Using PXI to Build a High-Performance MEMS Microphone Testing System

The demand for increasing microphone signal quality from handheld mobile devices has led to the development of microphone signal processing technologies such as: HD audio, noise cancellation, active noise cancellation, beam forming, directional reception, stereo sound field reconstruction, and speech recognition. As well, devices incorporating multiple microphones are becoming more and more popular. Several newly released smart phones now integrate multiple MEMS (Micro Electrical-Mechanical System) microphones for improved background noise cancellation. All flagship smart phone models in introduced in 2015 featured three or more MEMS microphones to support HD audio, ambient noise cancellation, noise filtering, directional reception and speech recognition. Popularity of MEMS microphones is expected to grow.

Posted in: White Papers, Electronics, Data Acquisition, Sensors, Test & Measurement

Introduction to Machine Vision

A guide to automating process & quality improvements

Get the basics of how machine vision technology works and why it's the right choice for automating process and quality improvements. The Introduction to Machine Vision whitepaper is the first step to understanding, what is machine vision, what kind of problems does it solve, what components do you need to build a vision system, how to get the most out of your vision system, and more. Read this whitepaper to see why automated inspection is vastly superior to manual techniques.

Posted in: White Papers, Machine Vision, Automation

Boosting Machine Vision with Built-in FPGA Image Preprocessing

Since imaging processing tasks can consume major CPU resources in machine vision applications, increasing processing performance within size constraints is, accordingly, a common challenge for solution providers. The following discusses the efficacy of FPGA in addressing such performance shortcomings, presents the image processing tasks most suitable for FPGA, and compares the capabilities of CPU and FPGA in operation. A built -in FPGA image preprocessing solution supporting machine vision app lications is then presented.

Posted in: White Papers, Imaging, Optics, Photonics, Automation, Robotics

Thermoelectric Cooling: How Does It Work? Why Should You Choose It?

There are many places one can go to get an outline on the pros and cons of different methods for enclosure cooling. Although we will briefly touch on them here, this is really an in-depth article on how to choose a Peltier (thermoelectric) air conditioner, once you have committed to the technology.

Posted in: White Papers, White Papers, Electronics & Computers

Forging as a Viable Alternative to 3D Printing of Non-Ferrous Metal Parts

3D printing is an additive manufacturing (AM) technology used to build objects layer-by-layer directly from digital data. It has surged in popularity in recent years because it enables fast and flexible product design and prototyping, and can be used to produce small numbers of parts cost-effectively, and create complex parts that are difficult or impossible to make otherwise.

Posted in: White Papers, Aeronautics, Defense, Manufacturing & Prototyping

Plastic Bearings Have Staying Power

Plastic bearings are strong enough to outperform and outlast metal in countless applications, however, they are often not considered a viable choice in the engineering community due to the common misconception that plastic is inferior or weaker compared metal. Uncover common misconceptions and learn the true reliability of tribologically-optimized plastic bearings in this whitepaper from the motion plastic experts.

Posted in: White Papers, Materials, Plastics

How the Laser, Optic, & Photonic Industries Benefit from Electropolishing

Improve precision and cleanliness with an enhanced surface finish.

Like other industries that utilize electropolishing to finish metal components, there are many benefits associated with electropolishing metal components used in photonics, optics or laser applications.

Posted in: White Papers, Coatings & Adhesives, Materials, Medical, Optics, Photonics

Electropolishing Prepares/Pre-Cleans Parts Properly Prior To Penetrant Testing

It is common, especially in the aerospace industry, for parts that are fracture critical to be Liquid Penetrant Inspected (LPI) prior to installation. Also known as Dye Penetrant Inspection (DPI) or simply Penetrant Testing (PT), this method is used to detect micro-cracks or other defects that could serve as an initiation site for failure. In order to properly execute a penetrant test, the surface of a metal part must be thoroughly clean of any debris, smeared metal, or any amorphous layer that may be hiding a hairline crack thus yielding a false reading.

Posted in: White Papers, Aeronautics, Defense, Coatings & Adhesives, Materials

Customized Masking Solutions Don’t Require Customized Masks

If you’re masking with conventional methods, you know the challenges associated with complex design configurations and need for reliable protection from aggressive chemical processes, high-temperature coatings, or surface treatment processes. Even minute gaps or voids in coverage can result in edge-lift and leakage that can significantly compromise protection and adversely impact your bottom line.

Posted in: White Papers, Materials

Beyond Telematics: IoT

This Bsquare whitepaper explains how manufacturers of commercial trucking and heavy construction equipment can move beyond simple telematics in order to increase asset uptime while reducing operating costs through comprehensive Internet of Things (IoT) technology.

Posted in: White Papers, Electronics & Computers

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