Introduction of active noise reduction of motorcycle helmet bluetooth headset

Source: Freedconn - Shenzhen FDC Electronics Co., Ltd Date of issue: 2020-06-23 11:08:00

Noise reduction is a daily topic discussed by motorcycle friends, which determines the riding experience on the motorcycle road. How much do you know about noise reduction of active motorcycle helmet Bluetooth headset? Next, Fudekang Electronics will introduce it to you!

There are three common noise reduction measures for motorcycle helmet Bluetooth headset, namely sound source noise reduction, transmission process noise reduction and human ear noise reduction. They are all passive. In order to actively eliminate noise, people invented the "active noise reduction" technology. Its principle is that all sounds are composed of a certain spectrum. If you can find a sound whose spectrum is exactly the same as the noise to be eliminated, but the phase is just the opposite, the noise can be completely eliminated.

1. What is active noise reduction

In short, it collects regular noise from the outside (such as the roar of locomotive engine) on some special occasions, such as high-speed driving. Through the circuit or algorithm, the reverse noise signal is added to the music signal, and the sound in the motorcycle helmet Bluetooth headset heard by human ears can directly offset the external noise, so as to achieve the effect of noise reduction.

2. How does active noise reduction work

The noise reduction microphone is used to input the external noise into the internal circuit, then "process" it, and then output it through the headphone speaker. In this way, the external noise sound wave and the noise signal generated by the speaker will cancel each other after superposition. It can be described as "fighting poison with poison"!

3. What is the effect of active noise reduction

The greater the ambient noise, the stronger the contrast between noise reduction and opening, which can surprise you. Active noise reduction can continuously monitor and measure the noise transmitted by the power system to the driver, and adjust and control the waveform and amplitude of the reverse wave sent by the speaker in real time, so that you can get rid of the noise of the motorcycle helmet Bluetooth headset when the motorcycle engine is running to a certain extent.

The above is about the active noise reduction of motorcycle helmet Bluetooth headset. I hope it can help you. If you want to know more industry information, you can pay attention to our website. If you have any questions or need this business, please call us!



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Freedconn - Shenzhen FDC Electronics Co., Ltd


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