How to eliminate the synchronous sound in headphones Xiaomi: the complete guide

Wireless speakers often face the unpleasant situation of the audio track lagging behind the video or the left and right channels starting to sound out of sync. In the case of the Xiaomi and Redmi ecosystem, this problem can arise from software failures, interference in the Bluetooth channel or codec features. Rassynchronization makes watching movies impossible, and the game of shooters turns into chaos, where shots are heard later than the flash on the screen.

Fortunately, most of the time, the problem is software-based and can be solved without going to the service center. Current data protocols allow you to adjust for delays, but sometimes you need to manually reset or reconnect your devices. In this article, we will look at all the available methods to restore the normal operation of the headset, from simple reboots to deep tuning of Android system parameters.

Diagnosis and the main causes of desynchronization

Before you start taking action, you need to understand the nature of the delay. Most often, the culprit is the SBC data protocol, which is used by default for maximum compatibility, but has high latency. More advanced codecs such as AAC, aptX or LDAC provide less latency, but not all smartphone and headphone models support them simultaneously.

A crowded Bluetooth clipboard, heavy applications, or the physical distance of the device from the source of the signal can cause breaks and out-of-synchrony. If you use Mi True Wireless Earbuds or Redmi Buds models, it is important to check whether the firmware has been updated, as new versions of the software sometimes contain errors.

Special attention should be paid to the type of content. When watching videos on YouTube or Netflix, the delay is often taken over by the player itself, compensating for the out-of-synchron software. However, in games or using third-party video players, this compensation may not be available, and you will hear a clear echo or lag. Understanding where the problem is occurring, whether it is in the system or in a particular application, will help you choose the right method of solving.

⚠️ Note: If the out-of-sync is only observed in one application (for example, only in TikTok or only in the game), the problem may not be in the headphones, but in the optimization of the application for your version of Android.

Diagnostics should start by checking the connection to other devices, and if another smartphone or tablet is playing the sound synchronously, then it is the settings of your main gadget, and if the problem persists everywhere, you probably need to reset the settings of the headphones themselves or flash them.

Basic reconnection and discharge methods

The most effective way to eliminate the software glitch is to completely break the connection and create a new pair. Often, the smartphone has erroneous profile configurations that prevent the correct synchronization of channels.

Go to Settings → Bluetooth, find your headphones (like Xiaomi Earbuds Basic 2) in the list, and click on the gear icon or arrow. Select the option to "Forget the device" or "Unpair the pairing." Then turn off Bluetooth on your phone, wait 10 seconds and turn it on again. This will clear the cache of connections.

Now you need to put the headphones in pairing mode. For most Redmi and Mi models, you need to remove both earphones from the case and pinch the touch pads on both devices simultaneously for 5-7 seconds until the indicators flash. It is important that both earphones sync with each other before connecting to the phone.

After reconnecting, check the sound. If the dissynchron is left, perhaps one of the headphones is behind the second (problem) TWS-In this case, the Hard Reset procedure described in the instructions for your particular model, which often involves pressing buttons 5 times in a row or holding for 20 seconds, will help.

Configure Developer Options and Codecs

For advanced Android users, there's a hidden section called "Developers" where you can force the Bluetooth codec to change, which is one of the most effective ways to reduce the latency of sound. To activate this section, go to Settings. → About the phone and quickly press 7 times on the field "Version" MIUI» or “Assembly number».

Once you activate the developer menu, go back to the main settings menu, select "Advanced" or "Advanced Settings", then "Developers" and find the Bluetooth-related section, and you're interested in Bluetooth Audio Codec and Bluetooth Audio Sample Rate options.

Try switching the codec to aptX or aptX Low Latency if your headphones support this technology, which often solves the problem of unsynchronous games. However, if the sound is gone after switching, return the setting to System by default or SBC.

Also on the developer menu is the Disable Absolute Volume option, experiment with turning it on and off, and sometimes the out-of-synchrone is caused by a volume control conflict between Android and the built-in DAC.

Use of third-party applications for correction

If the system settings don't work, specialized apps from the Google Play Store come to the rescue, allowing you to artificially delay an audio track or video stream to adjust them to each other, especially for older models like the Mi True Wireless Earphones Basic.

One popular solution is the Lesser AudioSwitch or Bluetooth Connect app, which gives you access to deeper A2DP profile management. Once you install this app, you can force the profile to switch from Headset (headset, low quality, but less latency) to Headphones (headphones, high quality).

Another class of software is video players with manual audio tuning, like VLC for Android or MX Player, which has a feature called Synchronize Sound, and you can move the audio milliseconds forward or backwards right while you're watching it.

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To fine-tune the delay in the player, use the test video with a clapping in your hands. Move the synchronization slider until the sound of the clapping matches the visual action.

There are also equalizer apps like Poweramp Equalizer that have built-in Bluetooth processing modules. They can add buffering, which in some cases paradoxically stabilizes flow and removes jerks that lead to outsynchrone.

Specifics of settings for TVs and consoles Mi Box

Special attention should be paid to the situation when Xiaomi headphones are connected not to a smartphone, but to a Mi TV or Mi Box S. In the Android TV environment, audio delay via Bluetooth is a well-known problem associated with the features of video stream processing.

In your TV settings, go to Settings → Devices and Accessories → Bluetooth. Make sure the headphones are connected as a sound output device, not as a headset. Some versions of PatchWall firmware have a separate Sound section where you can select Headphones mode.

If you see a dissynchrone when watching IPTV or online cinemas, try changing the decoder settings in the player app itself. Often switching from hardware decoding to software or vice versa helps. It is also worth turning off any sound “improvers” such as Dolby Audio or DTS if they are included in the TV menu, as they add additional processing and latency.

⚠️ Warning: When connecting to the TV, the distance between the headphones and the console should be minimal (up to the end of the day). 3-4 Walls and furniture greatly weaken the signal, leading to buffering and out-of-synchronization.

For Mi Box S owners, it is recommended to check the Android TV version.Outdated versions may not work well with new Bluetooth protocols.System Update via Settings → About device → System update often brings Bluetooth driver fixes.

Update the firmware headphones through Mi Wear

Manufacturers regularly release updates that fix connection bugs. For Xiaomi and Redmi headphones, the main management tool is the Mi Wear app (formerly Xiaomi Earbuds) or Xiaomi Wear. Through it, you can update the internal firmware of the headset.

Download the official app from Google Play. Connect your headphones to your smartphone and open the app. If your model has an update, you'll see a notification on the home screen. It takes a few minutes, and the headphones should be next to your phone.

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Regular firmware updates via Mi Wear are the most reliable way to eliminate software errors that cause channel desynchronization and sound delay.

It is important to monitor battery power during the upgrade. If the headphones run out in the process, they can turn into a brick and stop connecting. Also make sure the Internet connection is stable, since the firmware file is downloaded from Xiaomi servers.

After updating the firmware, it is recommended to perform the “Forget the device” procedure again and connect the headphones again to reset old configuration files that may have remained in the phone’s memory.

Frequently Asked Questions (FAQ)