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util_BitstreamFromRandom.vi

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

Summary: Build a LabVIEW subVI to generate a bitstream from a random number generator.

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: util_BitstreamFromRandom.vi

  • Description: Generate a bitstream from a random number generator. The probability of generating a 1 can be controlled, as can the value of the random number seed.
  • Category: General-purpose utility ("util" prefix)

Inputs (Controls)

  1. length (128) -- I32
  2. ones probability (0.5) -- DBL
  3. seed (-1) -- I32

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

Outputs (Indicators)

  1. bitstream out -- 1-D Boolean array

Required Behavior

  • The bitstream length defaults to 128 bits.
  • A "seed" value of -1 indicates that a new set of random bits should be generated each time the subVI is called. Positive seed values will cause the same pattern to be generated each time, with the particular seed value selecting a different pattern.

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 util_BitstreamFromRandom.vi
Figure 1 (subVI_util_BitstreamFromRandom-vi.htm)

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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.

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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