High frequency noise limits in products

Angelo Campanella acampane at postbox.acs.ohio-state.edu
Tue Nov 26 23:19:00 EST 1996


bobj wrote:
> 
> My apologies in advance if this is somewhat off topic but - Does anyone
> know of any specs or recommendations on maximum limits for high frequency
> noise  (>10 KHz) that consumer products can emit? TV sets sometimes emit
> 15KHz noise from the horizontal sync transformer and computers can generate
> audio noise from disk drives. Any answers, literature recommendations or
> pointers to more appropriate newsgroups would be appreciated. TIA.


No firm limits have been demonstrated to be applicable. 

In this "vacuum", it is often said that 85 dB in the 16 kHz octave band is a 
"reasonable" limit.

Ang.

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