Topband: Psychoacoustics

[Lawrence Stoskopf]

This is a well researched science.  Utilized by those compressing data to 
take out stuff that the normal ear can't hear anyway.  A loud noise will 
block out anything shortly after.  Some tones mask others nearby, etc.  I 
had dinner in Vienna with an expert on the subject:  he wondered why we 
don't design receivers to take out what we can't process anyway so as to 
decrease the load on the ear.  Yes we can filter from white noise or signals 
of similar level closely spaced, but then it gets difficult. 

Remember that NASA (was it a hoax) thing about taking out a wide swath of 
speech as it wasn't important? 

I gave a talk at CSVHF on weak signal enhancement with noise.  I'm no 
expert, but this stuff is interesting. 

N0UU