How to Fix Audio Echo in Streamlabs Desktop

Echo in Streamlabs Desktop usually means the same sound reaches your stream or recording through two paths, or your microphone is picking up sound it should not hear. The fix depends on which path is duplicated, so work out where the second copy comes from before changing settings.

Identify the symptom and environment

Start by describing exactly what repeats and who hears it. An echo on your voice, a doubled game or browser sound, and a call guest hearing themselves usually have different causes. Note your operating system, your Streamlabs Desktop version, and the microphone and headphones or speakers you use.

• Which sound repeats: your voice, desktop or game audio, or a call participant's voice.
• Where it is heard: only in the recording or stream, live in your own headphones, or by people on a call.
• Whether it started after adding a source, changing a device, installing audio software or switching scenes.
• Whether you use speakers or headphones while live.

Isolate where the fault occurs

The audio mixer in Streamlabs Desktop shows a meter for each active audio source. Play a sound or speak, then mute sources one at a time. If the echo disappears when one specific source is muted, that source is a duplicate or is capturing something it should not. If you speak in silence and the desktop audio meter moves, something is routing your microphone to your output device.

• Acoustic path: speakers play sound that your microphone picks up again.
• Operating system path: the system plays the microphone input back through your output device.
• Streamlabs path: the same input device or output device is captured by more than one source.
• Monitoring path: a source you monitor is played to a device that Streamlabs is also capturing.
• Hardware path: some USB microphones and audio interfaces have direct monitoring or loopback features that mix input into output.
• Call app path: a guest's voice is captured twice, or your stream mix is sent back into the call.

Try reversible fixes in order

1. Rule out speaker pickup

Switch to headphones, or turn speaker volume down, and test again. If the echo stops, the microphone was hearing your speakers. Noise suppression filters reduce background noise but are not a reliable cure for speaker bleed, so headphones are the more dependable fix.

2. Remove duplicate audio sources

Streamlabs Desktop has global audio devices configured in the audio section of Settings, typically a desktop audio device and a mic or auxiliary device. If a scene also contains a separate audio input or output capture source pointing at the same device, that sound is mixed twice. Set the duplicate global device to disabled, or remove the extra scene source, so each device is captured once. Also check whether a game, window or browser source is capturing audio from an application that your desktop audio already includes. Labels can vary between versions, so match the device names rather than relying on a specific menu wording.

3. Check audio monitoring

Open the advanced audio properties from the mixer and look at the monitoring option for each source. When a source is set to monitor and output, it is played to your monitoring device. If that device is also your captured desktop audio, the monitored sound is recorded again, slightly delayed. Set your microphone to monitor off unless you specifically need to hear yourself, and if you do need monitoring, route it to headphones that are not captured as desktop audio.

4. Turn off system playback of the microphone

On Windows, open the Sound control panel, go to the Recording tab, open your microphone's properties and check the Listen tab. If the option to listen to this device is enabled, clear it. Some microphones also offer enhancements in the same properties window; if your device lists them, disabling them temporarily is a reasonable test. On macOS, check whether any audio routing or virtual device software is sending your input to your output.

5. Check hardware monitoring and loopback

If your microphone or interface has a direct monitoring switch or a loopback feature in its own control software, try turning it off. With loopback enabled, the device may send playback audio into its input, so desktop sound appears in the microphone channel as well.

6. Separate call audio from your stream mix

If guests from a call app hear themselves, make sure their voices reach you through headphones and that the call app's microphone is your physical mic, not a virtual device carrying your full Streamlabs output. Capture the call audio once, either through desktop audio or through a dedicated source, not both.

7. Confirm sample rate settings

Compare the sample rate in the Streamlabs audio settings with the format your operating system uses for the same input device and output device. A mismatch is more often linked to crackling or drift than to echo, so treat it as a secondary check rather than the main fix.

Confirm the result

Make a short local recording while wearing headphones: speak, then play a short desktop sound. Listen back and check that each sound appears once. While recording, watch the mixer: speaking should move only the microphone meter, and desktop sound should move only the desktop audio meter. Keep your input level high enough to read clearly on the meter without staying at the top. If the original problem involved a call, ask a participant to confirm they no longer hear themselves.

If the problem remains

Write down which source, when muted, removed the echo, along with your Streamlabs Desktop version, operating system and audio devices. Test the same microphone in another recording app: if the echo appears there too, the cause lies outside Streamlabs, in system routing, device software or the room. An echo alone does not prove a faulty microphone or interface. Contact Streamlabs support with your notes if the echo appears only in Streamlabs, or contact the device maker if it follows the hardware across apps. Avoid factory resets, unknown driver downloads or disabling security software as troubleshooting steps.