| Author
|
TC Electronic Finalizer vs. Waves plugins
|
jon
IsraTrance Junior Member
Started Topics :
17
Posts :
441
Posted : Apr 1, 2004 13:57
|
ok I finally got around to looking up the real answer about dB.... it is clear that 'the threshold of hearing' is not really the scientific definition of 0dB.
A quick Google found
http://www.jimprice.com/prosound/db.htm
which is extremely clear.... we are talking about dBSPL (Sound Pressure Level), where 0dB is a pressure of 0.000002 Nm^-2. When we talk about cubase etc then we are talking about dBFS (Full Scale) where (as we knew already) 0dB is just defined to be the maximum output level. |
|
|
binary_me
Started Topics :
6
Posts :
226
Posted : Apr 1, 2004 18:19
|
check this out....
Two engineering students were walking across campus when one said, "Where did you get such a great bike?"
The second engineer replied, "Well, I was walking along yesterday minding my own business when a beautiful woman rode up on this bike. She threw the bike to the ground, took off all her clothes and said, "Take what you want." The second engineer nodded approvingly, "Good choice; the clothes probably wouldn't have fit."
Three engineering students were gathered together discussing the possible designers of the human body. One said, "It was a mechanical engineer. Just look at all the joints." Another said, "No, it was an electrical engineer. The nervous system has many
thousands of electrical connections." The last said, "Actually it was a civil engineer. Who else would run a toxic waste pipeline through a recreational area?"
An engineer was crossing a road one-day when a frog called out to him and said, "If you kiss me, I'll turn into a beautiful princess". He bent over, picked up the frog and put it in his pocket. The frog spoke up again and said, "If you kiss me and turn me back into
a beautiful princess, I will stay with you for one week." The engineer took the frog out of his pocket, smiled at it and returned it to the pocket. The frog then cried out, "If you kiss me and turn me back into a princess, I'll stay with you and do ANYTHING you
want." Again the engineer took the frog out, smiled at it and put it back into his pocket. Finally, the frog asked, "What is the matter? I've told you I'm a beautiful princess that I'll stay with you for a week and do anything you want. Why won't you kiss me?" The engineer said, "Look I'm an engineer. I don't have time for a girlfriend, but a talking frog, now that's cool."
 I'm tripping on this KILLER drug these days -HOOCH..... |
|
|
|
ZilDoggo
Started Topics :
4
Posts :
663
Posted : Apr 1, 2004 19:17
|
jon,
this is a tricky subject (said after a lot of thought).,,.
but it realy depends on what you refer to with 0db.,
if you talk about 0db sound pressure level (as you assume) then you are right, 0db(spl) is about 0.000002N/m^2 and is the same as the human hearing thershold at 1kHz..,
but if you refer to the experience of hearing then 0db will simply be the softest sound one can hear (hearing threshold level) at a given frequency.,
so those two references are totaly different.,.,
that's why the relation between db(hearing) and db(spl) is curved!., they are totaly different 'mappings' .., but both can be expressed in decibels.,
you need the graph on the page you linked to convert between hearing decibels and sound pressure decibels.,
spl has a reference in physics (n/m^2) while hearing has a reference in human experience (loudness).,.,
these both have a thing in common, being the 0.000002N/m^2 point.,,.,..
it's all relative! 
grts,.
aka, |
|
|
|
|
