I just can’t wrap my head around it. Is it just crazy brain things, a difference in number of waves, or some other thing? How is it possible that a speaker can replicate all sounds?
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The human range of hearing is roughly 20 Hz – 20 kHz, so a 3000 MHz signal would not be detected at all. But in general, the inner ear contains many tiny sensory hair cells, each sensitive to a narrow range of frequencies. This allows the brain to split a signal into its frequency components. How exactly the brain processes this data into something we consciously perceive as noises or speech is not fully understood. We have some idea of what the function of certain brain regions is, but at the lowest level the brain consists of incredibly complex neural networks, which are currently practically impossible to fully analyze.
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