Record your changed voice and game audio separately in OBS
Capture the VoiceLala virtual microphone and game audio as separate sources, then assign them to separate recording tracks. Keep both on track 1 for a complete playback mix.
Start with two independent sources
This Windows guide is for creators who want to lower or mute changed commentary later without changing the game sound. Complete the VoiceLala OBS setup first, and connect headphones for the recording check.
OBS can store multiple audio tracks inside one video file. Separate tracks keep sources independently editable; they do not automatically create separate audio files. A track receives whatever its assigned source contains, so split the voice and game before they enter the same mix.
Capture the changed voice and game once each
- 01
In VoiceLala, select your physical microphone and an available voice. In OBS, add one Audio Input Capture source and explicitly select the virtual microphone installed by VoiceLala. Name the source Changed voice.
- 02
Add an Application Audio Capture source for the game and name it Game audio. Alternatively, use the audio-capture option on a supported Game Capture source. Choose one game-audio capture method.
- 03
Under Settings > Audio, disable global Mic/Aux capture of devices already captured in the scene. Disable global Desktop Audio when using application capture, so the same game sound is not recorded twice.
- 04
Speak with the game silent, then stop speaking and play a game sound. Check that the intended source meter responds each time. Keep the raw microphone out of this processed-voice recording setup.
OBS documents application audio capture for Windows 10 version 2004 or later and Windows 11. Some applications are incompatible; confirm that your game produces a signal before assigning tracks. Device names and source menus vary by version.
Use this OBS separate audio tracks map
Open Advanced Audio Properties from the Audio Mixer or the Edit menu. Assign the two sources using the map below. Track numbers are a suggested layout, so use the same numbers in Output settings and when checking the recording.
| Audio source | Track 1: complete mix | Track 2: voice | Track 3: game |
|---|---|---|---|
| Changed voice | On | On | Off |
| Game audio | On | Off | On |
Clear other track assignments you do not intend to use. Keep both sources unmuted for recording. This follows the OBS multi-track guide: one complete mix for straightforward playback, plus isolated tracks for editing.
Enable all three recording tracks
- 01
Open Settings > Output and switch Output Mode to Advanced. Open the Recording tab and use Standard recording output.
- 02
Choose MKV as the recording format. Enable audio tracks 1, 2, and 3, matching the source assignments above, then apply the settings.
- 03
If you also stream, select track 1 for the stream’s main audio in the Streaming tab. Recording-track selection and the stream’s main audio selection serve different destinations.
OBS recommends MKV and provides File > Remux Recordings when you need MP4 afterward. Remuxing changes the container; it does not separate sources already mixed together.
Verify isolation before a full session
Make a short local recording with three parts: say “voice check” while the game is silent, play a game sound while you stay quiet, then speak over the game. This is a test to run on your setup before a long session.
- Track 1: hear both parts, then the combined passage.
- Track 2: hear the changed speech, with the game-only part silent.
- Track 3: hear the game sound, with the voice-only part silent.
Use a player that lets you select audio tracks, or import the recording into an editor with multi-track audio support. Check all three tracks individually. During editing, mute the complete mix when using the isolated voice and game tracks, so the same audio does not play twice.
Diagnose missing or mixed audio
The player has game sound but no voice: select track 1, then check track 2. Ordinary playback usually selects one audio track. If track 2 is silent too, check the virtual microphone selection, source mute, source-to-track assignment, and the enabled recording tracks.
Both isolated tracks contain everything: inspect the sources before changing track checkboxes. A combined desktop or mixer feed remains combined when copied to another track. Remove duplicate capture and keep monitored speech out of the game-audio source.
The editor shows one track: confirm the file actually contains the enabled tracks, then check the editor’s import and channel-mapping options. Follow the OBS output guide if you need to remux the file for your editor.
Separate recording tracks questions
Will this also give me an unchanged microphone track?
This map records the processed VoiceLala input and the game. A processed microphone track does not also contain a separately editable raw voice. Recording a raw microphone would require another deliberately configured source and track; leave it out of the complete mix if you want only changed speech there.
Can I separate soundboard clips from speech this way?
Only sources that reach OBS separately can be assigned independently. If speech and effects already arrive together through one virtual microphone, track checkboxes cannot split them. This guide does not assume that VoiceLala provides a separate soundboard recording device.
Can I separate an old recording that has one mixed track?
This routing preserves separate sources during recording. Changing OBS settings afterward cannot recover isolated source tracks from a file that only contains the combined mix. Run the three-part check before recording the session you want to edit.
Keep your microphone route ready
For a missing virtual device, review virtual microphone setup. For duplicate capture or local monitoring, return to the OBS voice changer guide. Once each isolated track passes its check, save the setup for the next recording.
Give your next recording a changed voice
Download VoiceLala for Windows, connect the virtual microphone, and check each recording track before your session.