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<blockquote data-quote="Moble Enclosurs" data-source="post: 7458163" data-attributes="member: 634917"><p>Programs, yes. Formulas, no. Because no program can account for the effects of cabin gain yet that I am aware of. What I do with my responses are done using individual formulas to make it as accurate as possible. Not perfect, obviously, but optimal. So, crap results from programs, i would agree to that on most of them, but cabin gain being a guess, it does not have to be. It just takes a LONG TIME to figure for it all, and calculating for up to 7 resonances of each path is all we need anyhow. After that, it becomes pretty blob-like with all of the gain responses together, then having to average them all afterward is a LOT easier. I can figure for hundreds of responses for a single vehicle in a matter of hours, but I do have a lot of the acoustical formulas set up in excel to help me speed up the process. And for those who are wondering, its not just getting the length of the modes that make the difference, as modal response is another thing. Like I always tell people that become interested, a LOT of work and time needs to be put into it, and it&#039;s not something I believe can be taught so quickly on a forum, but from what I have said so far in this post alone is enough for now //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif.</p></blockquote><p></p>

[QUOTE="Moble Enclosurs, post: 7458163, member: 634917"] Programs, yes. Formulas, no. Because no program can account for the effects of cabin gain yet that I am aware of. What I do with my responses are done using individual formulas to make it as accurate as possible. Not perfect, obviously, but optimal. So, crap results from programs, i would agree to that on most of them, but cabin gain being a guess, it does not have to be. It just takes a LONG TIME to figure for it all, and calculating for up to 7 resonances of each path is all we need anyhow. After that, it becomes pretty blob-like with all of the gain responses together, then having to average them all afterward is a LOT easier. I can figure for hundreds of responses for a single vehicle in a matter of hours, but I do have a lot of the acoustical formulas set up in excel to help me speed up the process. And for those who are wondering, its not just getting the length of the modes that make the difference, as modal response is another thing. Like I always tell people that become interested, a LOT of work and time needs to be put into it, and it's not something I believe can be taught so quickly on a forum, but from what I have said so far in this post alone is enough for now [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG]. [/QUOTE]

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