rusty959

Then maybe it is possible what this technology is seeking to do is make it possible to have the same effect of this expensive and not convenient setup with acoustic foam etc be elsewhere available with a crappy setup by being able to somehow make cancellations, idk. I know very few people who have a setup full of acoustic foam. (actually no one) Obviously Im not an expert in this, which im assuming you aren't either. (which you seemed to state yourself) Im in electrical engineering... not sound engineering or whatever that would fall under, but I do know a bit about physics and waves. Thats why we have experts like in the video. yay.

I believe you are correct in saying that a normal stereo setup will play 3d sound. That is the point of the video. But not any sound that is played is "3d sound." You can't tell where a specific sound is meant to come from unless it is recorded in a way intending this. If the out from both speakers are the same the sound will "come" from directly infront of you. A good stereo setup intends to increase the frame of where sound can "come from" from infront of you to also being able to go from the left speaker to right or anywhere in between. For many things this is perfect. 3d sound intends to take this same setup and also have it able to make sound seem as if it is coming from the sides or behind or around you. Similar to surround sound in a sense, but only two speakers, and apparently with better definition. It seems as if from your post that you are saying a normal 2 speaker setup with normal music not using the "3d sound" techniques can make sound seem like it is coming from behind you. If that is the case explain it to me, because I don't see how you could think something like that. There is also a difference between being able to make your mind believe it could possibly be behind you and actually thinking it is behind you. For example I believe that if the guy in that video had his way you could have speakers set up somewhere in the open in front of a person, play a sound, and make that person turn around thinking it is behind them. Not possible with normal sound. I don't get why I am writing so much.

If you don't think its worth the work, then don't worry about reading what im about to say. You are wasting your time, as likely am I. If you can use laptop speakers as they claim, it isn't much work to get a "perfect" setup. Laptop speakers are pretty crappy. Thus, it is worth it if they can get it to work. Second, there is no way for a normal setup to make it sound like sounds are coming from behind you. This "3d sound" attempts to accomplish this. Not saying they have been or can be successful, but thats what one of the the goals are. Anyways just for the luls I tried out some of the sound from the video on my laptop speakers just now and I can't say it is all that great. But hey, whatevs.

First, watch the video. It answers that about 2-3 minutes in if I remember correctly. No one said it would be easy. Assuming it could work, it would take a lot of research and processing. That is what this guy is doing.

Im surprised this got bumped. Im also surprised Im still replying. which is why you missed it's for head phones Not that it matters but I am now convinced you haven't watched the video. How can you say it is "for head phones" when the entire first minute is about how it is for regular speakers and the first image in the video... the first 6 seconds... has obvious text that says "The following video features audio demonstrations designed for playback through laptop speakers" after which is the outlines of headphones being crossed out and a laptop with sound coming from it? lol.

Playstation network was down? Thats interesting.

Some kids at my college made this one:

A fuse blows because of heat melting it. You cant heat the "wire" inside the fuse instantly enough for it to blow, so yes, shorting it out across a battery will probably be the equivalent of of shorting out an equivalent wire across the battery for a couple seconds or so, depending on fuse size of course. Obviously a larger fuse will take longer.

Things to consider: First, inverting means more airspace in the box. Im sure you know what that means. Second, if the box is sealed the smell will tend to stay inside the box.... you won't notice it as quickly. Third, you are supposed to reverse the polarity when you inverse. Just an fyi if you didn't already know.

So what all wires are you planning? a pos and neg run to a back battery? or directly to the amp? What else? Give a list and we can help more, im still not 100% what you are saying you are thinking of putting in. Tell us what you are planning on putting in and what you could put in. We could tell you the best route to go.

So baller. Good work.

Its probably more the small size of the engine/engine bay than the 2.0 liter deal. You could do dual but you would likely somehow have to fab something up yourself.

What are you going to be running? Id say if it isn't over a few thousand watts Run your runs to the back and ground it and all and worry about upgrading your engine ground later. Under a few thousand watts it won't make a difference. Watch your voltage drop to make sure it isn't too much and you will be fine. The front battery to frame is more important than the engine ground anyways. Only thing the engine ground does is flow current from the alt. Won't have as much of a load as the battery.

Are you going to be grounding anything to the frame in the back? If so yes upgrade the engine ground if you can. If you aren't going to be grounding to the frame in the back there is no need. But I think it is pretty common practice to ground in the back even if running a ground line.

Keep in mind that lower current to your speakers doesn't mean less current through your power wire. The only reason it might (in almost all cases would) be less is the efficiency.

Not necessarily this guy is making it so even the simplest installs can have 3d sound without needing time alignment and this also makes the music 3d by changing the way the music is heard through your left and right ear, giving it depth without having to have a SQ car. This guy gets it. This guy doesn't get it. Its not just time alignment. If it were it would be pretty simple... a bit of trig and simple physics. With just time alignment you couldn't tell if it were in front of you to the right or behind you to the right. Also, only time alignment wouldn't be enough to fully get the feel for most people. It is much more detailed than that. I could explain some of it, but the best way to tell is to actually watch the video. Though he didn't mention it here ive seen elsewhere in similar studies/technology that the sound is also slightly altered to mimic how your body/ear reflects the sound waves. Now, tell me how your sq install does anything mentioned. It doesn't even do time alignment like you are trying to say it does. The only time alignment it will do is getting the same wave from different speakers to you at the same time. Nothing to do with direction perception. Just a set time delay for all notes.

I think your missing the point, it's still install dependent. I don't care how they record it early refractions and bad angles will still mess it up Thats not the point. Lol. Anyways I didn't say a crappy install wouldn't mess up the effect... at all. What I said was statements like "sq cars have 3d sound " and "sq cars are like that" and "...that has time alignment making this happen" are pretty unrelated. The entire theory behind it all is assuming a non crappy setup to give the effect similar to how a toaster manufacture assumes you will actually plug in the toaster to get the toasting effect. Make sense? Good work.

Id suggest setting everything properly (of course with a scope) with the headunit turned up. Then you can turn the head unit sub output down. That way you know you can turn it up and not be clipping if you ever wanted.

I think you guys (or atleast some) are missing the concept. Its more in a way of recording the audio than the equipment.

How are you measuring the power?

Good work. Ive done this to many a power supply.... works pretty well. Kickass: Im assuming it has multiple 12 volt rails?

This is starting to be the correct answer. The reason so many people bash the cap is because they misinterpret its purpose. A capacitor keeps voltage continuous. What that means is the voltage across it can't change instantly. (hopefully no one tries to say anything against what I just said... its in the formula for a capacitor) That being said if the capacitor is small enough it may still appear non-continuous. Get a large enough capacitor and you will start to see the difference. Where will you see this difference? Definitely not in long bass lines... the capacitor has plenty of time to discharge. This is where you need something like a battery/more powerful alternator. Quick bass hits? Sure, you might notice the voltage not dropping as low. You may have heard the term "stiffening capacitor" before. Precisely. Here is another place it can help. Power is a form of average across time. If an amp wanted to (hopefully it never would to this degree) it could try to draw say, 1000 amps for 10 ms and no current for 90 ms. If it did this it would average 100 amps across time. 100 amps may not be so bad but you are pretty much definitely going to get some voltage drop from 1000 amps. While a normal battery/alternator system couldn't deliver this 1000 amp load a capacitor could. Maybe not for long, but 10 ms shouldn't be a problem assuming it is large enough capacity. Then it can charge up during the other 90 ms. As stated hopefully no amp would ever do this. To this degree. That being said the load doesn't have to be constant. It can fluctuate a bit. Not going to lie I am not sure exactly how much it can.... I need to get out the oscilloscope and do some testing. But, say you are playing a 40 hz note at decent power. There is a good chance the amp could be fluctuating how much power it is drawing 40 times a second depending on how it is built and a capacitor would "stiffen" up the voltage supply. Again, I should get out and do some testing. Would be a good time. Moral of the story. You probably won't notice a difference if you put it in. But, it shouldn't hurt anything. Ive never understood how people get the idea a capacitor causes the alternator to have more load. Someone feel free to explain it to me.

Agreed. Being an electrical engineer in training I could probably help a bit with the cap issues but I can't get through the post without getting distracted.

I go to school with 2000 other students... basically all engineers. Aka, I go to school with 2000 other nerds. Yes, I know plenty of these types of people.

I also got some headphones. Shipped quickly and was a pleasure to deal with. AAAAAAAAA++++++++++++++++++++ (take that chode)