How to choose good sound quality Bluetooth wireless earbuds in 3 minutes?

The rise of Bluetooth tws wireless earbuds has enabled many manufacturers to see business opportunities. They have deployed the high, medium and low-end Bluetooth headset market, bringing more choices to consumers. But for Xiaobai, it seems that it is not very friendly. Many Xiaobai will easily jump when choosing a Bluetooth headset. If you don’t understand it, I will sort out an article for you today. How to choose a Bluetooth headset with good sound quality headset

The five most direct factors that determine the sound quality of a Bluetooth headset are the transmission process, and the other is the restoration of the sound quality. The following five points are summarized:

1. Bluetooth version

The Bluetooth transmission rate below 4.2 and 4.0 is not very high, and there will be problems such as interference and disconnection. After 5.0, this problem has been solved very well, and most of them are now beginning to adopt 5.0. Above version, if you still see Bluetooth 4.0, please choose carefully.

2. Encoding format

For the Bluetooth audio transmission protocol, the transmission efficiency of different protocols will be different, which will affect the sound quality to some extent. In fact, all encodings will have a certain loss of sound quality, but some are more and some are less.

At present, the more common codes are Aptx, AAC, and SBC. LDAC and LHDC (HWA) are not very common. When shopping, check which code your mobile phone supports, and then select it.

3. Sound Driver

The horn sound cavity design and the size of the sound unit. The sound cavity is an echo field. If the structure of the plastic shell mold is unreasonable, the sound quality performance will be poor. Theoretically speaking, the larger the sound unit is, the better. There are 6mm, 8mm and 10mm sound units commonly available on the market, as well as special sizes customized for different structures.

The other is the sound of the moving iron. The sensitivity of the moving iron is higher than that of the moving coil, because the structure of the moving iron unit is almost a closed container structure, which can be driven by a little current. Due to its high sensitivity, moving iron earphones are superior to moving iron earphones in terms of dynamic performance, instantaneous detail performance and sound density. The tone is cold and the resolution is high! The low-frequency volumetric performance is weaker than that of the dynamic coil of the same level. Due to the special structure of the moving iron unit, the direction of the sound pattern is basically determined.

4. Diaphragm material

The material of the diaphragm is also a very important part of determining the sound quality. There are many kinds of materials. The earphone diaphragm is divided into: pulp, polymer, composite, and metal. The diaphragm of middle and high-end earphone products often uses composite diaphragms. , That is, the so-called "biocomposite diaphragm", "titanium diaphragm" and "carbon nanotube diaphragm". This diaphragm will be designed and built with 1-2 materials, such as the part of the diaphragm that is responsible for the low frequency. It will use PET material, and the metal diaphragm is better for high-frequency transients and details.

5. Tuning

Tuning is the most test of experience and a long step in the entire headset development. This requires constant tuning by an experienced tuner to achieve the desired output effect. Different tuners have their own preferences and their tuning styles are also different. For example, the tuning style of Deep Sea Purcell is that the three frequencies are more balanced, the sound is primitive and rough, and the details are more complete. BOSE's sound quality is relatively pure, while Sony's tuning is more metallic, and so on. Simply put, the sound quality is closely related to the experience of the tuner. If there is too much tri-band distortion, it is not a good product. This needs to be heard and felt for yourself.