All items tagged with test and measurement (387)

COMSOL and Klippel, Integration of Simulation and Measurement Data

August 4, 2023 by Roger Shively

COMSOL and Klippel, Integration of Simulation and Measurement Data

Modeling and Simulation and Measurement systems evolved significantly in the past decade. Important progress is now bridging the gap between COMSOL simulation and Klippel measurement data, Roger Shively reports after returning from Orlando, FL, where we attended another edition of the ALTI Expo & Conference (June 11-13, 2023). This article summarizes the content covered in a very important session as part of the APDA-ALTI Education Symposium 2023.

Fresh From the Bench: RødeTest FuzzMeasure Audio and Acoustic Measurement Software

July 26, 2023 by Luke McCready

Fresh From the Bench: RødeTest FuzzMeasure Audio and Acoustic Measurement Software

This audio measurement software creation from Canadian software designer Chris Liscio was sold to Røde in 2018. FuzzMeasure is the very first product of the new RødeTest division of Røde Microphones, a subsidiary of Freedman Electronics, also the owner of Aphex, Event Electronics, and SoundField brands. FuzzMeasure audio measurement software stands out for its high-quality graphs and for tucking an immense amount of control into a sleek, minimal interface. This article was originally published in audioXpress, May 2020.

HEAD acoustics ViBRIDGE: Holistic Testing of In-Ear Headsets with Bone Conduction Sensors

July 26, 2023 by audioXpress Staff

HEAD acoustics ViBRIDGE: Holistic Testing of In-Ear Headsets with Bone Conduction Sensors

With the availability of the HEL/HER 4.4 ViBRIDGE Flexible Pinna for HMS II.3/5, the industry as gained a vital testing tool for in-ear headset designs that utilize bone conduction sensors. Evaluating these systems is vital to optimize near-end structure-borne sound to improve speech quality in the presence of background noise, improve echo cancellation, and double-talk performance. The unique technology developed by HEAD acoustics is being enthusiastically embraced by the industry.

Book Review: Learning Audio Testing and Measurements

July 12, 2023 by Jan Didden

Book Review: Learning Audio Testing and Measurements

For those who need to refresh their knowledge or learn about audio test and measurements, Jan Didden reviews a great - and big! - book on the topic. Audio Tests & Measurements by Igor S. Popovitch is one of the many self-published works by this proficient writer based in Australia, also the author of several popular books on vacuum tube amplifiers. This particular book runs about 180 pages, but that is deceiving as the book’s format (A4 size) is about twice the size of most soft cover books.

PCB Piezotronics Adds Miniature ICP Triaxial Accelerometers with TEDS

June 30, 2023 by audioXpress Staff

PCB Piezotronics Adds Miniature ICP Triaxial Accelerometers with TEDS

PCB Piezotronics introduced new TLD356A01 and TLD356A03 Miniature ICP Triaxial Accelerometers with TEDS. These new models are upgrades to PCB's current 356A01 and 356A03 models with the addition of TEDS functionality. The new triaxial sensors are primarily used to measure vibration inside devices, where space is restricted and are highly valued for automotive systems development, modal and structural analysis, and general purpose vibration testing.

imc Test & Measurement Launches New Ultimately Flexible Data Acquisition System imc ARGUSfit

June 13, 2023 by audioXpress Staff

imc Test & Measurement Launches New Ultimately Flexible Data Acquisition System imc ARGUSfit

imc Test & Measurement, a brand of Axiometrix Solutions, launched a new modular data acquisition system. The imc ARGUSfit base unit and additional amplifier and fieldbus interface modules, such as CAN FD, can simply be clicked together providing ultimate flexibility in vehicle and machine testing and monitoring. With this modularity, the imc ARGUSfit can be perfectly tailored to changing test environments, and the extremely compact size makes it ideal for applications in confined spaces.

You can DIY! Build an Audio Dummy Load

May 25, 2023 by Gary Galo

You can DIY! Build an Audio Dummy Load

An audio load is an essential piece of test equipment for any audio electronics workshop. Having created the very popular Heathkit ID-5252, more than 35 years ago, Gary Galo decided to design a new option for everyone to build now. The ID-5252 contains four 8Ω, 60W power resistors. The biggest limitation of the Heathkit load is power handling. Series and parallel combinations can be used to produce various resistances and power levels — up to 240W at 8Ω, using all four resistors. But, simultaneously testing both channels of a high-powered amplifier requires two ID-5252 units. Fortunately, the raw parts for building an audio load are easy to find.

HEAD acoustics Announces Management Changes Following Hans Gierlich's Retirement Announcement

May 12, 2023 by audioXpress Staff

HEAD acoustics Announces Management Changes Following Hans Gierlich's Retirement Announcement

After 34 years with HEAD acoustics, Dr.-Ing. Hans Wilhelm Gierlich, the company's Technical Director and Head of Research in the Telecom Division, is retiring. At the same time, Aulis Telle, Technical Managing Director for Sound, Vibration and Perception is leaving the company. In response, HEAD acoustics confirmed two managing director positions resulting from an updated organizational structure with the appointment of Anne Geller-Gravez as Managing Director Sales and Marketing, and Matthias Wegerhoff as the new Technical Managing Director.

Practical Test & Measurement: REST for Automated Test and Measurement

May 10, 2023 by Matt Taylor

Practical Test & Measurement: REST for Automated Test and Measurement

This article is a great introduction to the use of web interfaces, and embracing web standards for automated testing of audio equipment, fundamentally exploring the possibilities of REST - which stands for Representational State Transfer, a widely accepted set of guidelines for creating reliable web APIs. Written by the founder of Seattle, WA-based QuantAsylum, this contributed piece advocates an open-design philosophy for controlling and querying things via REST, and leveraging the know-how of millions of developers. This article was originally published in audioXpress, March 2022.

HEAD acoustics Introduces Solutions for Bluetooth LE Audio Testing

May 9, 2023 by Joao Martins

HEAD acoustics Introduces Solutions for Bluetooth LE Audio Testing

LE Audio is an entirely new Bluetooth implementation introducing multiple exciting new opportunities for audio manufacturers, but also raising completely new challenges. As a leading source for audio measurement solutions, HEAD acoustics is updating its solutions to allow testing new Bluetooth LE Audio technologies. One of those is Auracast broadcast audio, which now can be fully tested and optimized with a HEAD acoustics labCORE test frontend.

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