Differences

This shows you the differences between two versions of the page.

--- reaper_tempo_mapping [2026/02/19 07:36] – created stephen
+++ reaper_tempo_mapping [2026/02/19 08:00] (current) – stephen
@@ Line 1: / Line 1: @@
 ====== Reaper: Tempo Mapping ======
-  - Project Settings (🛈 in toolbar).
+Snap to grid is Alt + S - you will need this often.
+===== Setup =====
+  - Project Settings (🛈 in toolbar or Alt + Enter).
   - [Project Settings] Timebase for items/envelopes/markers: Time
   - For each MIDI item (if any):
     - Right click > Source properties...
     - [MIDI item properties] Ignore project tempo: checked
+  - If there are multiple items, group them so the all move together.
   - Make sure the audio starts after bar 2.
   - View > Tempo envelope
   - Turn on Grid & Snap.
   - [Snap/Grid Settings] Show grid, line spacing: checked, 1, 1/2 or 1/4, depending on how accurate you want it.
-  - First one:
-    - Shift + click on bar line in Tempo envelope to create marker.
+===== Rough Match =====
-    - Ctrl + drag on tempo at top of marker and move it to beginning of transient.
-    - Alt + click to delete it.
+  - Find a section with 2 or 3 bars with good transients.
-    - Shift + click to create it again.
+  - Snap off, move the item so that the first transient aligns with any beat.
-  - The rest:
+  - Snap on, create a selection starting at the first transient.
-    - Shift + click on bar line in Tempo envelope to create marker.
+  - Snap off, adjust the end of the selection to beginning of a bar. Make sure you cover 2 or 3 bars and all the beats in them.
+  - Menu > Insert > Measure from time selection (new time signature)...
+  - [Edit Time Signature] Set bars, OK.
+  - This will create a tempo marker with the correct tempo. Double click it and copy the tempo.
+  - Double click the **very first** tempo marker and set its tempo. The media item will move.
+  - Alt + click to remove the other two tempo markers.
+  - Realign the media item. Make sure aligns with a bar and has the lead in bar as you want it.
+===== Fine Tune =====
+  - Shift + click on bar line in Tempo envelope to create marker.
     - Ctrl + drag on tempo at top of marker and move it to beginning of transient.
   - Adjust one marker without affecting everything to the right: