Capture Raw Signal From WiFi Card As Would A Sound Card
May 9, 2012
Is it possible to capture the raw signal from a WiFi card in the same way you can capture the signal from a sound card? (I already found code for working with a sound card and for drawing spectrograms) I'm wondering because it would make a cool radio-type project. I'd prefer a solution that integerates well with .net (VB or C#).My basic goal is to capture the ambient radio waves and build a primative "telescope" of sorts. Using the built in computer hardware is just the easiest way to accomplish this. If you have any other suggestions about how to accomplish this goal in a different way please post it as an answer also.
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Jun 27, 2011
i have windows app i want to disable the sound card and enable the sound card by using command button
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Jun 30, 2010
I'm just starting build a project that will must acquire digital/analogic signal input, elaborate them troght a software builded by me and depending on signal acquired and conditions put out digital/analog signal output.So I assume I have to buy a PCI signal acquisition card.Now, I'm working from time with vbnet and I feel good, can someone suggest me a kind of pci pcb as above descipted and explain how to programe it in order to keep in communication pci card with vbnet software to pass signal???
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Apr 15, 2010
I need to get the decibel level of sound being sent to the sound card (not the actual sound level the speakers are instructed to emit via volume level)There is next to no information i can find on the net to even access sound data. Could anyone point me in a direction for this? The OS will be vista/7.
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Feb 19, 2007
i am doing a final project in vb.net.i need to know how can i take and receive data from a sound card.
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Jun 15, 2011
I would like to be able to measure the frequency of a sine wave applied to the input of a "standard" Windows sound card system.I need to do this in near real-time (not by analyzing a wav file after the event) and I need to continuously measure every half-cycle of audio and store the results in some kind of buffer that I can read into a VB app. I have tried googling for this and it seems to be a very popular question but I have not found any really good answers. Does anyone know of a DLL that could do this? I wouldn't mind paying a reasonable sum for a commercial DLL if there is such a thing.
Another related requirement is to generate sine-waves - again this must be done in near real-time and it must be possible to change each half-cylce of the waveform. For example,I might need to generate a few half-cycles of 1500 Hz to be followed (with no break in the waveform) by half-a-cycle of 2300 Hz.
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Aug 12, 2009
I'm currently trying to get around developing an application that will alert me when process X is using my sound card.
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Nov 23, 2009
I want to create an application that can detect usb card reader device and when i swipe the card it should read.The below code WORKS PERFECTLY IN VB.But when i converted it to vb.net it is showing some problem.Below is the code for that.
[Code]...
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Dec 23, 2009
i want to read data from smart card using card reader.i need vb.net code help as well as total process that mean what dll/exe will be needed and how can i determine that the card is inserted or ejected from card reader?
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May 27, 2011
Is there a way to generate a pure tone (e.g. 440 Hz) for a specified period of time through the sound card without using having to find or make a separate .wav file for each tone.I tried using the "Beep" function, but while it produces the tone for a specified period, it sounds broken up into a (probably 500ms) time frame which repeats with an audible space between the repetitions.
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Dec 18, 2011
how to record sound from sound card ?
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Sep 8, 2009
I need a way of recording any sound that is played through the computer so say if the user was open up windows media player and play a song then he could click record on my application and it would capture whatever is being played. After that there would also need to be a save button so the can click save and the user can save the file as a .wav or .mp3 or whatever!
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Jun 22, 2010
I have a multi input capture card (Composit, s-video, ...) and I developed a program with avicap32.dll in vb.net to connect to a webcam. But I can not use this program to connect to composite input of my capture card.It seems the capture card has a default input.
Firstly, How can I change the default input? because I want to connect to compsite input.
Secondly, is there another way to connect to my capture card?
I've been googling but I could not find any code for vb.net or C#.net. They are all in C++ and I could not traslate them to vb.net
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May 14, 2012
I was wondering what sorta code you would you to check if audio is going though a sound card?I am designing a media player and I would like to show that audio is playing.
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Nov 17, 2011
how to capture audio output with directsound? i'd want to be able to save it as .wav, .mp3, or .wma file format.
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Sep 6, 2009
how to check if
- A specific sound card is in use;
- A specific process is using any sound card;
- A sound card's current volume output
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Oct 5, 2009
How can I find the mixer handle for a specific sound card?I'm trying to build an application that will control the sound mixer of a specific sound card but I'm completely stuck in the getting the handle part.
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Jul 7, 2009
how can implement smart card and private key stored in smart card by using vb.net
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Mar 19, 2009
how can implement smart card and private key stored in smart card by using vb.net
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Dec 21, 2009
i have to develop a ticketing package for a client...and he wants to use smart cards too...i would need to develop the package on a smart device i.e. a mobile application and will have to read the card on the device itself ...i have zeroed on the instrument from motorola. and an blue tooth connected printer to print the ticket.how to read the smart card ...i have searched a lot but have not found anything good.the smart card would contain the amt. balnce in it...and after the transaction i need to again enter the balance in the smart card...
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Sep 2, 2011
I want to get the wireless signal strength from adapter on Windows CE, VB.Net, Visual studio 2008.I believe opennetcf.net library has to be used.
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Jan 18, 2009
I was wondering if there is an available script or code in VB that could measure the signal strength of routers. I need an actual number in decibels.
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Nov 22, 2007
I have 3 AP and I want design program to get the SSID & signal strength &BSSID(MAC Adress) for each APi found the some functions to obtain the SSID & signal strength for one AP ,,, i using timer to update every 2 second
SSID
Public Sub SSID()
Try
[code]......
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Jun 20, 2011
I have a question about of capture sound function, someone have a code example for visual basic 2010 in windows 7?, I tried using mcisendstring function but the sound quality, is poor.
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Dec 13, 2010
I am trying to capture a tv dvb-s signal via vb.net since a long time now.I have tried to get it work with the Microsoft examples, but no success till yet.I had success with analog tv tuning, but digital tuning is still far away, also I don't find any examples with dvb-s and vb.net or c#.
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Feb 13, 2012
I have been looking for like 3 hours trying to find a dll or anything to make a simple cards game, but everything I find is oriented to C.
In this page A FreeCell game using Cards.dll - CodeProject� they talk about just what I want, but I cannot make it work in Visual Studio 2008 using Visual Basic.net, I don�t know if that has anything to do with the Vista OS I am using.
In the page I mention the author says "There are many good articles on the net on how to use the Cards dynamic link library" and I am sure the good articles are there, but my good luck has make me looping around the same nonsense results so I end up with nothing after 3 hours search.
The game I want to make is just something for a project we must do in class, how to start making a cards game fast and simple. If someone knows about a cards dll that works fine with vbnet, that someone would be my new hero.
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Jul 10, 2009
I am trying to make a card game which can be played over the internet between users. I have already downloaded the cardGame Starter kit for Visual Basic. I plan to modify it to the game I want.I had worked with Sockets (Client-Server App) a long time ago for a small chat program for computers connected in LAN.I had the following questions:How should I start off with this Application, should I first just concentrate on making the game and then progress to trying to figure out how to make it playable over the internet?
Or should I do it the other way round?Can I attain my objective using Sockets? or do I have to use something else?Is there a tutorial available to start me off? (I Googled and "Bing"ed it but to no avail)
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Oct 5, 2011
Now I try to change key of Mifare Card 1K with ACR128 reader and I push key with
[Code]...
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Oct 18, 2011
I am looking for a solution to implement Credit Card processing to a POS system I have written. I have been coding VB for about 7 years but never had a need to process credit cards.
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Aug 3, 2010
I'm trying to disable/enable a NIC on my local machine.
Here is my code:
Dim
colAdapters As
New ManagementClass("Win32_NetworkAdapter")
[Code]...
it always returns with this error: Invalid methodparameters
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