LabVIEW 2014 Digital Filter Design Toolkit Readme

Version 14.0.0


June 2014


This file contains important information about the LabVIEW 2014 Digital Filter Design Toolkit, including installation instructions, new features, and known issues.


Overview

System Requirements

Installation Instructions

Product Security and Critical Updates

New Features

Known Issues

Accessing the Help

Finding Examples

Automating the Installation of NI Products

How to Use NI Software with Microsoft Windows 8.x

NI Software Support for Microsoft Windows Vista, Windows XP, and Windows Server 2003

Legal Information


Overview

The Digital Filter Design Toolkit includes the Digital Filter Design VIs and the Adaptive Filters VIs to provide a collection of digital filter design tools, including adaptive filter design tools, to supplement the LabVIEW Full Development System. The Digital Filter Design Toolkit helps you design digital filters and filter banks without requiring you to have advanced knowledge of digital signal processing or digital filtering techniques. With the Digital Filter Design Toolkit, you can design and analyze floating-point and fixed-point digital filters and filter banks. With the Digital Filter Design Toolkit, you also can design and analyze floating-point and fixed-point adaptive filters. You also can simulate fixed-point digital filters, including fixed-point adaptive filters.


Without prior knowledge about programming in LabVIEW, you can use the Digital Filter Design Express VIs to interact graphically with filter specifications to design appropriate digital filters and filter banks.


The Digital Filter Design VIs help you design the following filters and filter banks:


  • Digital finite impulse response (FIR) or infinite impulse response (IIR) filters—You can use the VIs to analyze the characteristics of the digital filter, change the implementation structure of the digital filter, and process data with the digital filter. In addition to the floating-point support, the Digital Filter Design VIs also help you create a fixed-point digital filter model, analyze the characteristics of the fixed-point digital filter, simulate the performance of the fixed-point digital filter, and generate fixed-point C code, integer LabVIEW code, or LabVIEW field-programmable gate array (FPGA) code for National Instruments FPGA targets.
  • Floating-point multirate digital filters—You can use the VIs to design a floating-point single-stage or multistage multirate filter, analyze the characteristics of the floating-point multirate filter, and process data with the floating-point multirate filter. In addition to the floating-point filter design, the Digital Filter Design VIs also help you create a fixed-point multirate filter, analyze the characteristics of the fixed-point multirate filter, simulate the behavior of the fixed-point multirate filter, and generate LabVIEW FPGA code from the fixed-point multirate filter for NI FPGA targets.
  • Filter banks—You can use the VIs to design a 2-band quadrature mirror filter (QMF) or M-band cosine-modulated filter bank, analyze the characteristics of a filter bank, decompose or reconstruct signals with filter banks, retrieve filter bank parameters, and create a filter bank from a prototype filter.

The Adaptive Filters VIs help you design a floating-point and fixed-point adaptive filter for different applications and with different adaptive filter algorithms. You can use the Adaptive Filters VIs to create an adaptive filter with the following adaptive algorithms:


  • Least mean squares (LMS) and the variants, such as normalized LMS, leaky LMS, normalized leaky LMS, sign LMS, and fast block LMS
  • Filtered-x LMS and normalized filtered-x LMS
  • Recursive least squares (RLS) and QR decomposition-based RLS (QR-RLS)

You can apply the adaptive filter that you create to applications like adaptive noise cancellation, adaptive echo cancellation, system identification, and so on. You also can create and implement a fixed-point adaptive filter on NI FPGA targets.


In addition to the graphical tools for digital filter design, the toolkit also provides Digital Filter Design MathScript RT Module functions that LabVIEW MathScript supports. These functions enable you to design filters in a text-based environment. You must install the LabVIEW MathScript RT Module to use the Digital Filter Design MathScript RT Module functions.


System Requirements

In addition to the system requirements for the LabVIEW Development System, the Digital Filter Design Toolkit has the following requirements:


  • LabVIEW 2014 Full or Professional Development System (32-bit)
  • At least 200 MB of disk space

Refer to the LabVIEW Readme for additional system requirements and supported operating systems for LabVIEW 2014.


Note  If you want to use the Digital Filter Design Toolkit to generate LabVIEW FPGA code for a fixed-point digital filter, you must install the LabVIEW FPGA Module and NI-RIO software on the host computer. Ensure that you install the FPGA Module and NI-RIO software before you install the Digital Filter Design Toolkit. If you already installed the Digital Filter Design Toolkit, uninstall the Digital Filter Design Toolkit before installing the FPGA Module and NI-RIO software.


Installation Instructions

You can install all of your LabVIEW products—including the Digital Filter Design Toolkit—using the LabVIEW 2014 Platform media. Refer to the LabVIEW Installation Guide on the LabVIEW Platform media for installation instructions and system requirements.


To request additional LabVIEW Platform media, refer to the National Instruments website.


Note  If you purchased this product with an NI Software Suite or NI Product Bundle, use the installation media that shipped with your purchase to install this product.


Product Security and Critical Updates

Visit ni.com/security to view and subscribe to receive security notifications about National Instruments products. Visit ni.com/critical-updates for information about critical updates from National Instruments.


New Features

The Digital Filter Design Toolkit 2014 provides Adaptive Filter VIs for you to design floating-point and fixed-point adaptive filters for different applications and with different adaptive filter algorithms.


Known Issues

You can access the software and documentation known issues list online. Refer to the National Instruments website for an up-to-date list of known issues in the Digital Filter Design Toolkit.


Accessing the Help

Refer to the LabVIEW Help, accessible from Help»LabVIEW Help, for information about the Digital Filter Design Toolkit.


Finding Examples

Select Help»Find Examples from LabVIEW to launch the NI Example Finder. Navigate to the Toolkits and Modules»Digital Filter Design folder and the Toolkits and Modules»Adaptive Filters folder to access the examples. You can modify an example VI to fit an application, or you can copy and paste from one or more examples into a VI that you create.


You also can find the examples for the Digital Filter Design Toolkit in the labview\examples\Digital Filter Design directory and the labview\examples\Adaptive Filters directory.


Automating the Installation of NI Products

You can automate the installation of most NI products using command-line arguments to suppress some or all of the installer user interface and dialog boxes. However, starting with the August 2012 releases (products using NI Installers version 3.1 or later), you may need to perform additional steps before or during a silent installation of NI software.


If the NI product you are installing uses Microsoft .NET 4.0, the .NET installer may run before any NI software installs and may require a reboot before the installation of NI software begins. To avoid a .NET reboot, install .NET 4.0 separately before you install NI software.


For more information about automating the installation of NI products, refer to the following KnowledgeBase articles:


How to Use NI Software with Microsoft Windows 8.x

When you install National Instruments software on Microsoft Windows 8.x, you will notice a few additional tiles in the Apps view, including shortcuts to NI application software products such as NI LabVIEW, Measurement & Automation Explorer (NI MAX), and NI Launcher.


Using NI Launcher

NI Launcher helps you find and launch installed NI products. It provides you with a method of finding NI products similar to the Start menu in previous versions of Microsoft Windows. To use NI Launcher, click the NI Launcher tile in the Apps view. NI Launcher launches the desktop and opens a menu containing a list of NI products. Click any NI product to launch it.


Note  NI MAX does not appear as a desktop shortcut when installed on Microsoft Windows 8.x. You can launch NI MAX either from the Apps view or from within NI Launcher.

Pinning Frequently Used Applications

For convenience, you can pin your most-used NI applications, such as MAX, to either the Start screen or the Taskbar on the desktop, as necessary:


Current ApplicationIcon LocationPin to Action
Windows 8.x DesktopDesktop TaskbarRight-click application and select Pin to Taskbar
Windows 8.x Desktop Start screenRight-click application and select Pin to Start
Windows 8.x Start screenDesktop TaskbarRight-click application and select Pin to taskbar from the menu bar on the bottom of the screen

Finding All Programs

If you want to find a particular application or related files, such as documentation files, from the Start screen, you can access all installed files from the Apps view. To get to the Apps view, right-click anywhere on the Start screen and select All apps (Windows 8) or click the down arrow on the bottom left of the screen (Windows 8.1).


For more information about NI support for Windows 8.x, visit ni.com/windows8.


NI LabVIEW Digital Filter Design Toolkit Drops Support for Microsoft Windows Vista, Windows XP, and Windows Server 2003 in 2016

National Instruments LabVIEW Digital Filter Design Toolkit will drop support for Microsoft Windows Vista, Windows XP, and Windows Server 2003 as of July 1, 2016. Versions of the Digital Filter Design Toolkit that ship after July 1, 2016 will not install or run on Windows Vista, Windows XP, or Windows Server 2003. For detailed information about NI application software product life cycles, visit ni.com/info and enter one of the following Info Codes:


Product Info Code
NI LabVIEWlifecycle
NI LabWindows™/CVI™cvi_lifecycle
NI Measurement Studiomstudiolifecycle
NI TestStandtslcp
NI DIAdemddlcp
NI SignalExpressselcp
NI VeriStandnivslifecycle

Legal Information

Copyright


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End-User License Agreements and Third-Party Legal Notices


You can find end-user license agreements (EULAs) and third-party legal notices in the following locations after installation:


  • Notices are located in the <National Instruments>\_Legal Information and <National Instruments> directories.
  • EULAs are located in the <National Instruments>\Shared\MDF\Legal\license directory.
  • Review <National Instruments>\_Legal Information.txt for information on including legal information in installers built with NI products.

U.S. Government Restricted Rights


If you are an agency, department, or other entity of the United States Government ("Government"), the use, duplication, reproduction, release, modification, disclosure or transfer of the technical data included in this manual is governed by the Restricted Rights provisions under Federal Acquisition Regulation 52.227-14 for civilian agencies and Defense Federal Acquisition Regulation Supplement Section 252.227-7014 for military agencies.


IVI Foundation Copyright Notice


Content from the IVI specifications reproduced with permission from the IVI Foundation.


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Patents


For patents covering the National Instruments products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents.