🔴 Microphones: ANC headphones are equipped with one or more microphones placed on the outside of the earcups. These microphones pick up the external sounds in your environment.
🔴Sound Analysis: The recorded sound signals from the microphones are analyzed by the headphone's internal electronics. This analysis helps to identify the frequency and amplitude characteristics of the incoming ambient noise.
🔴Anti-Phase Sound Generation: After analyzing the external noise, the headphones create an "anti-noise" signal. This signal is essentially an inverted copy of the incoming noise, but with the amplitude and frequency adjusted to cancel out the unwanted sound waves.
🔴Speaker Output: The anti-noise signal is played back through the headphones' speakers or drivers. As the anti-noise signal meets the incoming ambient noise, they interfere with each other in a way that leads to destructive interference.
🔴Noise Cancellation: Destructive interference occurs when two sound waves with equal amplitude and opposite phases meet. This interference cancels out the ambient noise, significantly reducing its impact on your ears.
🔴Balanced Sound: ANC headphones also allow you to listen to audio content simultaneously. The audio signal from your music or other media is mixed with the anti-noise signal, providing you with a balanced and immersive sound experience.
It's important to note that active noise cancellation is more effective at reducing repetitive and constant sounds (such as engine noise or air conditioning hum) than sudden or irregular sounds (like a loud voice or a door slam). However, the technology continues to advance, and newer ANC models are becoming increasingly capable of handling a wider range of sounds.
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