All items tagged with audio measurements (138)

Fresh From the Bench: QuantAsylum QA403 32-bit Audio Analyzer

February 26, 2025 by Jan Didden

Fresh From the Bench: QuantAsylum QA403 32-bit Audio Analyzer

The QuantAsylum QA403, the 4th generation audio analyzer from the company founded by Matt Taylor in 2012, has a lot to offer. In particular when a user gets tips and guidance from someone like Bob Cordell, no less. The QuantAsylum QA403 Analyzer was the result of a complete redesign imposed by the silicon shortages and supply chain disruptions, pre- and post-pandemic. It appears that the efforts made were well worth it. Jan Didden shares his impressions.

Klippel Three-Day Lecture 2025 Focused on Sound Quality of Audio Systems - Modeling, Measurement & Control

February 19, 2025 by audioXpress Staff

Klippel Three-Day Lecture 2025 Focused on Sound Quality of Audio Systems - Modeling, Measurement & Control

The increasingly popular, annual three-day lecture event by Wolfgang Klippel returns in March 17-19, 2025. Taking place once again at the Technical University of Dresden, Germany, this is a valuable opportunity to hear Dr. Wolfgang Klippel, professor at the Institute of Acoustics and Speech Communication, providing deep insights into measurement and diagnostic techniques used in loudspeaker design.

Expand Your Audio Development Skills with audioXpress March 2025

February 12, 2025 by audioXpress Staff

Expand Your Audio Development Skills with audioXpress March 2025

audioXpress March 2025, focused on Test and Measurement and audio electronics, explains how to test Power Amplifiers, and how to measure HDMI Audio. Explore the possibilities of George Ntanavaras' SL-100 Sound Level Adjuster and Tom Perazella's Reinforced Speaker Protection solution. Read the interview with Mike Engelhardt, explaining everything about audio THD with QPSICE circuit simulation. Brian Lowe concludes its article on Op-Amp for Phono Preamps, and much more.

Advances in Measurement Microphones for Automotive Testing

January 8, 2025 by Santiago Rayes

Advances in Measurement Microphones for Automotive Testing

This article offers a timely update about the evolution of measurement microphones and the reasons for common choices for automotive measurement applications. The article also expands on current discussions about standard approaches for automotive in-cabin acoustic measurements, including the recent AES TC-AA proposed measurement techniques for automotive audio. A great overview of how measurement microphones can meet new requirements, given the emergence of new technologies, new infotainment options, improved calls, active noise cancellation, and rising consumer expectations.

HEAD acoustics ACQUA Adds Listening Effort Prediction Option

November 15, 2024 by audioXpress Staff

HEAD acoustics ACQUA Adds Listening Effort Prediction Option

With LEAP (Listening Effort Prediction from Acoustic Parameters) now integrated into ACQUA 6.1.100, HEAD acoustics offers an optional tool for on-site prediction of the perceived listening effort. The software predicts the perceived listening effort of a listener when hearing an impaired speech signal without the need for an undisturbed reference signal. This makes it possible to carry out measurements more efficiently under laboratory conditions and in real-world applications.

Audio Precision Introduces APx500 Software Update with ARM CPU Support

November 11, 2024 by Joao Martins

Audio Precision Introduces APx500 Software Update with ARM CPU Support

Audio Precision announced the release of APx500 software version 9.0.1 Beta, now supporting ARM CPU architecture, commonly found in mobile and Apple silicon devices. With a minor increment in numbering, this software version is actually a very big development, allowing users to run APx500 directly on ARM-based Windows PCs, including the latest Microsoft Surface devices, and on Mac computers via virtual machine software such as Parallels Desktop.

Studio Six Digital Launches New SoundScope VR Module

November 1, 2024 by Joao Martins

Studio Six Digital Launches New SoundScope VR Module

Studio Six Digital announced the release of a new SoundScope VR module for its AudioTools professional audio test & measurement iOS app. SoundScope VR is an advanced acoustic analysis module that uses an advanced FFT algorithm to precisely analyze audio and offers a number of plotting options so that users can visualize the performance of an audio system in real time. Some of it's powerful features include an FFT 1/48th octave audio analyzer, RTA bar, line, and combo RTA+FFT plots, SPL measurements, and split-screen with Spectrograph.

Inside the Audio Lab: How Apple Developed Its Hearing Health Experience

October 28, 2024 by audioXpress Staff

Inside the Audio Lab: How Apple Developed Its Hearing Health Experience

Apple owns multiple R&D centers spread across the globe, some of which include state-of-the-art anechoic chambers and advanced acoustic simulation rooms. Apple’s state-of-the-art Audio Lab in Cupertino, California, is the hub for the design, measurement, tuning, and validation of all of Apple’s products with speakers or microphones. It’s also the center for Apple's multiyear, cross-team collaboration that enabled the new hearing health features on AirPods Pro 2.

SPL Graph Data: Let’s Get Back to a Level Playing Field

July 24, 2024 by Tom James

SPL Graph Data: Let’s Get Back to a Level Playing Field

This excellent thought piece by loudspeaker industry veteran Tom James, addresses the often disregarded topic of speaker measurements and the corresponding variables of SPL Graph Data. In his short essay James explores the impact of ignoring or intentionally manipulating the rules established in the "Scales and Sizes for Plotting Frequency Characteristics and Polar Diagrams," defined in the IEC-602632 standard, originally from 1982 and updated in 2020.

NTi Audio Receives Class 1 Certification for XL3 Sound Level Meter

July 23, 2024 by audioXpress Staff

NTi Audio Receives Class 1 Certification for XL3 Sound Level Meter

The NTi XL3 Sound Level Meter has received type approval from the Physikalisch-Technische Bundesanstalt (PTB) entity in Germany and can therefore be used for precision-grade Class 1 measurements in full compliance with the sound level meter standard IEC 61672:2014. As NTi Audio confirms, this level of certification qualifies the XL3 for legally compliant measurements of environmental noise, occupational noise, and sound insulation tests in Germany and in many other countries around the world.

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