All items tagged with test and measurement (386)

GRAS Launches EQ 40PM EQset Miniature Production Line Measurement Microphone

February 15, 2023 by audioXpress Staff

GRAS Launches EQ 40PM EQset Miniature Production Line Measurement Microphone

GRAS Sound & Vibration announced a new miniature production line microphone, which is the first with the recently announced GRAS EQset technology designed to reduce the risk of measurement errors. The new EQ 40PM EQset, a short 20kHz pressure microphone with a dynamic range from 30dB (A) to 120dB, and the same dimensions as traditional Production Line microphones, is aimed at increasing efficiency and improving test accuracy in the consumer audio and telecom space.

HEAD acoustics Introduces ViBRIDGE Holistic In-Ear Headset Testing Solution

February 14, 2023 by Joao Martins

HEAD acoustics Introduces ViBRIDGE Holistic In-Ear Headset Testing Solution

As many audioXpress readers already learned from reading the article by Hans W. Gierlich on the Benefits of Using Structure-Borne Sound in Headset Signal Processing, HEAD acoustics created a complete test solution for in-ear and headset devices using bone-conduction sensors. There are good reasons for developers and manufacturers to explore the use of bone-conduction sensors and test them with the new ViBRIDGE solution.

audioXpress March 2023 Test and Measurement Issue Now Available!

February 10, 2023 by audioXpress Staff

audioXpress March 2023 Test and Measurement Issue Now Available!

audioXpress March 2023 offers an overview of the latest solutions and trends in audio measurement. Stuart Yaniger reviews the new Echo AIO modular audio test system, Philipp P. Klose writes about measurements in automotive audio environments, and Steve Temme shares his knowledge on audio testing in the production line. René Christensen explores Lumped Element Modeling of Transducers, Chuck Hansen expands the topic of power transformer losses, and Ethan Winer concludes his two-part article about Modern PCB Design Practices.

Audio Engineering Society Requests Expressions of Interest in AES75 Standard

February 6, 2023 by Audio Engineering_Society

Audio Engineering Society Requests Expressions of Interest in AES75 Standard

The Audio Engineering Society announced the adoption and publication of the AES75 standard for acoustics - "Measuring loudspeaker maximum linear sound levels using noise - in March of 2022. The AES SC-04-03-A task group is currently in the process of publicizing the 2022 AES75 standard and has issued an industry appeal of support from audio manufacturers, audio test and measurement solutions manufacturers, and audio measurement services providers.

New EQset Microphone Technology From GRAS Sound & Vibration

February 1, 2023 by audioXpress Staff

New EQset Microphone Technology From GRAS Sound & Vibration

GRAS introduced a new technology aimed at increasing efficiency and improving test accuracy in the consumer audio and telecom space. The new GRAS EQset Microphone technology is a new advancement that guarantees fixed sensitivity and a flat response curve across all frequencies in every EQset-enabled microphone. Essentially the new EQset technology introduces an equalized microphone, with a flat response curve and uniform fixed gain out of the box, vastly reducing the risk of measurement errors.

Practical Test & Measurement: The Benefits of Using Structure-Borne Sound in Headset Signal Processing

January 18, 2023 by Hans W. Gierlich

Practical Test & Measurement: The Benefits of Using Structure-Borne Sound in Headset Signal Processing

This article looks at the practical test and measurement of bone conduction technology, as used in product development for headsets and in-ear devices. It showcases new possibilities for manufacturers to better evaluate device performance, since no appropriate test equipment and methods were commercially available until now. The approach, complements a Head-and-Torso Simulator (HATS) with an actuator capable of generating structure-borne sound in the artificial ear. This way, a realistic simulation of the human structure-borne voice signal for in-ear headsets is possible.. This article was originally published in audioXpress, January 2023.

Simplify Engineering - Building a Collaboration Platform for System Engineers That Specialize in R&D and Manufacturing

December 8, 2022 by Joshua Levy

Simplify Engineering - Building a Collaboration Platform for System Engineers That Specialize in R&D and Manufacturing

I'm a hardware engineer with over ten years of experience, based in Southern California. I've worked on products like the Amazon Alexa and Meta Oculus, and I have grown frustrated with the current processes and inefficiencies of the consumer electronics industry. This is why I created The Lyceum, an online collaborative software that facilitates hardware system engineering research & development and manufacturing by automating data-intensive tasks, keeping a track record of historical technical data, and offering tools for online group work.

Voice Coil December 2022 Improves Loudspeaker Measurements

November 29, 2022 by Joao Martins

Voice Coil December 2022 Improves Loudspeaker Measurements

Voice Coil December 2022 features an updated directory of Measurement Microphones Vendors, Mike Klasco writes about how to Enhance Low-Frequency Performance, and Vance Dickason reminds us that there is a more realistic way to map speaker resonances. Test Bench characterizes two tweeters from Beyma's new Near and Mid Field (NMF) series: the T-25M 1" aluminum/magnesium alloy metal dome tweeter, and the similar T-25S 1" silk dome tweeter.

Audio Precision Updates APx500 Measurement Software to Version 8.0

November 7, 2022 by audioXpress Staff

Audio Precision Updates APx500 Measurement Software to Version 8.0

Audio Precision released version 8.0 of its APx500 Measurement Software. Significant test time savings and much faster reporting of important measurements are the key features of this upgrade, which also adds an improved Bose SoneTrac method for Rub & Buzz measurements. Version 8.0 features software performance optimizations that reduce unnecessary computation and speed up sequence execution. This results in much faster reporting of important measurements such as THD+N.

HEAD acoustics Implements Alexa ACAR Testing

October 17, 2022 by Joao Martins

HEAD acoustics Implements Alexa ACAR Testing

Following the availability of the labCORE extension module coreIP-Alexa, specifically created for measurement and validation of the user experience using voice on Alexa-built-in devices, HEAD acoustics now announced a comprehensive Alexa Communications Audio Requirements (ACAR) implementation that enable developers to leverage the full speech and communication potential of Alexa-built-in devices when performing Alexa-to-Alexa calls.

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