Skip to content Skip to navigation

Connexions

You are here: Home » Content » regen_Sampler.vi

Navigation

Lenses

What is a lens?

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

This content is ...

In these lenses

  • LabVIEW Digital Communications display tagshide tags

    This module is included inLens: Analog / Digital Communications with National Instruments LabVIEW
    By: Sam ShearmanAs a part of collections: "SubVI Specifications for "Communication Systems Projects with LabVIEW"", "Communication Systems Projects with LabVIEW"

    Comments:

    ""Communication Systems Projects with LabVIEW" features ten projects that draw upon a library of over 40 subVIs constructed as part of the project activities. Each module in this manual completely […]"

    "Starting point collection that gathers all modules from this course"

    Click the "LabVIEW Digital Communications" link to see all content selected in this lens.

    Click the tag icon tag icon to display tags associated with this content.

Recently Viewed

This feature requires Javascript to be enabled.

Tags

(What is a tag?)

These tags come from the endorsement, affiliation, and other lenses that include this content.
 

regen_Sampler.vi

Module by: Ed Doering. E-mail the authorEdited By: Sam Shearman, Erik Luther, Brett Hern

Summary: Build a LabVIEW subVI to sample a signal at selected instants in time.

Table 1
LabVIEWtop.png This module refers to LabVIEW, a software development environment that features a graphical programming language. Please see the LabVIEW QuickStart Guide module for tutorials and documentation that will help you:
• Apply LabVIEW to Audio Signal Processing
• Get started with LabVIEW
• Obtain a fully-functional evaluation edition of LabVIEW

Note:

Visit LabVIEW Setup to learn how to adjust your own LabVIEW environment to match the settings used by the LabVIEW screencast video(s) in this module. Click the "Fullscreen" button at the lower right corner of the video player if the video does not fit properly within your browser window.

LabVIEW SubVI: regen_Sampler.vi

  • Description: Sample a signal at selected instants in time. The signal input is a discrete-time sampled signal that represents an "analog" signaling waveform. The sampling instants are indicated by a Boolean array of the same length as the signal input. A user-defined delay can be applied to shift the sampling instants by a fixed amount.
  • Category: Bitstream regeneration ("regen" prefix)

Inputs (Controls)

  1. signal in -- waveform
  2. sampling instants -- 1-D Boolean array
  3. delay [samples] (0) -- I32

Parentheses ( ) indicate default value; square brackets [ ] designate units.

Outputs (Indicators)

  1. sampling signal out -- 1-D array of DBL
  2. actual sampling instants -- 1-D Boolean array

Required Behavior

  • sampled signal out contains the subset of values from signal in that match the index values of the T-valued elements of sampling instants. sampling instants is assumed to be of the same length as signal in. Expressed another way, the Boolean array sampling instants contains T (true) values at each time that signal in is to be sampled. The output sampled signal out therefore contains the resulting samples.
  • The delay value adds a constant shift to the position of the sampling instants. The delay amount defaults to zero; a positive value delays the sampling instants and a negative value advances the sampling instants.
  • The actual sampling instants is a copy of the input sampling instants with the delay value applied.

LabVIEW Coding Tips

View the screencast video in Create a SubVI in LabVIEW to learn the mechanics of subVIs.

Refer to the Figure 1 screencast video for LabVIEW coding tips and techniques specific to this subVI.

Figure 1: [video] LabVIEW coding tips and techniques for regen_Sampler.vi
Figure 1 (subVI_regen_Sampler-vi.htm)

Content actions

Download module as:

PDF | EPUB (?)

What is an EPUB file?

EPUB is an electronic book format that can be read on a variety of mobile devices.

Downloading to a reading device

For detailed instructions on how to download this content's EPUB to your specific device, click the "(?)" link.

| More downloads ...

Add module to:

My Favorites (?)

'My Favorites' is a special kind of lens which you can use to bookmark modules and collections. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need an account to use 'My Favorites'.

| A lens I own (?)

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks