Are there any frequencies which are inaudible within the hearing range?

[bypassrestrictions]

There are noises the brain wont hear, even within the normal human auditory range.

Source: The physics of Bose speakers | Business Standard News


What are the frequencies or audio phenomena which the quote is referring to?

 

[Michael Bean]

It didn't refer to frequencies...only "noises the brain wont hear, even within the normal human auditory range."

I think it's talking about noise masking, where louder sounds overwhelm the softer sounds to the point of being unheard, or where the dynamic range limitations of the human ear come into play.

Mike

 

[haiqu]

Look up the field of psychoacoustics, which is where this idea belongs. Bose did a lot of research into sound masking (adjacent signals that make one of them "vanish") in order to simplify design processes. I don't agree with a lot of it, but it's out there.

 

[rayma]

Hearing has a wide dynamic range over long time periods, but at any given time the range is small and
adjusts for recently heard sounds. So if you have just heard a loud sound, you won't hear a soft sound
as well as you could otherwise, until some time passes for readjustment. Your eyes behave in a similar way.

If you go into an anechoic chamber for a while, you will be able to hear very soft sounds, which are
inaudible outside the chamber due to masking by the normal background noise level.