How to turn off noise cancellation on Xiaomi Redmi Note 8 Pro: all ways

The Xiaomi Redmi Note 8 Pro is a popular smartphone with powerful hardware, but its software processing sometimes leaves much to be desired. Many users face the problem when aggressive noise cancellation, distorting speech or completely eating out part of sound is activated during calls or recording voices, especially in noisy rooms, when using a headset or when connecting to Bluetooth devices.

In this article, we’ll look at all the possible ways to disable noise cancellation on the Redmi Note 8 Pro, from standard MIUI settings to hidden engineering menu options. It’s important to understand that the manufacturer includes this feature to improve communication quality, but in some scenarios it works against the user, such as when recording podcasts, streams or using a microphone in games (like PUBG Mobile or Free Fire).

Before you start making changes, consider that turning off noise cancellation can impair voice quality in noisy conditions. If you make frequent calls from the street or in traffic, it is better to test the settings in different scenarios.

Why noise reduction is a problem: typical problems

The noise reduction feature in the Redmi Note 8 Pro is implemented at the MIUI firmware level and works automatically when calling, recording videos or using a microphone in apps.

• 🔇 The voice is interrupted – the interlocutor hears you “snippetically”, as if you are talking, then silent.
• 🎤 Sound distortion – the voice becomes robotic or metallic, especially when using a Bluetooth headset.
• 📵 Turning off the microphone completely – in some applications (such as Discord or Zoom), the microphone can “muffle” your voice on the phone. 1-2 seconds.
• 🎧 Headset problems – when connecting wired or wireless headphones, noise reduction works too aggressively.

The reason lies in Qualcomm algorithms (the Helio G90T chipset in the Redmi Note 8 Pro uses cVc technology for noise cancellation), which are optimized for standard calls, but do not always work correctly with third applications. Unfortunately, in standard MIUI settings, there is no direct switch to disable this feature - you will have to use workarounds.

⚠️ Note: On some versions MIUI (especially global) engineering menus may be blocked. If nothing happens after entering the code, try alternative methods or update the firmware.

Method 1: Disabling noise reduction through the engineering menu

The most reliable method is the use of a hidden engineering menu (MTK Engineering Mode), which allows you to directly control the parameters of the microphone and the audio system.

1. Open the Phone app and enter the combination: ##36446337###
2. If the code didn’t work, try the alternative: ##4636## → Select Hardware testing → Audio.
3. In the engineering menu, go to the Hardware Testing → Audio → Mic Test tab.
4. Click on Type and select Mic1 (main microphone) or Mic2 (additional noise reduction).
5. Scroll down to the Noise Suppression option and set the Disable value.
6. Save the settings and restart the phone.

If the engineering menu doesn't open, your version of MIUI may be blocking access, in which case, try the following method.

Make a backup copy of important data

Battery charge of at least 50%

Disable VPNs and proxy (they can block access)

Write down the current sound settings for rollback-->

Method 2: Using USSD code to reset audio settings

If the engineering menu is not available, you can try to reset the audio system settings to the factory with the help of a special USSD-This method is less reliable, but it sometimes helps:

1. Open the Phone app.
2. Enter the code ##6484##
3. In the menu, select Audio Test.
4. Press Reset All (Reset All)
5. Confirm the action and restart the device.

This reset will bring back all audio settings to factory settings, including noise cancellation, but the effect may be temporary, as the MIUI update sometimes returns.

Method 3: Disabling audio processing in MIUI settings

Some versions of MIUI (especially MIUI 12.5+) have hidden audio processing controls to find:

1. Go to Settings. → The phone.
2. Tap 5-7 times on the MIUI version until the notification “You became a developer” appears.
3. Return to the main Settings menu and open Additional → for developers.
4. Find the option to disable audio effects and activate it.
5. Also check the item Turn off noise cancellation in calls (if any).

If these options are not available, your version of MIUI does not support them, and only the engineering menu or third-party apps will help.

Method 4: Using ADB to turn off noise reduction

If standard methods don’t work, you can try turning off audio processing via the Android Debug Bridge (ADB), which requires a computer and basic command line skills.

Instructions:

1. Install ADB and Fastboot Tools on PC.
2. Turn on USB Debugging on your phone (Settings → About Phone → Tap 7 times on MIUI → Return to Settings → For Developers → Turn on USB Debugging).
3. Connect your phone to your PC and enter in the command line: adb shell settings put global audio_effects_enabled 0
4. Reset the device.

If the team doesn’t work, try an alternative:

adb shell settings put global voice_processing_enabled 0

⚠️ Attention: Teams ADB They may conflict with system settings MIUI. If you have a sound problem after execution (for example, the sound in the speaker is lost), return the values to 1 and restart the phone.

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Before using ADB, check to see if your antivirus is blocking your connection to your device. Sometimes Windows Defender or Avast will prevent adb.exe from working.

Method 5: Third-party applications for sound management

If you don't want to go through the settings, you can use specialized applications that don't always give you 100% results, but sometimes they help you bypass the limitations of MIUI:

• 🔧 SoundAbout - allows you to reassign audio streams and disable audio processing for individual applications.link to Google Play.
• 🎛️ Audio Modification Library - requires root, but gives full control of audio drivers. XDA Developers.
• 🔇 Disable Audio Effects is a simple application to turn off the system's audio processing. It doesn't work on all devices.

Important: Apps like SoundAbout can conflict with MIUI and cause sound stuttering in games or videos. Back up your settings before using them.

What do you do if nothing helps?

If none of the methods worked, the problem may lie in:

• 🔄 Firmware – on some custom or beta versions MIUI Noise reduction is only disabled by editing system files (build.prop).
• 🛠️ Hardware malfunction – if the microphone is physically damaged, noise reduction algorithms may not work properly.
• 📱 Application conflict – some messengers (for example, Viber or WhatsApp) have their own audio processing settings.

In extreme cases, you can try:

1. Reset your phone to factory settings (don’t forget to make a backup!).
2. Install custom firmware (e.g. Pixel Experience or LineageOS) where noise cancellation is more flexible.
3. Contact Xiaomi Service Center – If the problem is hardware, you may need to change the microphone.

FAQ: Frequent questions about noise reduction on the Redmi Note 8 Pro

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The most reliable way to disable noise reduction is a combination of engineering menus and ADB-If the problem comes back after the update, consider installing custom firmware or using third-party audio management apps.