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


Noise Analysis in Precision Analog Designs

There are articles explaining component-level noise analysis for amplifiers or for analog-to-digital converters (ADCs), but very few that explain how to budget noise or analyze noise from the system level. This paper reviews the basics of noise analysis in precision designs, relates those calculations to system-level specifications such as sensitivity, dynamic range, and resolution, and answers some of the big questions about low-noise design.

Posted in: White Papers, Electronic Components, Electronics, Electronics & Computers, Semiconductors & ICs


UL and VA Sign CRADA for Medical Device Cybersecurity Standards

The U.S. Department of Veteran Affairs (VA), Washington, DC, and UL (Underwriters Laboratories), Northbrook, IL, a global safety science organization, have signed a Cooperative Research and Development Agreement (CRADA) for current and emerging medical devices cybersecurity standards and certification approaches.

Posted in: MDB, News, Electronic Components, Electronics, Electronics & Computers, FDA Compliance/Regulatory Affairs, Medical


Cheaper, Simpler Nanomaterial for Wearable Devices

An international team of researchers from the University of Illinois at Chicago and Korea University say that they have developed an ultrathin film that is both transparent and highly conductive to electric current, while also being cheaper and simpler to produce than current materials.

Posted in: MDB, News, Electronic Components, Electronics, Materials, Diagnostics, Medical, Patient Monitoring, Surgical Robotics/Instruments, Nanotechnology


Wearable System to Predict, Prevent Asthma Attacks

A team of engineers at North Carolina State University has developed an integrated, wearable system called the Health and Environmental Tracker (HET), that, they say, can monitor a user’s environment, heart rate, and other variables to predict and prevent asthma attacks. They plan to begin testing the system on a larger subject population this summer.

Posted in: MDB, News, Electronic Components, Electronics, Diagnostics, Medical, Patient Monitoring, Rehabilitation & Physical Therapy


Diabetes Technology Society Develops Cybersecurity Standard for Devices

The Diabetes Technology Society recently announced its new cybersecurity standard for interconnected diabetes devices called DTSec. The standard specifies performance requirements utilizing the ISO/IEC 15408 framework used to define security requirements on “smart” medical devices. DTSec is initially targeted for networked devices, such as continuous glucose monitors and wireless insulin pumps, but, the group says there is nothing inherent in it to preclude its application to any other medical product or component.

Posted in: MDB, News, Electronic Components, Electronics, Diagnostics, Drug Delivery & Fluid Handling, FDA Compliance/Regulatory Affairs, Medical, Patient Monitoring


3D Printing Metals Suspended in Midair

A team of engineers at Harvard’s Wyss Institute for Biologically Inspired Engineering and John A. Paulson School of Engineering and Applied Sciences (SEAS) say that a new form of 3D printing and laser annealing of conductive metallic inks without supports could lead to customized electronic and biomedical devices.

Posted in: MDB, News, Electronic Components, Electronics, Electronics & Computers, Manufacturing & Prototyping, Rapid Prototyping & Tooling, Medical


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