The significant difference between active and passive noise reduction

With the rapid development of technology, Bluetooth headsets have become an indispensable audio device in modern life. Among them, the noise reduction function is a key element to improve user experience, and active noise reduction and passive noise reduction technologies have attracted much attention. Next, we will analyze the differences between these two noise reduction methods to help consumers better understand and choose the Bluetooth headset product that suits them.

In today's market, the noise reduction performance of Bluetooth headsets is one of the important indicators to measure their quality. Noise reduction technology is mainly divided into two categories: Active Noise Cancellation (ANC) and Passive Noise Isolation (PNI).

First of all, active noise reduction technology is a high-tech method that uses built-in microphones to capture noise in the external environment in real time, such as aircraft engines, subway running sounds and other low-frequency background noises. The noise reduction chip inside the headset will analyze these noise signals and generate a sound wave with opposite phases to offset it, thereby achieving the effect of reducing external noise. Active noise-canceling headphones are especially suitable for a quiet listening experience in noisy environments, but it should be noted that due to their working principle, they may cause ear pressure for some people.

Secondly, passive noise reduction achieves sound insulation effect through physical structure design. This technology relies on the airtightness of the headphones and the choice of earplugs or earmuff materials, such as soft memory foam earplugs or tightly wrapped over-the-ear earmuffs, which can effectively block mid- and high-frequency noise, such as human voices and keyboard typing. Sound etc. Passive noise reduction does not require additional power supply support, is relatively low-cost, and does not cause additional hearing pressure.

However, the noise reduction effect is limited by the physical structure and is not as comprehensive and efficient as the active noise reduction system.

To sum up, active noise reduction and passive noise reduction each have their own advantages. Consumers should make the appropriate choice based on their own needs and usage scenarios when purchasing. For users who are frequently in noisy environments and pursue the ultimate quiet experience, active noise-cancelling headphones are undoubtedly the ideal choice. For users with limited budgets or who pay more attention to comfort and general sound isolation, Bluetooth with passive noise-cancellation technology can be given priority. Headphone products.

Whether active or passive, the noise reduction technology of Bluetooth headsets is constantly improving and improving, providing users with better audio enjoyment. Understanding and mastering the characteristics of these two noise reduction methods will help us find the most suitable "quiet artifact" in the dazzling market.

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