how to change drummer tempo without changing audio tempo?

on the audio tracks - uncheck the follow tempo checkbox in the inspector. This will cause tempo changes to not be reflected on those tracks.

I assume that with "Electronic Drummer" you mean the "Drum Machine Designer" and you recorded some MIDI Regions that play the drum part along with your Audio Regions.

You are right that the Drum Machine Designer doesn't have a "tempo x2" feature, because it doesn't know anything about tempo. It is basically a Sampler Instrument (Ultrabeat, to be specific) that just plays back MIDI Events (your MIDI Region). And there is the solution:

If you recorded a MIDI Region and want to play it back faster (time compress) or slower (time expand), you use the Trim Tool while holding down the option key. You will see a different Tool icon. Any length change now will keep all the MIDI Events in the Region (it does not truncate), instead, it stretches or compresses the MIDI Events, meaning, it plays them back faster or slower proportionally.

For example:

If you have a 4 bar MIDI Region of you drum groove, opt+drag the right border two bars to the left. Now, the Region is only two bars long, because the drum pattern (your MIDI Events) are played back twice as fast.

Hope that helps

Edgar Rothermich - LogicProGEM.com

(Author of the "Graphically Enhanced Manuals")

http://DingDingMusic.com/Manuals/

'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

Right-click the region, from the pop-up menu convert it to a MIDI region, stretch it, then convert back to Smart Drummer region.

What is a "Smart Drummer"? I want one too.

About the conversion process.

Converting a Drummer Region to a MIDI Region works well, because the output of the Drummer (the Drum Pattern Generator) creates MIDI Events that are transformed into a MIDI Region with those MIDI Events.

However, the reverse process is not really working. The Drummer Region is just a set of instructions based on parameters. The Drum Pattern Generator has no idea what to do with those individual MIDI Events, it doesn't understand "MID input".

Try it:

• Convert an 8-bar Drummer Region to a MIDI Region
• Time-Compress the 8-bars to 4-bar Region. Now it plays back double speed
• Convert the MIDI Region back to a Drummer Region and the result IS NOT double-speed, it is back to its original speed, just with different pattern (that the Drum Pattern Generator try to make sense out of with the MIDI Events input).

Hope that helps

Edgar Rothermich - LogicProGEM.com

(Author of the "Graphically Enhanced Manuals")

http://DingDingMusic.com/Manuals/

'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

If you change the main tempo, your audio will stay at the tempo it is, unless you have flex enabled on it. A second important thing to remember is that any audio region that does NOT start at 1 1 1 1 will shift its starting position if you alter the tempo; if you want to avoid that, you should SMPTE-lock those audio regions first: that will keep their starting point at a fixed time.

After rereading I understand that you want the drummer to play double time.

First SMPTE-lock all your audio files, then SMPTE-lock all MIDI regions and MIDI-events that have to remain at the old tempo, then double Logics' main tempo.

I can't find this 'Follow Tempo' checkbox in the Inspector Indyuser! can you be specific as to where it is exactly!?

Many thanks

The Follow Tempo checkbox is only present on audio files that have been recorded by Logic itself, in the current project. You must select the region to see it in the Region Inspector.

Ah yes, got it now, thanks Eriksimon. sorted!

Thanks again

In addition:

If you use the "Detect Tempo" command on an imported Audio Region or a BIP Audio Region, then the Follow Tempo checkbox will be added for those Regions.

Edit ➤ Tempo ➤ Detect Tempo of Selected Region...

Warning: The checkbox is called "Follow Tempo & Pitch", but if you use the Detect Tempo command, then only Follow Tempo will work and not Follow Pitch.

Hope that helps

Edgar Rothermich - LogicProGEM.com

(Author of the "Graphically Enhanced Manuals")

http://DingDingMusic.com/Manuals/

'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

IF the audio was not recorded in logic originally you can highlight the region and use this to get it to show up.

alter you select this and the region is analyzed - you should see the follow tempo & pitch checkbox in the inspector