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NI LabVIEW 2011 Digital Filter Design Toolkit LV2011DFDT数字滤波器设计工具包32位版
数字滤波器工具包Digital Filter Design Toolkit，在LabVIEW安装时是不包含的，需要再单独下载安装。DFDT工具包在DFDT2017及以前的版本中，只有X86系统下的32位版本，从DFDT2018以后才有X64系统下的64位版本。如果需要使用64位的版本，请将LabVIEW环境升级到2018以后。
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NI LabVIEW 2011 Digital Filter Design Toolkit LV2011DFDT数字滤波器设计工具包32位版
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LabVIEW 2011 Digital Filter Design Toolkit Readme
Version 11.0.0
June 2011
This file contains information to introduce you to the LabVIEW Digital Filter Design Toolkit. This file also provides you with help resources you can use while working with the toolkit. The file contains the following information that you need to understand.
Overview
System Requirements
Installation Instructions
Accessing the Help
Finding Examples
Known Issues
Bug Fixes
Overview
The LabVIEW 2011 Digital Filter Design Toolkit is the upgrade version of the LabVIEW 2010 Digital Filter Design Toolkit. The Digital Filter Design Toolkit provides a collection of digital 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. You also can simulate fixed-point digital 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 Toolkit provides VIs that you can use to design a digital finite impulse response (FIR) or infinite impulse response (IIR) filter, 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 Toolkit provides a set of VIs that you can use to 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 a specific fixed-point target.
The Digital Filter Design Toolkit includes VIs for floating-point multirate digital filter design. 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 toolkit also provides a set of VIs that you can use to 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-RIO targets.
The Digital Filter Design Toolkit includes VIs that you can use to design and analyze 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.
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
The computer you are using must meet the following minimum system requirements to run the Digital Filter Design Toolkit:
Note: If you want to use the LabVIEW 2011 Digital Filter Design Toolkit to generate LabVIEW FPGA code for a fixed-point digital filter, you must install the LabVIEW 2011 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.
You can run the Digital Filter Design Toolkit on the following operating systems:
Windows 7 (32-bit and 64-bit)
Windows Vista (32-bit and 64-bit)
Windows XP Service Pack 2 or later
Windows Server 2003 R2 (32-bit)
Windows Server 2008 R2 (64-bit)
Note: The Digital Filter Design Toolkit does not support Windows NT/Me/2000/98/95 or the Windows Server non-R2 editions.
Installation Instructions
You can install all of your LabVIEW products—including the Digital Filter Design Toolkit—using the LabVIEW 2011 Platform DVDs. You can find installation instructions for the Digital Filter Design Toolkit along with activation instructions in the following locations:
LabVIEW Release Notes, which are available in your LabVIEW software kit.
LabVIEW 2011 Platform DVDs Readme, which is available on the top-level of LabVIEW Platform DVD 1.
To request additional LabVIEW 2011 Platform DVDs, refer to the National Instruments Web site.
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.Accessing the Help
Refer to the LabVIEW Help, accessible by selecting Help»LabVIEW Help from the pull-down menu in LabVIEW, for information about using the Digital Filter Design Toolkit. On the Contents tab of the LabVIEW Help, choose Toolkits»Digital Filter Design Toolkit. This book contains:
Concepts—An overview of how to use the Digital Filter Design Toolkit.
How-To—A step-by-step tutorial on designing floating-point and fixed-point filters using the Digital Filter Design Toolkit.
VIs—Detailed information about the Digital Filter Design VIs.
MathScript RT Module Functions—Detailed information about the Digital Filter Design MathScript RT Module classes of functions and commands that LabVIEW MathScript supports.
Finding Examples
LabVIEW examples for the Digital Filter Design Toolkit are located in the labviewexamplesDigital Filter Design folder. 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 example VIs using the NI Example Finder. Select Help»Find Examples to launch the NI Example Finder. You also can click the arrow on the Open button on the LabVIEW dialog box and select Examples from the shortcut menu to launch the NI Example Finder.
Use the Browse or Search page of the NI Example Finder to find an example VI. In the Browse page, the Digital Filter Design Toolkit examples are located in the Toolkits and Modules»Digital Filter Design folder.
Known Issues
You can access the software and documentation known issues list online. Refer to the National Instruments Web site for an up-to-date list of known issues in the Digital Filter Design Toolkit.
Bug Fixes
The following items are the IDs and titles of a subset of issues fixed in the LabVIEW 2011 Digital Filter Design Toolkit. If you have a bug ID, you can search this list to validate that the issue has been fixed. This is not an exhaustive list of issues fixed in the current version of the Digital Filter Design Toolkit.
| Bug ID | Fixed Issue |
| 234017 | The interstage word length does not adapt to source in Nstage Mrate Filter IP Generator |
| 287361 | DFDT IP Generator VIs cannot generate code according to input word length |
| 293496 | DFDT Pole-Zero Placement Express VI configuration dialog box does not remember Coordinates settings |
Important Information
Copyright
© 2011 National Instruments Corporation. All rights reserved.
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.
National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
Trademarks
LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks for other National Instruments trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective companies.
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.
