Bluetooth TWS Earbuds Active Noise Reduction Test

luetooth (noise reduction) headset test In today's life, the application of Bluetooth headsets has become more and more extensive. People are no longer accustomed to often putting their mobile phones to their ears to answer calls. When working, driving, and exercising, they only need to wear a Bluetooth headset. Customers choose Bluetooth headsets, in addition to considering the comfort of wearing and ease of operation In addition, the most important thing is the sound quality, so the audio test needs of Bluetooth headsets will become more and more common.

Bluetooth headset test items

The audio test items of Bluetooth headsets include two categories: conventional electroacoustic test and advanced communication test. The specific contents are as follows:

In addition to the functions of traditional Bluetooth headsets, noise-canceling headphones have added a powerful active noise-canceling function. The active noise cancellation function is to generate a reverse sound wave equal to the external noise through the noise reduction system to neutralize the noise, thereby achieving the effect of noise reduction. Its principle is that all sounds are composed of a certain frequency spectrum. If such sound can be found that frequency spectrum is exactly the same as the noise to be eliminated, but the phase is just opposite, we could completely cancel the noise.

Let's compare the recording curve of the phone with and without the noise reduction function turned on in the noise environment, as shown in the figure. The picture shows the test under simulated car noise conditions. The green line is the frequency domain curve without the noise reduction function, and the red line is the frequency domain curve with the noise reduction function enabled. We can intuitively see the frequency range and intensity of the noise reduction.

Active noise reduction was mostly used on headphones, and now ANC technology has been extended to the most popular TWS true wireless headphones. It is more convenient for users to carry it daily, and the utilization rate is increased to promote the market share of this category. The sound quality and latency of Bluetooth headsets are weak points compared to the cord headsets. The release of active noise reduction not only enhances the functionality of true wireless, but also enriches the daily use scenarios. The most important thing is that active noise reduction wireless headphones and some new technological developments have gradually become people's living habits and are deeply loved by the consumers, they could enjoy the music whatever they are doing.

Speacking of this, our TWS earbud model: Air Pro the 3rd generation comes with excellent noise reduction function, you could contact your sales manager to get the further information.