Noise cancellation on Xiaomi: how to turn on and configure on your phone and headphones

Today’s Xiaomi devices are equipped with advanced noise reduction algorithms that significantly improve the sound quality during calls, video conferencing and listening to music. However, many users do not know how to activate this feature correctly or even do not know about its existence. In this article, we will discuss all the ways to enable noise reduction on smartphones and wireless headphones of the brand, from basic settings to hidden MIUI capabilities.

It is important to understand that noise reduction technologies on Xiaomi are divided into two types: hardware (implemented at the level of microphones and processors) and software (sound processing through MIUI algorithms). The first is found in flagship models (for example, Xiaomi 14 Ultra or Redmi K70 Pro), the second is available on almost all devices with current versions of firmware.

Types of noise cancellation on Xiaomi: what you can configure

Before you turn on the features, it is worth figuring out what technologies are available on your device. Xiaomi offers several types of noise cancellation:

• 🎤 Noise reduction microphone – filters foreign sounds during calls and voice recording (works in applications such as WhatsApp, Zoom, Telegram).
• 🎧 Active noise cancellation (ANC) — Available in headphones Xiaomi Buds 4 Pro, FlipBuds Pro and other models with support for the function.
• 📞 Voice Improvement – Optimizes the sound of the interlocutor during a conversation (found in smartphones on Qualcomm Snapdragon) 8 Gen 2/3).
• 🎵 Dynamic sound processing – adapts volume and frequencies to the surrounding environment (for example, in the Mi Music app).

Not all devices support full functionality. For example, Active Noise Canceling (ANC) is only available in premium headphones, and voice enhancement may not be available in budget models like the Redmi Note 12. To check compatibility, go to the audio settings — if there is an option, it will be displayed in the menu.

How to turn on the noise reduction microphone on the smartphone Xiaomi

This feature is useful for calls, streams and video conferencing, whether it's enabled through system settings or directly in apps. Let's look at both.

Method 1: Through the MIUI settings

The most universal method is activation via the phone menu, which is suitable for most models on MIUI 12-14:

1. Open the Settings. → Sound and vibration.
2. Scroll down and select Sound Improvement (or Sound Effects in older versions).
3. Activate the microphone noise reduction switch.
4. Adjust the filtering level if necessary (if available).

On some models (such as the POCO F5 or Xiaomi 13T), the option may be called Noise Filter or Clean Voice. If you don't find an item on the menu, upgrade to the latest version of the firmware - in older builds MIUI function may not be available.

Method 2: In applications for calls

Some messengers (such as Zoom or Microsoft Teams) have their own noise reduction algorithms that can run in parallel with the system ones.

• 📱 WhatsApp: during the call, tap the icon ⋯ → Sound settings → Noise suppression.
• 💻 At Zoom: Settings → Audio. → Additionally. → Background noise suppression.
• 🎮 In Discord: User settings → Voice and video → Noise suppression (mobile version required).

⚠️ Attention: If after activation of noise cancellation microphone begins to "cut" voice or artifacts appear, try to reduce the level of filtering in the settings or turn off the function in the application messenger.

Active noise cancellation (ANC) in Xiaomi headphones

Xiaomi headphones with ANC support (such as Buds 4 Pro, FlipBuds Pro or AirDots 3 Pro) are able to block external sounds by generating anti-phase signals, the function is enabled either through the Mi Earphones app or directly on the headphones themselves.

Configure via the Mi Earphones app

For full control of the ANC, use the official app:

1. Install Mi Earphones from Google Play or AppGallery.
2. Connect the headphones to the phone via Bluetooth.
3. Open the app and select your headphone model.
4. Go to the ANC (or Noise Reduction) tab.
5. Choose the noise level: Weak, Medium or Strong.

Some models (e.g. Buds 3T Pro) have Adaptive ANC, which automatically adjusts noise reduction depending on the environment, and activate the appropriate switch in the app.

Handling by gesture

If you do not want to use the application, ANC can be turned on directly on the headphones:

Note that in some models (for example, Redmi Buds 4 Active), the ANC can be simplified and work only in two modes: On and off.

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If the ANC suddenly stopped working, try resetting your headphones: press both touchpads for 10 seconds before the indicator flashes red.

Noise suppression during video calls and streams

When using Xiaomi for streaming or video conferencing (such as TikTok, YouTube or Google Meet), standard microphone noise reduction may not be enough, and in such cases, it is recommended to use specialized applications or external microphones.

Sound enhancement applications

If the built-in MIUI algorithms can’t handle background noise, try these tools:

• 🎙️ Krisp – Reduces real-time noise (works with Zoom, Discord, OBS).
• 📱 Wo Mic – allows you to use a smartphone as an external microphone for PC with improved sound processing.
• 🎧 NVIDIA Broadcast (for PC) – If you’re streaming from a Xiaomi laptop, this app is great at filtering noise.

For streamers on Xiaomi, a combination of an external microphone (such as the Xiaomi Mi USB Microphone) and software noise cancellation is especially useful, which gives a better result than using only the built-in microphone of a smartphone.

Setup at OBS Studio

If you stream from Xiaomi via OBS Studio, set up the sound filters:

1. Add a sound source (microphone).
2. Click on the gear next to the source and select Filters.
3. Add the Noise Reduction filter (recommended level: -30 dB).
4. Add the Noise Gate filter with a threshold of 15–20 dB.

⚠️ Attention: Excessive noise cancellation in OBS If you notice delays in your voice, reduce the filtering level or turn off the Noise Gate.

Noise reduction problems and their solution

Even when you set it right, noise cancellation can be incorrect, so let's look at the typical problems and how to fix them.

If the problem persists after all the manipulations, try resetting the sound settings to the factory.

1. Go to Settings → System and device → Resetting.
2. Select Resetting Sound Settings (not to be confused with a full reset!).
3. Confirm the action and restart the device.

Hidden Noise Reduction Functions in MIUI

In addition to standard settings, MIUI has hidden features for fine-tuning the sound, which can be activated through Developer Mode or special codes.

Enabling an improved ANC through ADB

Some models (such as the Xiaomi 13 Pro) have a hidden ultra-noise-cancellation mode that doesn’t appear in the regular menu.

1. Activate Developer Mode: Settings → About Phone → MIUI version (tap 7 times).
2. Return to Settings → Additional → For developers and enable USB debugging.
3. Connect your phone to your PC and execute the command: adb shell settings put global anc_enhanced_mode 1
4. Reset the device.

After that, the sound settings will add an additional Ultra ANC mode (if supported by your model), which can increase battery consumption by 5-10%, so use it only when necessary.

Codes for testing microphones

If you suspect that noise cancellation is not working due to hardware problems, check the microphones with engineering codes:

• 📞 Enter the dialer: ##3644633## - the main microphone test.
• 🎤 Enter ##36446337## - Additional microphone test (for noise reduction).

Speak to the microphone during the test – if the sound level indicator is not responding, a microphone module may need to be repaired or replaced.

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Hidden noise reduction functions may conflict with standard settings. ADB problems, reset the sound settings or execute the command adb shell settings put global anc_enhanced_mode 0

FAQ: Frequent questions about noise cancellation on Xiaomi