Xiaomi’s wireless acoustics are not only popular at an affordable price, but also with complex technological solutions hidden inside the compact case. Many users are wondering how Xiaomi 3 headphones work, providing a stable signal and high-quality sound in urban jamming. Understanding internal processes helps to use the device’s functionality more efficiently and eliminate possible malfunctions faster.
The device is based on Bluetooth 5.2, which provides high-speed data transfer with minimal power consumption. Unlike previous versions, this protocol allows you to transmit audio stream simultaneously to both headphones, not just one of them, which eliminates the desynchronization of sound. Redmi Buds 3 use modern codecs to compress and decode audio, while preserving the detail of the tracks.
The key element of the system is the built-in DSP-It's a processor that processes the incoming signal in real time, and it's the chip that's responsible for the active noise reduction, the equalizer, the microphone algorithms, without the software processing, the sound would be flat, and the communication would be interrupted at the slightest distance from the smartphone.
Active noise reduction technology ANC
One of the main functions of the model is the ANC (Active Noise Cancellation) system, which allows you to reduce the level of external noise to 35 dB. The principle of operation is based on the physical phenomenon of wave interference: microphones on the outside of the body catch low-frequency hum (the noise of the engine, train, air conditioner), and the processor generates a counterphase.
When an external sound wave hits an artificially created anti-wave, they quench each other, and the user hears only music. It's important to understand that noise suppression is most effective in the low-frequency range, where the sound waves are longer and have a predictable structure. High frequencies, such as human speech or the ringing of dishes, the ANC system blocks worse, relying on passive sound insulation here.
Each earphone has two microphones inside it, one external to capture noise and one internal to monitor the sound quality inside the ear canal, and the adaptive noise reduction algorithm analyzes the difference between signals and instantly adjusts the antiphase if the noise pattern changes.
⚠️ Attention: In the on mode ANC In a completely quiet room, you can have an "ear pressure" effect, which is not a design defect, but a side effect of the system, which the vestibular apparatus gets used to. 10-15 minute.
Communication protocols and sound quality
The audio data transfer in Xiaomi Redmi Buds 3 is met by a set of codecs, among which AAC and basic SBC dominate. The AAC (Advanced Audio Coding) codec provides more efficient compression without a noticeable loss of quality compared to the standard SBC, which is critical for wireless transmission.
The way that data is transmitted is this: a smartphone compresses the audio stream, sends it over a radio channel, and headphones decode it in real time. Transfer speeds in AAC mode can reach 256 kbit / s and higher, which allows you to play music in high detail.
The stability of the connection is provided by the technology of TWS (True Wireless Stereo) new generation. whereas before one headphone was the main one and transmitted the signal to the second, in (third generation) there is a dual transmission scheme or improved synchronization, which reduces latency in games and video.
Why can the sound be interrupted?
Connection and interface
The initial setup of the device takes seconds thanks to the Google Fast Pair protocol and proprietary Xiaomi solutions. When you open the case, the headphones go into detection mode, sending a special advertising data package.
A smartphone with active Bluetooth scans the airwaves and, when it detects a compatible device, offers the user a pop-up with animations. This is not magic, but a standard encryption key exchange mechanism for quick authorization.
☑️ Pre-conjugation check
To reconnect, it is easy to remove the headphones from the case. Automatic reconnection to the last device used. If you need to switch to another gadget, you need to manually select the device in the list of available or turn off Bluetooth on the first device.
Control and sensors
The user is interacted with through capacitive sensors located on the headphone leg. Unlike mechanical buttons, it uses touch and retention technology, which allows for an expanded control menu.
The touch layer responds to a change in electrical capacity when you touch your finger. The software controller distinguishes between single touch, double, triple and long press, sending appropriate commands to the media player or assistant.
- 🎵 Single touch: Playback or pause of track, answer to incoming call.
- 📞 Double touch: Next track in the playlist or re-dialing the last number.
- 🔇 Triple touch: Previous track or voice assistant activation (depending on settings).
- 🌪️ Long press (2 seconds): Switching noise reduction modes (ANC / Transparency/Off).
Sensor sensitivity can be calibrated through the Xiaomi Earbuds app, which is especially useful if standard settings lead to random activation when the earphone is corrected in the ear.
Comparison of technical characteristics
To fully understand how headphones work, it’s worth considering their specifications against the basic requirements for wireless acoustics. Below is a table of key model parameters.
| Parameter | Value/ Characteristics | Impact on work |
|---|---|---|
| Bluetooth version | 5.2 | High stability, low energy consumption |
| Codecs. | SBC, AAC | High-quality sound on iOS and Android |
| Noise suppression | ANC to 35 dB | Effective blocking of traffic hum |
| Delay (Latency) | Low (Game Mode) | Synchronization of sound and pictures in games |
| Protection | IPX4 | Resistance to sweat and splash |
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To activate the game mode with minimal delay, you need to quickly press the touch zone of any of the headphones three times.
Energy consumption and charging
The autonomy of the work depends on the activity of Bluetooth modules and the noise reduction system. When the ANC is turned off, the headphones can last up to 7 hours, whereas the activation of the noise emitter reduces this time to about 5 hours due to the additional load on the processor.
The charging case has its own battery that can fully charge the headphones several times, using a standard Type-C port, which allows you to use a single cable to charge your smartphone and headset.
The Li-Ion battery protection system controls the temperature and current of the charge, preventing overheating. Indicators on the case signal the current level of charge: flashing red means low, green means full charge or charging process.
⚠️ Warning: Do not leave your headphones in the case on long-term charging after the indicator has gone out (charge 100%), and do not use chargers above 18W to avoid battery degradation.
Software configuration through Mi Home
To unlock the full potential of the device, you need to use the Xiaomi ecosystem. The application allows you not only to update the firmware, but also fine-tune the behavior of the headphones.
The app menu has a graphical equalizer that allows you to adjust the frequency balance, and you can assign actions for different types of touch, turn off automatic ear detection (when music is paused when you remove the earpiece), and find the device on the map.
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Regular firmware updates through the app are critical, as manufacturers often release patches that improve the stability of Bluetooth connections and microphone algorithms.
The process of updating is as follows: connect your headphones to your phone, open the application, go to the device settings and select Check Updates. During the process, the headphones should be in close proximity to the smartphone.