.wav file error

[naveen bhogadi]

Hi ,

i am trying to transmit the voice signal and receive the voice signal, at the output i am getting the error. can anyone resolve this

i tried with the sine wave its working for voice  i am getting the error

voice signal is .wav file

[Brian_P]

A couple questions for you.

Where exactly and in which VI is the error occuring?

What is the exact error that you are getting? (Screen Shot)

What format is the the sine wave in and what format are you expecting?

Brian Ph

[naveen bhogadi]

what i am trying to do  is

I took sine wave and noise  as input , transmitted and at the output i filtered it out, it works.

now i took .wav file as input instead of sine wave and adding noise  at the input by  transmitting these  the noise  output the should be filtered.

[Jake_G]

I'm not sure if the zip file contained the correct decryption sub VI, because I had to rewire the inputs, but I did get it to work.  If your version is correct and the decryption VI is wired up, check to make sure the file path to the .wav file is accurate.  When I ran it, the default value did not exist on my machine.  When I changed the path to another existing .wav file on my machine, I got no errors, and the filtered signal appeared as expected.  In case you were curious, here is the code that I updated. 

[naveen bhogadi]

Can any body change from  labview 10.0 version to labview 9.0 version

thank you

[Jake_G]

Hey,

I didn't realize you were running LabVIEW 2009 so I went ahead and made the same changes in that version. 

This folder should work with LV 2009.  Please see above for the list of changes and possible problems.

[naveen bhogadi]

Thank u very much

I have a question

can i add noise at the input(to the .wav file) and filter the noise at the receiver by using the filter does it work

thank u once again

[Jake_G]

Yes, you can.  There are many types of filtering though.  If you go to the NI Example Finder by clicking on Find Examples in LabVIEW, then browsing to the folder Analyzing and Processing Signals --> Filtering and Conditioning, there should be many useful examples.

[naveen bhogadi]

Can any one answer me or refer me a book

How sensitive are digital signals that don't use security to those that do use security(crptography)?   

Take a look at state of the art technologies that handle bit errors in transmissions - is there one for secure systems or do you need a more accurrate filter design that produces no errors?   Comparing and contrasting the two can lead to part of a conclusion.

The time period that it takes for the security to execute and how fast your filter needs to be in order to avoid dropping samples.

[Brian_P]

This question should be posted in a new thread in order to keep the forums from getting all jumbled and confusing.