scottam Posted January 15, 2013 Report Posted January 15, 2013 im doing a school physics project and we have the choice to do what ever we want! so obviously i chose sound and subwoofers, now the hard part, what do i test? so i come here shoot me some ideas of testable researchable ideas and situations. so far ive come up with the ideas of the frequency of the music effect on my cars circuits, the effect of the pressure on my body and how it effects delicate materials (ear drums) and finally the sound pressure with the effect on Doppler or the area of pressure. so any ideas would be much appreciated and i will include you and your contributions into my final report =) thanks everyone.
will77530 Posted January 16, 2013 Report Posted January 16, 2013 i dont think you have the equipment to do a report on how the sound pressure level effect your body so my vote if for how the different frequencies effect the cars electrical system
Noel989 Posted January 16, 2013 Report Posted January 16, 2013 Box rise? Build Log - http://www.stevemead...-cruiser-el-pt/
scottam Posted January 16, 2013 Author Report Posted January 16, 2013 i dont think you have the equipment to do a report on how the sound pressure level effect your body so my vote if for how the different frequencies effect the cars electrical system i have all the vernire probes in our physics room, but that is a good point, testing that would be a nightmare. now testing the frequency would easier, i could build an electric circuit with a frequency meter on it. Box rise? im not so sure what you mean?
Wicks Posted January 17, 2013 Report Posted January 17, 2013 An experiment that shows how sound is logarithmic rather than linear with regards to power input. Ex. It takes twice the power to increase sound output 3dB, which is barely noticeable. Most non-audio people would think that twice the power is twice as loud. Start with 1W and slowly increase the power as you plot the output (dB). You may need a cheap sound meter but it would be a good experiment and you wouldn't need to be super accurate to get reasonable results. This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026
scottam Posted January 17, 2013 Author Report Posted January 17, 2013 An experiment that shows how sound is logarithmic rather than linear with regards to power input. Ex. It takes twice the power to increase sound output 3dB, which is barely noticeable. Most non-audio people would think that twice the power is twice as loud. Start with 1W and slowly increase the power as you plot the output (dB). You may need a cheap sound meter but it would be a good experiment and you wouldn't need to be super accurate to get reasonable results. Sir you won, fantastic idea! Ill keep you posted on my results and will definitely give you credit where credit is due! Thank you man
Need Bass Posted January 17, 2013 Report Posted January 17, 2013 Do what me and my brothers did Corn starch & water + bass = My Build Log Heros get remembered, but legends never die.
Wicks Posted January 17, 2013 Report Posted January 17, 2013 An experiment that shows how sound is logarithmic rather than linear with regards to power input. Ex. It takes twice the power to increase sound output 3dB, which is barely noticeable. Most non-audio people would think that twice the power is twice as loud. Start with 1W and slowly increase the power as you plot the output (dB). You may need a cheap sound meter but it would be a good experiment and you wouldn't need to be super accurate to get reasonable results. Sir you won, fantastic idea! Ill keep you posted on my results and will definitely give you credit where credit is due! Thank you man Glad I could help. This is a pretty common question for a lot of people and there is a lot of theory that's quoted, but it would be neat to show some real world results. Good luck! This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026
Wicks Posted January 17, 2013 Report Posted January 17, 2013 Do what me and my brothers did Corn starch & water + bass = Oooo, non-Newtonian fluid, good one! That shits creepy... This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026
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