How Bluetooth Headphones Work
The decoder chip of the mobile phone decodes music files such as MP3, generates a digital signal and sends it to the Bluetooth headphones via Bluetooth;
The Bluetooth headset receives the digital signal and converts it to an analog signal that the human ear can understand through the digital-to-analog conversion chip inside the Bluetooth headset;
To amplify the analog signal, you must use the signal amplifier chip inside the earphone;
The headphone unit receives the amplified signal and makes a sound, and at this time, the ear hears the sound of music.
Do Bluetooth headphones ring?
However, the sound quality of Bluetooth headphones has long been criticized. The saying “Bluetooth headphones hear a sound” often circulates in the enthusiast circle. There are two main reasons for this:
When Bluetooth transmits audio data, it performs lossy compression on the audio, which loses sound quality;
Digital-to-analog conversion and amplification is done inside the Bluetooth headset. It’s hard to do both at the same time in such a small size, so for the sake of portability and price, sound quality is sacrificed even more.
The second point is the main reason. After understanding the principle of Bluetooth headphones, we know that for Bluetooth headphones to work properly, it is necessary to install batteries, Bluetooth modules, digital to analog conversion circuits, amplifier circuits, headphones. units, etc. in the headphone shell Series components, testing the manufacturer’s product design capabilities and comprehensive technical robustness. However, accomplishing this step only satisfied the need to “express”. If you want good sound, you should also tune in. This link should check the specific sound performance of the headphones with different materials, different diaphragms and different cables. In short, it is a more complicated process and the main R&D cost of the manufacturer.
Simply put, Bluetooth headphones are the product of compromise thinking, in order to get rid of the headphone cable shackles and reduce some of the sound quality. However, from today’s point of view, the sound quality of Bluetooth headphones made by traditional headphone manufacturers is generally better (of course, the price is also more expensive), which can meet the needs of most of users in terms of the appreciation of music, and the low-priced Bluetooth headphones produced by small manufacturers are in fact can only “hear” it.
