The implementation of TWS technology is based on the development of chip technology. Wired headphones can now break away from the line and become wireless headphones! Technically speaking, it refers to the mobile phone connecting to the main speaker, which then wirelessly connects to the slave speaker through Bluetooth, achieving true Bluetooth wireless separation of left and right channels. When the slave speaker is not connected, the main speaker returns to mono sound quality.

TWS technology has been widely applied in the field of Bluetooth headphones, and a new product, TWS Bluetooth headphones, has emerged. That is to say, the left and right earplugs of TWS earphones can work independently without cable connection.

Advantages of TWS

Compared to regular Bluetooth earphones, TWTrueWireless Bluetooth earphones have the following advantages:

A true wireless structure that completely eliminates wired worries and allows for more freedom of movement.

There are multiple ways to use it, which can be enjoyed separately, shared, or used as two machines.

TWS technology is also based on the development of Bluetooth chip technology. According to its working principle, it refers to the mobile phone being connected to the main headphone, which then quickly connects to the auxiliary headphone through wireless means, achieving true Bluetooth wireless separation of left and right channels. When the slave speaker is not connected, the main speaker returns to mono sound quality. TWS technology has been applied to the field of Bluetooth earphones, which has also given birth to a new product - TWS Bluetooth earphones.

What are TWS earphones?

TWS is the abbreviation for TrueWirelessStereo in English, which translates to true wireless stereo.

Based on the development of chip and Bluetooth technology, TWS earphones do not have traditional physical wires. The left and right earphones form a stereo system through Bluetooth, and the phone is connected to one receiving end. This receiving end will divide the stereo through wireless transmission to another receiving end, forming a stereo system.

The Development of TWS Earphones

In September of that year, Apple released the first generation of AirPods, ushering in the era of wireless headphones and ushering in unprecedented development opportunities for TWS headphones. From a market share perspective, Apple's TWS earphones are in a leading position. According to market research firm Counterpoint Research, in the third quarter of the year, Apple's market share in a single quarter accounted for 45%, significantly leading other manufacturers. Counterpoint forecasts also show that global TWS earphone shipments can reach 120 million units in the year, a year-on-year increase of%, and the estimated annual TWS earphone shipment rate can exceed 200 million units. After market iteration, the TWS earphone industry has gone from infancy to flowering, continued to develop in, and experienced a major outbreak in.

TWS headphone manufacturer

There are approximately four categories of manufacturers that have launched TWS earphones in the past year or two:

The first category is traditional audio manufacturers, represented by Sony;

The second category is mobile phone manufacturers, such as Apple, Huawei, Samsung, OPPO, etc;

The third category is some internet giants, such as Google, Microsoft, etc;

The fourth category is well-known digital accessory manufacturers, such as domestic UGREEN Green Link.

UGREEN, a well-known domestic digital accessory brand, has opened up new fields to meet the needs of users. A TWS earphone has already been sold in overseas markets, achieving good sales and reputation. This has laid a good foundation for the launch of the new TWS earphone series in the domestic market in the near future.

According to the news, Green Link is targeting the upcoming TWS Bluetooth earphones in the domestic market, which focus on high-quality sound quality and support Bluetooth version 5.0. At the same time, it also supports Type-c fast charging function and has advantages such as long battery life.

For our users, purchasing TWS earphones not only provides more choices, but also faces more complex choices. Next, we will share with you the key parameters that should be paid attention to when purchasing TWS earphones.

Audio decoding technology

The following is an introduction to the sound quality in descending order:

SBC: A typical audio format with average sound quality, and now 80% of them are in this format.

AAC: When Bluetooth supports AAC format files and the phone also supports AAC transmission, the sound quality is much better than SBC.

APTX: It is a patented encoding algorithm from CSR company, with the advantages of high-quality audio, low hardware complexity, and low equipment requirements. Only a single device can achieve 22.5kHz dual channel stereo.

APTX-LL: AptXLL focuses on low latency, with the main feature being the ability to achieve the following latency.

APTXHD: Focusing on high-definition audio, it improves the bit rate on the basis of traditional APTX and provides better overall audio quality transmission.

LDAC: is an audio codec developed by Sony and officially released at the CES exhibition in. It can transmit streaming music (also known as high-resolution audio) through Bluetooth, with speeds up to.

LHDC: is a high-definition Bluetooth transmission protocol independently developed by Huawei, which not only ensures the maximum resolution of wireless audio transmission, but also ensures high purity of sound quality.

Bluetooth version

The initial version of Bluetooth was 1.0 in, and version 2.1 was released in, greatly improving transmission speed. In 3.0, high-speed Bluetooth was introduced, and in, Bluetooth released version 4. X, which was faster.

In, Bluetooth version 5.0 was launched, with a speed increase of 2 times and a distance increase of 4 times compared to 4. X, making it more intelligent. It also combines advantages such as privacy protection and low power consumption.

noise reduction 

At present, the mainstream noise reduction technologies include ANC noise reduction, ENC noise reduction, DSP noise reduction, and CVC noise reduction.

ANC noise reduction adopts active noise reduction technology and hardware noise reduction. The principle is that the microphone collects external environmental noise, and then the system transforms it into an inverted sound wave and adds it to the speaker end, thereby achieving sensory noise reduction.

ENC is an environmental noise reduction technology that can effectively suppress 90% of reverse environmental noise, thereby reducing environmental noise up to more than and removing various interference noises in the environment.

DSP denoising mainly targets high and low frequency noise, and the denoising principle is similar to ANC denoising.

CVC is a noise reduction technology for call software, mainly aimed at the echoes generated during the call process.

IP index level

The TWS earphone IP index refers to the protection level of the earphones. An excellent TWS earphone has a waterproof level of at least IPX5 or above.