All items tagged with audio measurements (127)

Listen's New AmpConnect 621 Hi-Res Multichannel Audio Interface Is Now Shipping

June 14, 2021 by audioXpress Staff

Listen's New AmpConnect 621 Hi-Res Multichannel Audio Interface Is Now Shipping

The Listen AmpConnect 621 was unveiled earlier with the launch of SoundCheck 19 software, and is now available. The new multichannel, multifunction, high resolution audio test interface includes all the functionality required for audio testing in just one unit, including an amplifier, microphone power supply, line outputs and digital I/O. And with a sample rate of up to 192kHz, it supports measuring high resolution audio designs.

Achieving Loudspeaker Design Goals Using Multiphysics Simulation

June 11, 2021 by audioXpress Staff

Achieving Loudspeaker Design Goals Using Multiphysics Simulation

Dolby Laboratories and COMSOL join the Audio Product Education Institute in a discussion on the role of modeling and measurements in the loudspeaker design process. The webinar, June 16 (12pm EDT) shares speaker design project experiences, detailing how simulation, measurements, and experiments help in meeting projects' requirements. The use of simulation in audio system design and multiphysics modeling of loudspeakers is addressed.

How to Measure Free-Field Speaker Response Without an Anechoic Chamber

June 7, 2021 by Steve Temme

How to Measure Free-Field Speaker Response Without an Anechoic Chamber

One of the biggest challenges with working from home during the pandemic was not having access to an anechoic chamber. This short tutorial, explains a simple solution for this: a “splice” measurement. The capability for such measurements has been included in SoundCheck since 2001. Despite its long history, this method has not seen widespread use. However, the current pandemic’s working challenges are sparking renewed interest. This article was originally published in Voice Coil, March 2021.

Audio Precision Releases APx500 Version 6.1 Audio Measurement Software

June 1, 2021 by audioXpress Staff

Audio Precision Releases APx500 Version 6.1 Audio Measurement Software

Audio Precision released the APx500 audio measurement software, version 6.1. With this update, AP is adding new measurement results, options, and test signals for production test of loudspeakers, headphone drivers, and microphones. Most importantly for speaker designers and manufacturers the new APx software now offers the broadest set of methodologies available for detecting rub and buzz defects.

Comprehensive Transducer Testing in 24 Minutes

May 27, 2021 by Andrew Taylor

Comprehensive Transducer Testing in 24 Minutes

This article illustrates how the latest Klippel Multi-Scanning Workbench solution allows measurements across several domains (acoustical, mechanical, electrical, and magnetic) while working from non-anechoic environments. The author uses a practical characterization of balanced mode radiator (BMR) loudspeakers, which require a more complex approach when compared to conventional cone-based woofers or dome-tweeters. This article was originally published in Voice Coil, May 2021.

Quantifying Acoustic Sources Through Sound Power Measurement - White Paper Available

May 19, 2021 by Special Content

Quantifying Acoustic Sources Through Sound Power Measurement - White Paper Available

Andrew Barnard, Ph.D., INCE Board Certified from The Pennsylvania State University, touches on the basic source-path-receiver paradigm for white goods sound generation, focusing on the source in his latest research article. Understanding the source-path-receiver model is becoming increasingly important when determining proper measurement techniques for white goods noise radiation. With easy access to white goods data, consumers are more educated than ever on making their purchasing decision.

HEAD acoustics Introduces New Generation of Artificial Heads With Advanced Types of Artificial Ears

April 20, 2021 by audioXpress Staff

HEAD acoustics Introduces New Generation of Artificial Heads With Advanced Types of Artificial Ears

HEAD acoustics introduced a new and much improved design for its artificial heads paving the way for new era of communication and audio quality measurements. The new generation of artificial heads ensures a new level of realism, precision and flexibility when coupled with HEAD acoustics modular concept approach, meeting the most diverse of applications in the field of acoustic measurement technology.

R&D Stories: QuantAsylum, A Real-World View of Test and Measurement

April 7, 2021 by David Logvin

R&D Stories: QuantAsylum, A Real-World View of Test and Measurement

Following the review of two QuantAsylum’s products featured in the December 2020 edition of audioXpress, David Logvin interviews Matt Taylor, the president and founder of QuantAsylum - a unique and fast growing test and measurement company based in the state of Washington - that adopted a unique modular product/solution approach that seems to be incredibly agile, adjusting well to current times. This article was originally published in audioXpress, March 2021.

audioXpress March 2021 Brings Increased Focus on Audio Test & Measurement

February 11, 2021 by audioXpress Staff

audioXpress March 2021 Brings Increased Focus on Audio Test & Measurement

For this edition of audioXpress, start with our valuable Market Update on Audio Test and Measurement, followed by an interview and guided tour of QuantAsylum. From a practical perspective, Stuart Yaniger shares his experience with the latest version of Virtins Multi Instrument Measurement Software, Michael Steffes explains how to explore an interesting composite amplifier structure for great results, Mike Meechan continues his series on microphone preamplifier design, and Ethan Winer explains how to avoid too much wiring in large designs. Another great edition of audioXpress, now available to read in print and online.

Searching for a Unicorn Part 2: Generating a Good Signal Source

January 27, 2021 by Brian Lowe

Searching for a Unicorn Part 2: Generating a Good Signal Source

In this second article, Brian Lowe (Belleson LLC) continues his search for the Unicorn of "Measuring Voltage Regulator Ripple Rejection," this time focusing on the test fixtures. Testing a voltage regulator with exceptionally good performance requires an even more exceptional signal source and measurement setup to measure sub-microVolt ripple across a wide frequency range. Complementing the final article, Jan Didden, offers an informative sidebar about super regulators. This article was originally published in audioXpress, June 2019.

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