Logic Pro Tempo Raise: Match BPM Map to Recording

Updated 14 November 2026 · Standard formula, shown below

Logic Pro’s tempo features can either change the project’s tempo map to match a recording, or change the recording’s playback speed to match the project tempo. The key difference: Smart Tempo’s “Match” mode analyzes an audio region and adjusts the project tempo map to fit the recording, while Flex Time and “Follow” mode adjust the audio itself to fit the project tempo. If you want the project’s BPM to follow a live performance, use Smart Tempo’s Match mode; if you want the recording to snap to a fixed tempo, use Flex Time or the “Follow” mode.

Background: Why Tempo Matching Matters

Logic Pro is a digital audio workstation (DAW) used for music production, podcasting, and film scoring. When you record a live instrument or import an audio file that wasn’t recorded to a click track, the audio’s tempo may drift or be completely free. To use that recording alongside MIDI instruments, loops, or a metronome, you need to either adjust the project tempo to the recording or adjust the recording to the project tempo. Logic Pro’s Smart Tempo system, introduced in Logic Pro X 10.3, automates this process by analyzing the audio’s transient positions (the onset of each note or beat) and mapping them to a tempo grid.

How Smart Tempo Works

Smart Tempo analyzes an audio region and creates a tempo map—a series of BPM changes over time—that aligns the project’s beat grid with the audio’s transients. The analysis happens automatically when you import audio or record with the “Enable Smart Tempo” setting on. The result is a tempo map that can be edited in the Tempo Track (Global Tracks). The system can also detect the time signature and swing, though you may need to set these manually for complex passages.

There are two main modes:

Match: The project tempo map changes to fit the audio. This is ideal for live recordings with natural tempo variations.
Follow: The audio is time-stretched to fit the project tempo. This is ideal for aligning a recording to a fixed BPM (e.g., 120 BPM).

You can choose the mode per region in the Smart Tempo editor, or globally in Project Settings > Smart Tempo.

How to Match a Recording’s Tempo

To make Logic Pro’s tempo map follow a recording:

Import or record the audio region into the workspace.
Select the region, then open the Smart Tempo editor (double-click the region, or use the Smart Tempo button in the inspector).
Set the “Smart Tempo” pop-up to “Match” (or “Match and Follow” if you want both).
If the analysis isn’t accurate, adjust the “Transient” sensitivity slider or manually add/remove tempo changes in the Tempo Track.
Click “Apply” to commit the tempo map to the project.

After applying, the project’s BPM will change over time to match the recording. You can then add MIDI or other audio that will follow the same tempo map.

How to Make a Recording Follow a Fixed Tempo

If you want the recording to conform to a fixed BPM (e.g., 120 BPM), use the “Follow” mode:

Select the audio region and open the Smart Tempo editor.
Set “Smart Tempo” to “Follow”.
Set the “Project Tempo” to your desired BPM (e.g., 120).
Logic Pro will time-stretch the audio to match that tempo, using Flex Time algorithms.
Adjust the “Flex” algorithm (e.g., “Polyphonic” for music, “Monophonic” for vocals) to reduce artifacts.

This is useful for remixing, creating loops, or aligning a vocal take to a drum machine.

Common Problems and Fixes

Problem: The tempo map has unwanted jumps. This often happens when the transient detection picks up noise or ghost notes. Fix: Lower the transient sensitivity, or manually delete tempo points in the Tempo Track.

Problem: The audio sounds warbly or “chorused” after time-stretching. This is usually due to the wrong Flex algorithm. Fix: Try different algorithms—Polyphonic works for chords, Monophonic for single notes, and Rhythmic for percussive sounds.

Problem: Smart Tempo doesn’t detect the tempo at all. This can happen with very quiet or sparse audio. Fix: Increase the input gain, or manually tap the tempo using the “Tap Tempo” button in the transport.

Comparison: Match vs. Follow vs. Flex Time

Smart Tempo’s Match and Follow modes are built on Flex Time, but they differ in how they apply time-stretching:

Match: Changes the project tempo map to match the audio. No time-stretching is applied to the audio; it stays as recorded.
Follow: Time-stretches the audio to match a fixed project tempo. The audio is altered.
Flex Time: A manual tool that lets you drag individual transients to align them to the grid. It gives you full control but requires more manual work.

For a live band recording with natural tempo changes, “Match” is usually best. For a single vocal track that needs to be locked to a beat, “Follow” or manual Flex Time is better.

Tips for Accurate Tempo Mapping

Use a high-quality transient detector: Clean, well-recorded audio with clear attacks works best.
Set the time signature correctly before analyzing. If the song is in 3/4 but the project is in 4/4, the tempo map will be wrong.
After matching, check the tempo track for any extreme BPM jumps. Smooth them out with the pencil tool.
For polyphonic material (piano, guitar chords), use the “Polyphonic” Flex algorithm to avoid artifacts.
If the recording has a drum beat, use the “Rhythmic” algorithm for better transient preservation.

Frequently Asked Questions

Can I match a recording without changing the project tempo?

Yes, you can use “Flex Time” to manually quantize the audio to the existing project tempo. This will time-stretch the audio to fit the grid without changing the project BPM. Alternatively, you can set Smart Tempo to “Follow” and keep the project tempo fixed.

Why does my tempo map have random 0.5 BPM changes?

This is often due to transient detection errors. The system may interpret a slight delay as a tempo change. You can smooth the tempo track by selecting all tempo points and using “Smooth” in the Edit menu, or by manually deleting unnecessary points.

Does Smart Tempo work with polyphonic audio?

Yes, but with limitations. The transient detection can struggle with complex chords or sustained notes. It’s best to use the “Polyphonic” Flex algorithm and manually adjust tempo points if needed. For dense mixes, consider using a different DAW or manual tempo mapping.

Can I match multiple recordings at once?

Yes, you can select multiple regions and apply the same Smart Tempo setting. However, if the recordings have different tempos, you’ll need to match them one by one or use a common tempo reference like a click track.

Is there a way to save a tempo map for reuse?

Yes, you can save a tempo map as a MIDI file or as a project template. In the Tempo Track, you can export the tempo list as a MIDI file, which can be imported into other projects.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.