Nowadays, listening to audio from smartphones and laptops is rare to find devices with cables, but their role has been replaced by True Wireless Stereo (TWS).
The versatility of use and the features of True Wireless Stereo make this tool popular among many people for listening to audio, watching movies, playing games, and making phone calls.
This article will provide you with more information about True Wireless Stereo, including its definition, how it works, its components, functions, features, and the usage regulations.
What is a True Wireless Stereo?
True wireless stereo (TWS) is a wireless audio device that allows wireless use between the two earbuds and a primary device, such as a laptop or mobile phone. The TWS connects to the main device using Bluetooth technology that transmits sound directly to the earbuds.
The TWS was first released in 2015, its emergence supported by the periodic removal of 3.5mm audio ports from their devices. It has been loved ever since for its ability to freely listen to audio, take calls, or play games without annoying wires.
1. How does it work?
In general, True Wireless Stereo (TWS) works with Bluetooth technology that connects from a primary device, such as a smartphone or laptop. Here is how it works in detail:
- Bluetooth connection: Activate the Bluetooth connection of the primary source (phone or laptop) and connect to the TWS earbud device.
- Inter-earbud synchronization: The TWS uses a master-slave working system, the master connecting to the audio source device and acting as the main receiver, while the slave will then connect to the master earbud.
- Audio transmission: Audio from the main device as the audio source is sent to the master earbud and then forwarded to the slave earbud.
- Digital signal processing: To ensure good audio, the TWS uses digital signal processing (DSP) technology.
2. The main components
Here are some of the main components of True Wireless Stereo (TWS):
- Bluetooth chipset: Manages wireless connectivity.
- Speaker driver: Converts digital signals into sound.
- Internal battery: Generally sufficient for 3-6 hours of use per charge.
- Charging case: A case that also serves as a portable charger.
- Sensor & microphone: For touch operations and features such as noise cancellation.
3. The characteristic
The device can be called True Wireless Stereo (TWS) if they have some characteristics. TWS does not have a cable connection between the right buds and the left buds, or to the phone. They use Bluetooth to connect with the device.
TWS has a charging case that has functions for storage and charging. You can use the TWS just for the right buds or the left buds independently. Furthermore, they have some sophisticated features, such as active noise cancellation (ANC), a microphone for calls, and a touchscreen.
The Functions
The main function of True Wireless Stereo (TWS) is to provide a wireless audio listening experience. Here are some of the functions of TWS:
- Provides wireless stereo audio: Allows listening to audio in stereo from the main device wirelessly.
- Provides convenience and mobility: Offers the convenience of use and seamless mobility in the absence of wires.
- Versatility of use: Suitable for a variety of activities such as listening to music or making phone calls, even when doing sports, working, or traveling.
The Features
Here are some features of True Wireless Stereo (TWS):
- Touch control: Allows control of music playback, volume, calls, and other functions through touch only on the earbuds.
- Voice assistant integration: Allows integration with Siri, Google Assistant, or Alexa voice assistants.
- Find my earbuds: Helps locate lost earbuds with the tracking feature.
- Wireless charging: Enables wireless charging of the charging box.
- Water and sweat resistance (IPX): Equipped with an IPX4 standard or higher to protect the earbuds from damage due to water or sweat.
- Ergonomic design: Designed to be comfortable for long-term listening.
- Long battery life: Lasts from several hours to tens of hours in use.
The Advantages and Disadvantages
Every device has its positives and negatives, including True Wireless Stereo (TWS). Here are some of them:
1. Advantages
- No cable limits your move.
- Simple design, light, and easy to carry.
- Some models support smart features, such as active noise cancellation (ANC).
- Ideal to use for many activities, from sports to work.
2. Disadvantages
- Have a shorter battery usage than the earphone cable.
- Small size makes the TWS easy to lose.
- Some entry-level models might have a delay or trouble signal.
- More features, higher price.
Usage Regulations
Usage Regulations
True Wireless Stereo (TWS) technology operates within a specific frequency spectrum. In each country, all Bluetooth-based wireless devices must have a Type Approval Certificate.
Wireless regulations require all radio frequency-based devices to meet specific technical standards before they can be sold in that country. This certification ensures that the product meets safety standards and does not interfere with other communication devices.
The certification process involves technical testing, including frequency tuning, safety checks, and environmental compatibility verification. Ultimately, this results in a Test Report confirming that the product meets technical standards and is safe for use.
For companies wishing to sell TWS products, Dimulti, as a Type Approval Service, can assist with this process. Our services include preparing technical and legal documents, conducting necessary testing, ensuring compliance with national regulations, and helping companies streamline the certification process. [UN]