| Subject: Re: Finals is set!!!!!!!!!! |
Author:
Sayar
|
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Date Posted: 00:34:25 10/14/05 Fri
In reply to:
Jeremy
's message, "Re: Finals is set!!!!!!!!!!" on 06:59:59 10/13/05 Thu
>We are mainly following every other organization that
>has their finals this time of year - and actually cold
>weather wil l actually increase your score unless it's
>extreme. cold air is heavier than warm air. Anyway,
>we're looking forward to it --who's going to be
>there???
>
>If you need directions, or are running late-call my
>cell (406) 489-0009
>
>See U There!!
>
>Jeremy
Yes dB. Drag, USACi, NSPL, MECA, and SLAP have their finals around this time but most of them host the finals indoors.
Who else is haveing their finals around this time? Other then dB. Drag, USACi, NSPL, MECA, and SLAP... lol
Also, I will have to respectably disagree about SPL scores being louder in the cold. On extremely RARE occasions that is true but 99% of the time it is not. I have had my Term-Lab for about one year now. And in that time I have metered well over 200 car audio systems. I have found that with every one that I have metered in the winter and in the summer, they ALL have been ALOT louder in the summer. I know that with my system it is about 2.5 dB. quieter in the winter. As far as air densities are concerned you are correct that cold air is more dense then warm air. Which is exactly why audio systems are quieter in the winter. I actually did my final report in Physics in high school about the acoustic properties of cold and warm air. This is what I know for a fact. Cold air is LESS permeable then warm air. Additionally, cold air actually reduces the speed of sound. The speed of sound traveling through air at 72 degrees with a pressure level of 14.695 PSI with 40% humidity is 772.24 MPH with a density level of 1.19027 kg/m^3. The speed of sound traveling through air at 50 degrees at the same pressure level and with the same humidity level is 755.27 MPH with a density level of 1.24435 kg/m^3. Because there is more resistance with colder air it takes more energy for the sound to move through it. However I am going to get some more information for you on this topic. I know a few experts I am going to ask. I have knows some of these people for over three years. I am sure you have herd of some of them.
Wayne Harris, owner of dB. Drag Racing
Chris Norris, Rockford Fosgate competitor (175 dB.+)
Tommy, Rockford Fosgate Tech. support personal and 165 dB.+ competitor.
Frank Wilczek, MIT physics Professor and holder of a 2004 Nobel Prize!
It will take a few days to reach some of these people but when I reach at least three of them I will post the results they said for you.
Have fun at the finals!
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