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What are True Wireless Earphones and How do They Work?

What are True Wireless Earphones and How do They Work?

From in-ear to overhead, wireless headphones come in a variety of different shapes and sizes and have quickly become one of the most used electronic devices. 

What are True Wireless Earphones and How do They Work?

Whether for listening to music, immersing yourself in content or enjoying conversations over the phone, a pair of quality earphones really does make all the difference.

In recent years, we have witnessed yet another leap in design and technology, which has brought us true wireless earphones. Not only does this new generation of earbuds have a futuristic look, it also makes use of a lot of different technologies to decompress digital signals coming from the audio source and transform them into soundwaves through vibration – a lot of things are happening within milliseconds of sound reaching our ears.

Even though many of us now use wireless earphones every day, most people wouldn’t be able to describe how the technology works. So, to help you understand this fascinating piece of technology, we’ve put together a simple guide and explained in non-technical terms the basics behind how true wireless earphones work.

What are True Wireless Earphones and How do They Work?

How Do True Wireless Earphones Work?

Generally speaking, true wireless earbuds have a primary – or master – earbud which acts as a bridge between the audio source and the secondary earbud. In addition to managing the connection between the two earbuds and the audio source, the primary earbud works to compensate for any audio delay – also known as latency – that can occur between earbuds during transmission.

To reduce latency, the two earbuds send information between themselves and calculate how long this process takes. Once this timeframe has been calculated, the earbuds understand how long the process should take which allows the master bud to compensate for any latency and ensures the earbuds remain synced to each other and to the source device. It’s important to note that latency can be strongly affected by environment, such as crowded or built-up areas, which can cause brief interruptions while listening to music or having a conversation.

How Do True Wireless Earphones Work?

However, Panasonic’s S500W and S300W true wireless earbuds use an independent left/right signalling system for each earbud, rather than a standard secondary/primary arrangement which, as outlined above, can be susceptible to dropouts. Not only does the left/right independent signalling system employed by these true wireless in-ear headphones help maintain a stable connection, but it also helps with sound balance.

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