Use a High Pass Filter for multiple connections

Hello, you can check this site: http://www.cableboxfilters.com
You can find the best filter and these are newly designed and is a super mini size high pass filters. They have excellent specifications, dimensions of only 13mm x 40.5mm and a weight of only 18g. These filters are best suitable for use in many communications applications, such as CATV, Cable Internet and other RF systems. Hope that this info can help your problem.
With too many connections as you mentioned, you must install a High Pass Filter. These are newly designed and is a super mini size high pass filters. They have excellent specifications, dimensions of only 13mm x 40.5mm and a weight of only 18g. These filters are best suitable for use in many communications applications, such as CATV, Cable Internet and other RF systems.

Hi, Graham,
You wrote: "...There is a Lowpass filter writen within LabVIEW (IMAQ LowPass) this has been optimized for multicore prosessing and runs pretty efficiently..."
Sorry, but I can't recognize any advantages of IMAQ LowPass on the DualCore system. See attachment. When this VI running, then I have approx. 50% CPU load, and no any effect when I set 2 cores with IMAQ Multi-Core Options. This take always approx. 60 - 70 ms for 5x5 low pass on 1024x1024 8 bit image.
I'm missing something?
Upd:
Sorry, forgot technical data:
LabVIEW 8.6f1; Vision 8.6.1; WinXP Prof SP3; Intel Core2 6700 CPU
Andrey.
Message Edited by Andrey Dmitriev on 11-19-2008 02:21 PM
Attachments:
Benchmark.vi ‏16 KB

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How does high pass filter determine frequency

I Am having a hard time understanding how the high pass filter determines high vs low frequency. What value is it measuring. ? Change in RGB values or Contrast ? I see the words sharpness or blur , but what values determine amount of blurriness or sharpness? Is there and actual frequency being measures or is that just a metaphor To compare it to the audio high pass filter ?
Any insight into the inner workings of this filter is appreciated.

Some further explanations:
Audio signals:
frequency = cycles per second
This is the frequency in the time domain.
An arbitrary signal can be represented by a bundle of harmonic signals (sine, cosine)
plus a DC-part (direct current, non periodical component).
A typical high-pass filter for audio signals:
The cut-off frequency fc is found at the transition between increasing gain
(low frequency) and fixed gain 1.0 (high frequency).
frequency   gain (attenuation)
0.01 fc   0.01
0.10 fc   0.1
1.00 fc   0.707
10.0 fc   1.0
100 fc   1.0
A typical high-pass filter for digital images:
frequency = cycles per unit length or (better) cycles per pixel
This is the frequency in the spatial domain.
The highest frequency is 0.5 cycles per pixel (alternating black and white pixels)
An arbitray row in a digital image can be represented by a bundle of harmonic signals
plus a DC-part.
Each channel R,G,B is filtered individually, one after the other.
Frequency and gain are as above.
A high-pass filter applies an attenuation <<1 to low frequency signal components
and removes the DC-component entirely. This would result in a black background.
Therefore the background is shifted to R=G=B=128 (8bit per channel) or
R=G=B=0.5 (normalized).
Sharp edges contain stronger high frequency components. These are retained.
http://en.wikipedia.org/wiki/High-pass_filter
In this doc we find a simple implementation:
y[0] := x[0]
   for i from 1 to n
     y[i] := a * y[i-1] + a * (x[i] - x[i-1])
   return y
x[i] are values R (or G or B) in a row at column i in the original image
y[i] are values R (or G or B) in the same row at column i after filtering.
Factor (a) contains indirectly the cut-off frequency.
This example does not yet apply the shift to R=G=B=128.
The implementation can be different (non-recursive filter instead of recursive, as above,
higher order instead of first order, using a filter kernel 3*3 or 5*5 pixels instead of working
in each row independently).
I'm not trying to explain how Photoshop works! There are so many alternatives.
Best regards --Gernot Hoffmann

Shall I use one datasource for multiple connection pool?

Hi,
I need to clarrify that, Shall I use one Datasource for multiple connection pool in distributed transaction?
Thanks with regards
Suresh

No. If its transactions across multiple databases you should use different datasources.

High pass filter don't work

i used the following setting for the testing;
input signal 1: 2khz sinewave, amplitude 1V
input signal 2: 50Hz sinewave, amplitude 10V
the above 2 signals are added together and fed into a filter. my objective is to remove signal 1(1V sinewave). i've tried some filter but it don't seem to work. for the attached vi, i used high pass filter. the filter don't work.
i tried to view the frequency component of the signal before and after the filter and found out that both signals pass through the filter.
1. why isn't the 50Hz signal being filtered off?
i had the following values:
before filter after filter
50Hz ==> 3Hz
2kHz ==> 120Hz
the filter seem to scaled down the frequency compon
ent instead of filtering off the 50Hz.
2. why is this so, how can i solve this problem?
3. what should i take note when setting the parameters of the filter?
Attachments:
time2freq_domain.vi ‏573 KB

You might try increasing the number of FIR filter taps. Also, would an IIR filter work for you? I recoded your example using the waveform filtering VIs that were developed for LabVIEW 6i. Please look at the number of taps for the FIR filter, and the PassBand and StopBand frequencies. Also, notice the IIR filter's superior suppression of the low frequency sinusoid.
Attachments:
time2freq_domain2.vi ‏107 KB

How can i disable the high pass filter on the headset mic on the iphone 4?

i would like to use my iphone for recording and frequency measurement apps. i have an adapter that allows me to use the headset mic input https://www.petersontuners.com/index.cfm?category=135&action=itemView&itemID=39 however, there is a high pass filter up to about 200Hz on both the headset mic input and the external mic. one app apparently has a work around in ios6 http://blog.faberacoustical.com/2012/ios/iphone/finally-ios-6-kills-the-filter-o n-headset-and-mic-inputs/ but is there an iphone setting that could temporarily bypass the filter? if not in ios6, if i upgrade to ios7 will i be able to do this?

There is no setting on any iPhone to disable/by-pass this.

When, why, and how the high pass filter

i have a good grasp of the arcane nuances of unsharp mask,
but nothing on high pass filter, So can someone offer just a
summary of the thinking of when we select that tool, and
what parameters to consider to what end. Thanks a lot
best,
Steve z

The high pass filter is a tool for finding edges...from that, you can adjust the edge width to increase or decrease the radius of the edges. Everything that is not an "edge" turns into a middle grays. Depending on the blending, this give an opportunity to modify edge or non-edge values. Overlay lightens the lights while darkening the darks and does nothing at 50% grays In the case of high pass, this means the light side of the edges gets lighter and the dark edges darker. This can have a sharpening effect similar to USM without the threashold control.
If the HP radius is small, the effect is sharpening...if the radius is larger, it's more of a tone /contrast control. If you constrain the effects using Blend If adjustments, you can impact midtone contrast as mentioned by Robert.

How to use the same POWL query for multiple users

Hello,
I have defined a POWL query which executes properly. But if I map the same POWL query to 2 portal users and the 2 portal users try to access the same page simultaneously then it gives an error message to one of the users that
"Query 'ABC' is already open in another session."
where 'ABC' is the query name.
Can you please tell me how to use the same POWL query for multiple users ?
A fast reply would be highly appreciated.
Thanks and Regards,
Sandhya

Batch processing usually involves using actions you have recorded. In Action you can insert Path that can be used during processing documents. Path have some size so you may want to only process document that have the same size. Look in the Actions Palette fly-out menu for insert path. It inserts|records the current document work path into the action being worked on and when the action is played it inserts the path into the document as the current work path..

High Pass Filter

I am trying to do a High Pass filter and I press CTRL I and go to use on subject an it is painting subject grey .........don't know what I am doing wrong? Pease help

Filter > Other > High Pass is where High Pass is.
Ctrl + I (as in, "India") simply inverts (at least by default).

Low Pass + High Pass Filter

I've just updated from logic 7 to Logic 8. I can't seem to load up some of the filters that I've been accustomed to in Logic 7 - namely the Low Pass Filter, High Pass Filter and the Low Cut Filter. When I load sessions arranged in Logic 7 into Logic 8, I can clearly use them but they are not present in the Filters panel? Any ideas?
Zav

zav wrote:
I've just updated from logic 7 to Logic 8. I can't seem to load up some of the filters that I've been accustomed to in Logic 7 - namely the Low Pass Filter, High Pass Filter and the Low Cut Filter. When I load sessions arranged in Logic 7 into Logic 8, I can clearly use them but they are not present in the Filters panel? Any ideas?
Zav
That's because they are in the EQ section. EQ > Single Band >

Can I use the same Apple ID for multiple devices

Can I use the same Apple ID for multiple devices?

Yes. Up to five devices can be authorized on a single computer using the same Apple ID. You can also use the same Apple ID on multiple devices is they are all going to use the same iTunes Library by the same user. But it's ill-advised if multiple users are involved who wish to keep their devices separate from the devices belonging to other users.
How to use multiple iPhone, iPad, or iPod devices with one computer
Using More than One iDevice on the Same Computer
This applies mainly to couples who are adding another device and do not want their email, messages, etc. being duplicated on both devices. To begin read: How to use multiple iPhone, iPad, or iPod devices with one computer. You need to establish a separate Apple ID and password for whomever will use the new iDevice. See Apple - My Apple ID and Frequently asked questions about Apple ID. The easiest way is to do this on the computer using iTunes: iTunes- How to set up an Apple ID within iTunes.
On the computer create a new user account for the person with the new iDevice. This will be the user account that person will always use. He/She will no longer use the other user account. This way that person will have a separate iTunes Library
Start by transferring the new device(s) to a new account along with all your data. Save any photo stream photos that you want to keep to your camera roll (unless they are already in the camera roll) by opening your Photos app, tap on Albums icon at the bottom. Now, tap on My Photo Stream album; tap Select; tap on the photos you want to select;, tap the share icon (box with upward facing arrow) in the lower left corner; then tap Save to Camera Roll.
If you are syncing notes with iCloud that you want to keep then you need to open each of your notes and email them to yourself. Later you can copy and paste the text into new notes created in your new account.
Tap on Settings > iCloud > Delete Account (only deletes it from this device, not from iCloud; the person keeping the current account will not be affected,) provide the password to turn off Find My Phone and choose Keep on My iDevice when prompted. Sign in with a different Apple ID to create your new account. Choose Merge to upload your data.
Once you are on separate accounts, you can each go to icloud.com and delete the other person's data from your account.
Note: The essence of the above was created by user, randers4. I
have made substantial changes to improve readability and syntax.

Can I use the same email address for multiple seats in Creative Cloud for Teams?

Can I use the same email address for multiple seats in Creative Cloud for Teams?

No. http://www.adobe.com/products/creativecloud/faq.html
Can I buy more than one membership to an individual offering of Creative Cloud?
No, Adobe has moved to identity-based licensing with a technology that will not support multiple same-product licenses, so you can buy only one membership per Adobe ID. If you need two Creative Cloud memberships, you will need to purchase each with a unique Adobe ID. You can also purchase a Creative Cloud for teams membership, which allows you to purchase and manage multiple seats under one account.

Single bill for multiple connections

Dear All,
Is it possible to print single bill for multiple connections ? This is my requirement Customer X having 2 connections for Water and 2 connections for Electricity.But we need to bill Electricity and water in a different bill ,but 2 connections for water and 2 connections for electricity should be billed in a single bill.We have created a separate contract accounts for 4 connections.
Pls guide...
Best Regards
Jay

Hi,
I am not sure, if i completely understand your requirement.
But as per my understanding, you have 4 installations, ( 2 for Water and 2 for Electricity) and you want to have a single invoice created for Electircity and water.
So, its better to create a single contract account with multiple contracts.
If you are creating multiple contract accounts, then it would create multiple invoices (one per contract account - regular scenario). So, please have a multiple contracts with single CA.
Also, if you want to invoice all the contracts together, please find the option on contract for joint invoicing. (option 1).
And, in case you want to bill two connections of electricity as one entity and two of water as one, so in this case, have two contract accounts one for Electricity and one as a part of water. And assign all the electricity contract to one CA and rest of water to another CA.
Invoices are always created at contract account level and the billing documents are created at contract level.
Hope this helps !!
Regards,
Rajesh Popat

Possible to use Azure SQL as database for RD Connection broker high availability?

I am looking in to setting up a highly available Remote Desktop services service on Azure and note that the high availability for the Connection Broker service needs a full SQL database (rather than the LocalDB used for one instance). Is it possible
to use an Azure SQL database for these purposes (i.e. opposed to VMs running SQL Server)?
Has anyone had any experience with this? This would be nice as I am not looking at thousands of users and the Azure SQL would provide the high availability for the database without creating multiple (expensive) VMs running SQL server.

So far there's no such a feature in azure sql, you can vote for it
http://feedback.azure.com/forums/217321-sql-database/suggestions/423275-enable-sql-service-broker-in-sql-azure

Using high pass filter

I have a general question on using HPF in labview.
If I apply a hpf on 10 sets of data, 20 points each, is the results the same as applying the filter on all 200 points(the same values of course) at once?
I tried it and the results seem to be differenet....

Thanks! I will post a sample tomorrow but in the meantime this is what I am trying to do: It is a Butterworth filter, high pass, third order, sampling rate at 20 Hz. I have a version of the program which uses all 200 points and applies the hpf.
Now I would like to have another program that does the same thing, but this time works on smaller data sets. ..so as I mentioned 10 sets of 20 points each. These data point would be provided continously. Ideally I would like to achieve the same results, but it seems that it may not be possible. Another solution would be to save the data until I have enough points ( to get a valid result) )and then apply the hpf.
But how many points would I need to achieve similar results?
Hope this explains what I am trying to do.

High pass filter sweeps

Dear all,
First I should say that I am relatively new to electronic music and mostly make rock. I do like to put synths in my music, and I am now getting more and more of a taste for adding more electronic effects too in to my recordings. What I am wondering is how to get a high pass sweep without losing volume when I cut those highs. When I automate it in the channel EQ, the volume starts off lower and gets higher. Now this is obviously going to happen, as I am cutting frequencies, so lowering the levels. How do people get a sweep that doesn't do that? I want the volume levels the same during the sweep, and I hear it done so often. Is it just a matter of automation with the volume too to get the levels even, or is there a plugin or a cheeky trick that does it? I have tried auto filter, but cannot get the effect I want. Thanks a lot in advance, all the best, Fred

Try using a unfiltered version of the string (or sound) which remains constant and couple this with a high version which "sweeps" the eq. Play them together - try with a lo-pass filter on the unfiltered version to get the sound of the "doubled-up" version right with the hi-passed string on top. Layering is probably the answer I think. Try using some compression on the hi-swept sound too.
Or alternatively, try using bandpass filters if you find a hi-pass filter too extreme and you still need more body. Use resonance too - this will make the sound frequencies which are currently at the "filter cutoff" point louder - as you sweep the cutoff up, the effect of increased resonance should be quite noticeable.
Best,
Mickey.

Use a High Pass Filter for multiple connections

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