to use. In some cases LG may combine scales. Scale switching is another issue entirely.When is the best time to switch scales?

Note that if you right-click on a lead generator pattern in the Rhythm Explorer you can see information on scales and more for that pattern.

Lytz1 wrote:Also: Does have the "Basic" Key signature any effect on the Lead Generator?

No. Only perhaps for creating presets. When you create a preset be very cognizant of the key signature as specified in the add preset dialog. All it takes is one bad preset to ruin a good lead.

Lytz1 wrote:
(By the way: Is there a possibility to add a "suggested/used Scale" info somewhere so that we can
know which scale the lead generator uses? Might help with further editing later on in the song...
Or maybe just a simple scale-finder that analyzes the chord markers and gives a best-guess result which scales at which key include all the notes from all chords in the markers.)

See above.
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Jerm
 
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Re: Creating Lead Generator Presets...

Postby Lytz1 » Tue Sep 25, 2018 1:05 pm

Very good. Thanks again.

tL.
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