Audacity multitrack recording software
Practical guide to multitrack recording in Audacity: interface setup, input selection, recording, monitoring, playback checks and fixes for common level or sync problems.
Before you start
Audacity multitrack recording runs locally on the computer where Audacity is installed. It records from devices that the operating system exposes to the application: built-in or USB microphones, audio interfaces, mixers or a virtual input. A new track is recorded each time you arm a separate track or add another take, so a multi-input interface is helpful but not mandatory for creating a multitrack project.
Before recording, confirm that the audio device is connected and selected as an input in the operating system. Close other applications that may use the same device. Use headphones if you plan to monitor while recording, because speaker output can leak into a nearby microphone. Keep the project sample rate consistent with the device settings when possible.
Step-by-step instructions
1. Select the audio host and devices
Open Audio Setup in the toolbar or use the Audio Settings section of Preferences. Choose the audio host that matches the operating system and device driver, then select the recording and playback devices. Keep the recording channels setting set to the number needed for the input; choosing stereo when a microphone is mono may still create a stereo track depending on the device and version.
2. Set the project rate and prepare the first track
Check the Project Rate setting before recording. Create a new track if none is present, then choose its input from the track control area. For a USB microphone or a single interface input, select the matching mono or stereo input. Audacity records one armed track at a time by default, so multiple microphones require an interface with enough inputs and a separate armed track per input where supported by the build.
3. Set a safe recording level
Use the track meter while speaking or playing at the loudest expected level. Adjust the recording slider or the physical gain on the interface so the meter stays below the clip indicator. Leave headroom rather than trying to use the full meter; clipping cannot be repaired after recording.
4. Start, stop and add more takes
Enable monitoring if needed, then click Record or use the default record shortcut. Audacity places audio at the cursor position. Stop with Stop, then move the cursor or open a new track for the next take. New recording creates new audio clips; if recording onto an existing track, the default behavior can produce overlapping clips depending on the recording preference.
5. Keep the session reversible
Work in an Audacity project rather than exporting after each take. Keep the original recordings on separate tracks until edits are final. Use non-destructive operations such as clip gain, effects preview or saved presets where available; destructive edits can be undone until the project is closed, but the undo history is not available after reopening.
Check the output
After recording, play back the section with headphones. Confirm that each intended track contains the expected signal, the waveform is visible and the level peaks remain below clipping. Check that silence appears only where expected and that no track captured only system audio or a blank signal.
For timing checks, select multiple starts or transients and compare their alignment. Audacity can display sync-lock tracks and a time ruler; use them to verify that tracks recorded in separate passes begin at the intended position. Export a short test file only when the project sounds correct, because export applies the current track mix, gain and any active effects.
Common problems and next steps
No signal or the wrong input is recorded
First check whether the correct device is selected in Audio Setup and in the track input selector. Test the device in the operating system sound settings while Audacity is closed. If the device disappeared after launch, stop transport and reopen Audio Setup before re-arming the track. On some systems the audio host must be changed to see an interface or virtual device.
Level is too quiet or distorted
Quiet recordings are best corrected at the source: raise interface gain or move closer to the microphone before increasing level in software. If distortion occurs before clipping is visible in Audacity, the overloading may happen in the microphone capsule, analog gain stage or operating system input. Reduce the first adjustable gain in that chain, not only the track volume.
Tracks drift or overdubs are late
A noticeable delay between monitoring and recording often comes from the output path or an effect chain. Use direct monitoring on an interface where available to hear the live input without the round trip through software. For overdubs, set the playback cursor to a marker or known transient, then align the new clip manually after recording if a timing offset remains.
Only one microphone is captured
Check whether the interface is set to the correct input channel pair and whether each track has a different channel selected. A single stereo input may place two microphones on the left and right of one stereo track rather than on separate tracks. For separate control, split or route channels to individual tracks only if the selected build and device expose that routing.
Next steps
When the multitrack take is stable, save the project, then make a backup copy or export stems if sharing or archiving. Use the exported mix for ordinary listening and keep the Audacity project for later edits. Adjust gain, pan and effects only after checking that the original tracks are clean and aligned.