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mrray13

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If not, add FFT or Fourier Analysis and aliasing together

:D

I shall soon venture again into that.

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419759_309186875805207_100001416919164_818723_149421115_n.jpg

Jesus fucking Christ people should not be "tattoo artists"

I hear you there. This is from the shop down the street.Doh.gif 4 shops in two blocks, all with VERY different MO's. I guess I am doing something right since I never seem to run out of flesh.

402698_3030928175435_1329785325_32982452_2126891642_n.jpg

People need to spend a little more money to get something quality.

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I was making pizza today on the egg temp was 600+ and I went to peek in the egg and forgot to burp it. Most all of my hair is now singed, then the wife comes home and says boy you look gray. Lesson learned and I will not do that again.

Did you burn up your gasket? If so, give me your address.

No the gasket is still good, just need my hair to grow a little. Thanks.

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So if you camera does that (might not) then play 15Hz and watch the wave go away. (play half the fps - nyquist)

This is what my snorkling video camera is able to be set to. I have it set to 1080 so it was only doing 30fps, next time I will set it to 720 and see.

  • 1080p—1920 x 1080, 30 fps
  • 720p / 60 fps—1280 x 720, 60 fps
  • 720p—1280 x 720, 30 fps

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Jared that UV tat looks awesome!

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I made a quick video of my subs today and it looks like they are doing the wave. What makes it look like that?

Aliasing.

Google it and all will be clear.

:)

If I use an old VHS camcorder would it look different because it is not digital?

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aliasing01.gif

In the illustration the green lines represent the points at which the two functions are observed. At those points the functions have the same values and would thus generate the same vector.

The nature of the aliasing for a particular number of observation N can be determined analytically but it is more convenient to show the aliasing by way of a table of the dot products of the vectors generated from sin(jx) and cos(kx) for various values of j and k for a particular value of the number of observation N. The table below shows the dot products for N=4 and for j and k running from 0 to 5. The squared norms shown on the diagonal should be 0 for the zero vector sin(0x) and N for the unit vector cos(0x) and N/2 for all other independent vectors. These values are shown in highlighted in green. When a vector for a higher value of j aliased into the zero or unit vector its squared norm is 0 or N. The values on the diagonal of the table in which the squared norm is not N/2 are shown highlighted in blue. For the vectors generated by sin(jx) and cos(kx) for i&neq;j the dot product should be unless one is aliased into the other. The case of a nonzero dot product off the diagonal are shown highlighted in pink. In this case when N=4 the vector for sin(2x) aliases into the zero vector sin(0x) and the vector for cos(3x) aliases into the unit vector cos(0x). Likewise the vectors for sin(3x) and cos(3x) for the case N=4 alias into the vectors for sin(1x) and cos(1x), respectively. There is no way to get independent vectors for this case beyond the ones for j = 0 and j=1. But an arbitrary 4 dimensional vector will not necessarily be perfectly representable by three vectors. Thus for the case N=4 the Fourier series cannot perfectly represent the observations. The inclusion of vector that aliases into another vector makes the representation or fit of the Fourier series worse rather than better. In fact, the unintentional inclusion of an aliasing vector would make the determination impossible because the matrix of dot products would not have an inverse.

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Why the hell would you need to bump threads IN YOUR OWN FORUM! If you are going to bump them, at least do it by answering the questions in the thread and not just putting, "OMFG Dealz s0 gud so don miss out!"

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Just read a post where the period placement was like this .It bugged me quite a lot .And was wondering if it bugged anyone else ,or if I am alone and weird .Didn't want to post in the original topic ;it was a pretty serious one .It really does drive me crazy .

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Aren't they all B-stock?

Order now and save man!

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Just read a post where the period placement was like this .It bugged me quite a lot .And was wondering if it bugged anyone else ,or if I am alone and weird .Didn't want to post in the original topic ;it was a pretty serious one .It really does drive me crazy .

Yeah it bugs me too ...

Edited by stefanhinote

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I was making pizza today on the egg temp was 600+ and I went to peek in the egg and forgot to burp it. Most all of my hair is now singed, then the wife comes home and says boy you look gray. Lesson learned and I will not do that again.

Did you burn up your gasket? If so, give me your address.

No the gasket is still good, just need my hair to grow a little. Thanks.

AMAZING how much fire the burp takes care of. Mine melted the fuck out of my gasket, so I added a gasket that is stable to 1750F. Of course, while setting in the new gasket (read first roaring fire) I singed/melted part of it as well. You can make some heat with these bitches.

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So if you camera does that (might not) then play 15Hz and watch the wave go away. (play half the fps - nyquist)

This is what my snorkling video camera is able to be set to. I have it set to 1080 so it was only doing 30fps, next time I will set it to 720 and see.

  • 1080p—1920 x 1080, 30 fps
  • 720p / 60 fps—1280 x 720, 60 fps
  • 720p—1280 x 720, 30 fps

And you'll get aliasing at above 30Hz with 60fps.

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I was making pizza today on the egg temp was 600+ and I went to peek in the egg and forgot to burp it. Most all of my hair is now singed, then the wife comes home and says boy you look gray. Lesson learned and I will not do that again.

Did you burn up your gasket? If so, give me your address.

No the gasket is still good, just need my hair to grow a little. Thanks.

AMAZING how much fire the burp takes care of. Mine melted the fuck out of my gasket, so I added a gasket that is stable to 1750F. Of course, while setting in the new gasket (read first roaring fire) I singed/melted part of it as well. You can make some heat with these bitches.

Yes it is amazing, but nothing compares for cooking. What material did you use?

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So if you camera does that (might not) then play 15Hz and watch the wave go away. (play half the fps - nyquist)

This is what my snorkling video camera is able to be set to. I have it set to 1080 so it was only doing 30fps, next time I will set it to 720 and see.

  • 1080p—1920 x 1080, 30 fps
  • 720p / 60 fps—1280 x 720, 60 fps
  • 720p—1280 x 720, 30 fps

And you'll get aliasing at above 30Hz with 60fps.

I realized that after I finished reading up.

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I made a quick video of my subs today and it looks like they are doing the wave. What makes it look like that?

Aliasing.

Google it and all will be clear.

smile.png

If I use an old VHS camcorder would it look different because it is not digital?

Still digital of sorts. ie, has an effective sampling rate. I'd bet its lower than 30fps as well, but don't really know.

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I was making pizza today on the egg temp was 600+ and I went to peek in the egg and forgot to burp it. Most all of my hair is now singed, then the wife comes home and says boy you look gray. Lesson learned and I will not do that again.

Did you burn up your gasket? If so, give me your address.

No the gasket is still good, just need my hair to grow a little. Thanks.

AMAZING how much fire the burp takes care of. Mine melted the fuck out of my gasket, so I added a gasket that is stable to 1750F. Of course, while setting in the new gasket (read first roaring fire) I singed/melted part of it as well. You can make some heat with these bitches.

Yes it is amazing, but nothing compares for cooking. What material did you use?

Can't remember, but it was like $100. I have enough to do another 10 BGE's though :) So, let me know when/if you need some.

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Did the aliasing stuff make sense to you? Basically you are undersampling which means there are more than one way to connect the dots and analyzers (your eyes are one btw) pick the easiest path and not more complex assuming the sampling is good enough. In the case of the camera what it is recording is actually what is happening AT THAT FRAMERATE which means your eyes see the truth, the truth here though is that you aren't sampling fast enough :>)

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Just read a post where the period placement was like this .It bugged me quite a lot .And was wondering if it bugged anyone else ,or if I am alone and weird .Didn't want to post in the original topic ;it was a pretty serious one .It really does drive me crazy .

Me too.

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Did the aliasing stuff make sense to you? Basically you are undersampling which means there are more than one way to connect the dots and analyzers (your eyes are one btw) pick the easiest path and not more complex assuming the sampling is good enough. In the case of the camera what it is recording is actually what is happening AT THAT FRAMERATE which means your eyes see the truth, the truth here though is that you aren't sampling fast enough :>)

Useful info. :)

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