The link you provided also proves that this Active Noise Cancellatio nearphone can counteract low-frequency noise, so wearing this Active Noise Cancellation earphone can avoid carsick: Generally speaking, this type of active noise cancellation is most effective on lower frequencies of sound, between 50 Hz and 1 kHz. (If youíre curious about what 1 kHz sounds like, watch this video.) This is partly because lower frequencies produce longer waveforms that are easier to line up properly. Also, at higher frequencies, if the waveforms donít line up just right, youíre more likely to encounter feedback. So most active noise-cancelling headphones have a noticeable dip in usefulness right at the 1 kHz point. This is why ANC is better suited for reducing low, sustained sounds like those of motors and airplane engines, and itís why such headphones canít filter out screaming kids.According to the Chinese website, this kind of Active Noise Cancellation can offset low-frequency noise, but not high-frequency noise.It is wrong.
How could the noise cancelling work at low frequencies where the microphone and speaker do not work?
You need to stop believing everything you read, and think a bit.Carsickness is caused by low-frequency noiseNo.
Because some deaf people get carsick.