Active Bluetooth headset marketnoise reduction at a price of about 20,000 rubles is developing rapidly. Bose may have been a pioneer in this segment, but many other audio producers have since entered the ring, including Apple with its AirPods Pro. Many are looking for an alternative for 7-10 thousand rubles, but if this is a model with active noise reduction and Bluetooth 5.0, the final price may be doubledmore. Nevertheless, high-quality and at the same time affordable headphones periodically appear on the market, simply because of the large number of manufacturers it is often difficult to “catch” them. But sometimes cool specimens are still found, including those with active noise reduction.
How active noise cancellation works in headphones
How do headphones work with activenoise reduction? Let us recall the lessons of physics - namely, the phenomenon of wave interference. A separate special case of this effect is the meeting of two waves that are inverse in phase. In this situation, as a result of the addition of waves, they will be completely suppressed. The same story is with sound: sound is also a wave, and to suppress noise, it is enough to make a sound in antiphase.
Of course, completely suppressing the noise will not work, howeverif with all this you still listen to music on headphones, you definitely won’t hear the surrounding sounds. In the headphones, a special microphone picks up loud sounds “outside”, the processor inverts them and adds them to the music being played, thus attenuating external noises.
Hybrid noise reduction
Usually, a separateprocessor, and a different signal is already processing the Bluetooth signal. However, due to the development of the processor industry, microcircuits have appeared that are able to support both functions on the same processor. These are the so-called “hybrid noise reduction” systems. While it is still developing, Qualcomm QCC5124 chip has become one of the pioneers, but it is already used in some headphones. For example, in the new Tronsmart Apollo Bold.
These headphones are equipped with hybrid technology.noise reduction (direct and feedback), which can suppress noise in a wide and narrow range to achieve the best effect. Unlike conventional models, which can only suppress noise up to 25-28 dB, Tronsmart Apollo Bold can achieve noise reduction up to 35 dB.
Characteristics Apollo Bold
- Bluetooth Version: 5.0
- Processor: Qualcomm QCC5124
- Audio Codecs: aptX, AAC, SBC
- Driver: 10 mm, dynamic
- Resistance: 32Ω ± 15%
- Frequency range: 20 Hz - 20,000 Hz
- Water proof: IP45
- Battery life: up to 10 hours (50% volume); up to 4 hours (100% volume)
- Operating time with a charging case: up to 30 hours
- Charging time: up to 2.5 hours
- Dimensions: 16.86 x 23.13 x 23.96 mm
- Weight: 7g
- Weight with Charging Case: 54 g
According to the characteristics, these headphones are almost not inferior to eminent competitors, which cost 2-3 times more expensive (for Apollo bold asking for only 9,000 rubles on Ali). But here is everything you need, including technology to ensure the simultaneous reception of a Bluetooth signal by the left and right headphones. Most TWS headphones, including AirPods Pro, use TrueWireless stereo technology, so the main earbud receives the signal first and then transfers it to another earbud, which causes a delay. In these headphones, the signal is transmitted immediately to two headphones - there are no delays and the transmission quality is higher. You can learn more about them and buy right now at the link below.
Buy hybrid noise canceling headphones
A few months ago, the manufacturer releasedother Onyx Ace TWS headphones that appeal to both reporters and visitors to the audio forums. But the wireless headphone market is growing and developing, so active noise cancellation is a new trend. According to a study by Tronsmart, for 36% of buyers, active noise cancellation is a key feature when choosing wireless headphones. Which headphones do you like more?