lowpass filter

[Ben]

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rakornet wrote:

I created a typedef for a subVI and would like to have a bundle outside the subVI to use as input to the subVI.  I couldn't seem to find any way to create a bundle of the custom typedef type.  Right now, I am using a workaround:  I created a constant of the custom typedef type and then am using the Bundle By Name function.  This seems to work, but I would like to be able to get rid of the constant completely and just be able to build a bundle of the custom typedef type directly.  Is this possible?

Thanks

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You already recieved good replies from others but I'd like to mention that you found the right way to pass your data. It ensures you will not have to manually update your code if the cluster def changes. You may want to review my Nugget on Type Definitions for more ideas on this topic.

have fun,

Ben

[autumn2014]

hello all

i'm trying to implement a single sideband modulation in LABVIEW, using a DSB (double sideband) signal and a filter(lowpass or highpass), the problem i can't get an ideal or an almost ideal filter, and the spectrum i obtain is always wrong here is a screenshot of my work , thanks

[johnsold]

You should start a new thread. Your question has nothing to do with this thread.  See new thread here.

When you start your new thread, please attach the actual VI with default values saved for the controls. We cannot tell what is inside the Express VIs from a picture - the configuration of the filter for example.

1. Adding two signals does NOT modulate them.

2. Filters need to be of very high order and of a type with very steep band edges to have any chance of working for SSB. Filter-type SSB transmitters often use crystal filters to get sufficiently sharp cutoff.

Lynn

[autumn2014]

ok here is the VI file , now it implements DSB cz the filter isn't working properly,or there something wrong in the its parameters, thanks for help