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Everything posted by Dreadhead
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Happy birthday guys. I hope you have a great one!
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Sorry Ken. I hope another opportunity presents itself soon.
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^ nice. I loves me some Wilco.
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U-Haul trailer and appliance dolley rental, lifting straps and 2" ball hitch to allow me to move my free washer/dryer combo to our weekend place. Already got refunded from Lowes and man it feels good to save over $1000
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Good luck Ken. I hope congrats are soon required
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LOL The space is tiny and it's one of the few that fits. Turns out there are some stackable units that fit too but this will do for now and if we don't like it, it was free and we can replace it.
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Happy Birthday Sir!
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Exactly!
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Got a extra small washer/dryer combo for free! My wife's friend wanted to get rid of it after upgrading. Cancelled the one we had on order at Lowes.
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Got up and finally did a real ride (I did a short shake out ride yesterday) on my new wheels even though I have not managed to meet the conditions I set myself for riding them. They are fucking awesome and drop the weight of my bike by more than a pound. Unfortunately I gained about 30lbs over the last few months so I'm no faster that's for sure... Dieting is going to suck but I'm tired of this shit. Now listening to my GS-X and HD800s while my wife is at brunch with a friend. Again fucking awesome.
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Nice job Tyll. I need to give a more detailed run through again but it sounds like I'm not going to get better than my GS-X/HD800 setup for what I like without getting into KGSSHV+009s which I'm just not going to do.
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Happy Birthday!
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Star Wars the Complete Saga on Blue Ray. Now I guess I need to get a blue ray player sometime.
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Dyslexia for the win (medically diagnosed and everything)! Damn. Boring stuff to follow: I developed a nonlinear wave model as part of my thesis work. The paper is going to study the time evolution of a large patch of ocean for the same initial conditions but with differing orders of non-linearity. Earlier this year I presented results (along with co-authors who did the experiments) showing that the Guassian distributed linear wave models that 90+% of the industry uses for predicting the amplitudes for incident waves do not accurately capture the large wave events at all. This has some potentially very serious repercussions on how we design for extreme waves. Also of (no) interest is that I recently did some numerical work that shows that the Gaussian distributed waves that everyone uses aren't so Gaussian when actually realized in the time domain using any of the standard methods. This is going to cause a lot of statisticians in my field to have some bad days. This should be published sometime in the next few months. This is the work I've picked up a committee spot for a PhD. candidate at Michigan (well at least in theory). All this statistics and waves stuff is a side project for me so it's hard to find time.
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Thanks jvlgato. I'm pretty excited as it's once every 2 years and I have been turned down in the past for another paper (probably justifiably so) and the last time I was accepted my adviser presented and did not take me (he was and is a bit of a selfish prick). Should be a good paper on the statistics and particle kinematics of nonlinear open ocean wave simulations (rouge waves and such), going to be interesting to see what we find. Edit: And yeah an excuse to go to Sweden is welcome as my wife's dad's family all lives there.
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I have a hard time thinking that the impulse response of anything ever looks perfect. The question is really perfect for what? If you have no overshoot then you have either incredible high frequnency response (unlikely) or too much damping to respond quickly (much more likely). A transducer with a lot of damping will look awesome on a CSD plot but that does not necessarily mean that it sounds good or even correct. To be honest at least to my looking at things your phone should reproduce the overshoot pattern of 22.05 kHz band passed data or some such with post-ring and all.
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Found out that my abstract has been accepted to "the" naval hydrodynamics conference in Sweden in August next year. I guess I should probably start working on actually doing the work.
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I think that using the straight up sweep based frequency response curves for comparison between the HD800 and 009 is probably a lot more accurate considering the delta omega problems that such a short time history give you as far as accuracy goes. Also the numerical solution you put up was very very cool but I wonder what boundary conditions were used to prevent acoustic reflection on such a small computational domain. Again though it's very cool you have access to that kind of software to waste time on this stuff
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Feel better Shelly
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Ah. I used the frequency response channels.
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Arnaud how did you generate those comparison plots for frequency response? I am using Tyll's data and getting something that looks different. I checked it 3 times.
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Tyll, Thanks for the 800 data. Fun times. I'll have to see if I can do anything fun with it soon. Looks like I'll be able to take the 800s and turn them into a easy facsimile of the 007s or 009s with very little pain. The joys of IRF. Now all I need is a way to do that without having to go through a PC. I think there is an IRF plugin for SlimDevices but that's a lot of work... and well I love the 800s.
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IRF = impulse response function CF = cluster fuck I did a thread about the math a while back. I am on mobile and can't find the link.
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Neat stuff. Tyll do you have a measurement spreadsheet for the HD800s? I'm going to be off for a few weeks and I may have some time for some math fun and if I have HD800 data from your setup I do some IRF inversion fun and see if I can model the SR009. Not that it's fun to many but since I spend most of my time wrestling with a giant CF software mess some elegant programming is fun at times.
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Today I went for a ride at the lake house for the first time. I am even more happy with the purchase now. So nice to see less than 20 cars in 90min+ of riding.