It's possible you read about the "popcorn effect" wherein film
mixers pipe background "noise" into the monitors so as to avoid
getting too subtle with the mix.
here's one mention of it:
m("29.TmIWa1mgo28.0","//talk.transom.org/WebX?14");@.eeb42cf/40">http:@.eeb42cf/40
In recording spaces unintentional background noise can come from
traffic outside the building, and from poorly engineered ventilation
systems. Studios in Manhattan deal with sound bleed from subways
under their buildings. It's expensive to "do it right" and requires
specialized knowledge and skills.
-jeremiah
>This a an interesting thought.....
>I recently read somewhere that even in recording studios there
>usually is a background noise of 20 dB.
>I wonder where that comes from....
>
>But seriously, can anybody verify this?
>
>Maybe this is not a new discussion, but is there really any acoustic
>environment without any noise?
>
>Are the mic self noise specs in relation to zero noise or to the the
>background noise of a laboratory?
>
>
>
>Volker
>
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