How to tune the sound in the smartphone Xiaomi Redmi Note 7: from basic parameters to hidden features

Xiaomi Redmi Note 7 remains one of the most popular budget smartphones even years after the release – thanks to balanced performance and flexible firmware. MIUI. However, many users face problems with sound: too quiet speaker, distorted bass or sudden loss of sound in the headphones. In this article, we will examine all the ways of adjusting audio, from standard volume sliders to hidden engineering menus and modifications to the system.

It is important to understand that the sound subsystem Redmi Note 7 is based on the chip Qualcomm Snapdragon 660 with support for Dirac technologies. HD Sound and AptX (for Bluetooth), which means that when set up correctly, the smartphone can produce sound comparable to the flagships of 2019-2020, but by default many of the features are disabled or hidden – they will have to be activated manually.

We'll look at this.

• 🔊 Basic volume settings and sound profiles
• 🎛️ Advanced equalizer and pre-preprescribing Dirac
• 🎧 Optimizing sound for headphones and Bluetooth devices
• 🔧 Solving typical problems (wheezing, cliffs, quiet sound)
• 🛠️ Hidden engineering menus and system modifications

If you’ve never gone beyond the volume slider, this article will open up new features for the Redmi Note 7, and if you’ve tried to tune the sound but have problems, you’ll find solutions here.

1. Basic sound settings: volume, profiles and notifications

So let's start with the obvious, volume control and system sound control. MIUI These are the settings that are spread across multiple menus, which is often confusing:

The main volume control is called by the buttons on the sidebar, but few people know that there are three independent sliders in the Redmi Note 7:

• 🔔 Call – the volume of incoming calls and alarm clock
• 🎵 Media – music, video, games (most important for most users)
• 📢 Notifications – sounds of messages, system alerts

To switch between them, tap the gear next to the slider or swipe down the notification panel and hold the volume icon.

If the sound is too quiet even at maximum, check the settings. → Sound and vibration → Additional settings → Hearing safety: The volume limiter can be activated here (function) EU Volume Limit, which blocks 85 dB. Turn off this setting if you want to use the full potential of speakers – but be aware of the risk to hearing!

You can also set up in this menu:

• 🔔 Vibration when calling (useful if you miss calls often)
• 🎶 The alarm clock tune – there are hidden system sounds that are not on the standard list
• 🔕 Do Not Disturb Mode with flexible rules (e.g., turn off the sound at night but leave the alarm clock)

⚠️ Note: If after the update MIUI system sounds (e.g., screen lock sound) are missing, reset the sound settings to standard in Settings → Sound and vibration → Resetting the audio settings, it'll bring all the parameters back to factory values without losing data.

Equator and sound effects: how to improve sound quality

Redmi Note 7 is equipped with a built-in 10-band equalizer and support for Dirac technology HD Sound, but by default, these features are disabled or hidden, and setting them can dramatically improve the sound - especially when listening to music through headphones.

To open the equaliser:

1. Open any audio app (such as Mi Music or YouTube Music).
2. During playback, click on the three dots in the upper right corner and select the Equalizer.
3. If there is no item, go to Settings → Sound and vibration → equalizer.

In the equalizer menu you will see:

• 🎚️ Predisprets are ready-made settings for different genres (Pop, Rock, Jazz, etc.). HD Optimized for headphones and gives the best spatial sound.
• 🔄 Manual tuning - you can manually adjust the frequencies from 60 Hz (bass) to 16 kHz (upper frequencies). For bass, raise the sliders 60-250 Hz, for brightness - 4-16 kHz.
• 🔊 3D-sound - imitation of surround sound (works only with headphones).

For the best result, we recommend:

1. Select the predispret Dirac HD.
2. Activate 3D-sound (if you listen through your headphones).
3. Manually raise basses by 3-5 dB and slightly reduce the average frequencies (500 Hz – 1 kHz) to remove the "dirty" in the vocals.

Select the predispret Dirac HD|Activate 3D-headphone|Get the bass on 60-120 Hz (+3 dB)|Reduce the average frequencies (500 Hz - 1 kHz -2 dB|Turn off "Hearing Safety" for maximum volume-->

If the equalizer does not save the settings after the reboot, this is a known error. MIUI 12-14. Decision:

1. Install a third-party player (such as Poweramp or Neutron Music Player).
2. Use their built-in equalizer - it works more stable than the system.

3. Sound tuning for headphones: from wired to Bluetooth

Redmi Note 7 supportive 24-bit audio output (through 3.5-mm connector) and codecs AptX/AAC But by default, the smartphone uses compressed sound, which degrades the quality:

For wired headphones:

• 🎧 Connect headphones with impedance 16-32 ohms (optimum for built-in amplifier).
• 🔊 Turn on the settings. → Sound and vibration → Sound quality → High resolution (24 bits / 192 kHz).
• 🎛️ In the equalizer, select the Dirac prediscret. HD Or manually adjust (see previous section).

For Bluetooth headphones:

• 🔗 Make sure your headphones support AptX or AAC (For example, Xiaomi AirDots Pro, Sony WH-1000XM3).
• 📱 Go to Settings. → Connected devices → Bluetooth settings → Select the quality of the sound and select the priority of the sound quality).
• 🔋 Keep in mind that AptX gives better sound, but puts the battery down faster.

If the sound in Bluetooth headphones is interrupted or wheezing:

1. Turn off Double Audio (if enabled) in Bluetooth settings.
2. Reduce the sound quality to SBC (standard codec).
3. Reconnect the headphones (forget the device and pair again).

💡

If your Bluetooth headphones support LDAC (Sony, for example, but it's not on the codec list -- install Developer Options Enabler from Play Market and activate developer mode. → System system → For developers, turn on Disable Bluetooth A2DP hardware offload and Enable LDAC codec

4. Solution to sound problems: wheezing, cliffs, quiet sound

Even after setting it up properly, Redmi Note 7 users may face typical problems, including the most common and ways to fix them:

If the Suddenly speaker is quieter after the update MIUI, Try resetting the sound settings:

1. Go to Settings. → Sound and vibration.
2. Click on the three dots in the top right corner and select Reset Settings.
3. Confirm the action.

This will return all settings to factory settings, but it won't delete your files.

⚠️ Attention: If after falling or getting moisture, the sound becomes muffled or distorted, do not try to disassemble the smartphone yourself. In the Redmi Note 7, the speaker is glued to the body, and if you sloppy dismantle, you can damage the plume".

5. Hidden settings: engineering menu and system modifications

For the high-end, risk-averse users, there are ways to get the Redmi Note 7 to make the most of the sound, which requires access to an engineering menu or root rights, but the result is worth it.

Method 1: Engineering menu (without root)

1. Open the phone app and enter the code: ##4636##
2. Go to the Hardware Testing → Audio tab.
3. Here you can test all audio channels (speaker, microphone, headphones) and change some parameters.

⚠️ Warning: Do not change the values in the engineering menu unless you are sure of their purpose! incorrect settings can lead to complete loss of sound.

Method 2: Modifications mixer_paths.xml (root)

• 🔧 This file is responsible for routing the sound in the system, and editing it allows you to increase the volume of the speaker and headphones.
• 📁 The file is on its way. /vendor/etc/mixer_paths.xml.
• 🔍 Look for lines with parameters RX1 Digital Volume and RX2 Digital Volume – can be increased (for example, from 84 to 90).

⚠️ Warning: Inappropriate values in mixer_paths.xml We recommend you to make a backup copy of the file first.

Method 3: Installation of a custom core

• 🔄 Cores like FrancoKernel or Perseus optimize the sound subsystem and add support. ViPER4Android.
• 📱 The installation requires an unlocked loader and TWRP.
• 🎛️ After installation of the core can be used ViPER4Android — powerful sound processor with support for surround effects and improved equalizer.

💡

Editing system files and installing custom cores requires experience. If you are a beginner, limit yourself to standard settings or third-party players (for example, Poweramp with ViPER module).

6. Sound optimization for specific scenarios

The sound settings should depend on how you use your smartphone, and here are recommendations for different scenarios:

🎮 For games:

• Turn it off. 3D-sound - it adds a delay.
• In the equalizer, raise the average frequencies (500Hz – 2kHz) for better audibility of voices and sound effects.
• Use wired headphones – Bluetooth latency can interfere with shooters.

🎵 For music:

• Activate Dirac. HD and 3D-sound (for headphones).
• In the player, select the bitrate of 320 kbps or higher.
• For bass, use headphones with impedance 32 ohms (for example, Xiaomi Hybrid Pro). HD).

🎥 For the video:

• On YouTube or Netflix, select High sound quality in the playback settings.
• If audio and video are not synchronized, turn off hardware acceleration in the application settings.
• For home theater, connect your smartphone to TV through HDMI-adapter (type C) → HDMI).

📞 For calls:

• Enable Voice Amplification in Settings → Sound and vibration → Improving voice.
• If the person is not audible, check the microphone for contamination (especially after prolonged use).
• For hands-free communication, use an external speaker or Bluetooth headset.

FAQ: Frequent questions about sound setting in Redmi Note 7