All items tagged with audio measurements (140)
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.
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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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Practical T&M: Measuring MEMS Microspeakers
July 17, 2024 by Steve Temme and Michael Ricci

Practical T&M: Measuring MEMS Microspeakers

MEMS microspeakers are a completely new class of product with its unique challenges. MEMS drivers are now commercially available and seeing fast evolution and adoption in true wireless stereo (TWS) earbuds and in-ear monitors (IEM). With the emergence of these small form-factor transducers comes the need to address how to measure its performance and ensure product quality, even before its integration in finished products.
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NTi XL3 Acoustic Analyzer Now Supports STIPA Speech Intelligibility Measurements
July 11, 2024 by Joao Martins

NTi XL3 Acoustic Analyzer Now Supports STIPA Speech Intelligibility Measurements

NTi Audio continues to expand the possibilities of its XL3 handheld acoustic analyzer and sound level meter. The XL3 now supports speech intelligibility measurements according to the IEC60268-16 STIPA international standard. Together with NTi's TalkBox (acoustic) and MR-PRO (electrical) signal sources, the XL3 is now an ideal tool for efficient and reliable STIPA measurement tasks, allowing the measured values to be conveniently visualized in a report.
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Audio Precision Announces APx500 Global Workshop Series
July 11, 2024 by audioXpress Staff

Audio Precision Announces APx500 Global Workshop Series

Starting in August, and continuing through December 2024, Audio Precision is promoting its APx500 Global Workshop Series in North America, Europe and the Asian-Pacific. The APx500 Measurement Software is a common software platform for all APx Audio Analyzers. The advanced audio measurement solution is offered with a wide range of options tailored to specific applications, including electro-acoustic testing (R&D or Production), perceptual audio test (POLQA), speech intelligibility (ABC-MRT and STI measurements).
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Room EQ Wizard (REW) - Looking Back on Audio Measurement Software History
May 22, 2024 by Philipp Paul Klose

Room EQ Wizard (REW) - Looking Back on Audio Measurement Software History

This article revisits 20 years of Room EQ Wizard (REW), one of the mainstays in the audio measurement tool landscape with a strong user base. What started out as a side project for John Mulcahy, the creator and only developer, evolved to become a very complete and useful suite for both enthusiasts and professionals - a comprehensive set of measurement software tools bundled in a free package. This entertaining history of REW is also a fit way to commemorate the software's 20th anniversary.
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Fresh From the Bench: Listen SoundCheck and AmpConnect 621 Audio and Acoustics Test Suite
May 8, 2024 by Rens Tellers

Fresh From the Bench: Listen SoundCheck and AmpConnect 621 Audio and Acoustics Test Suite

The latest version of Listen's flagship audio test software, SoundCheck 21, allowed audioXpress to review also the latest Listen AmpConnect 621 USB-controlled multichannel audio test interface. The innovative algorithms and increased measurement capabilities of this powerful and flexible software, together with the AmpConnect 621 analyzer, combines all the functionality required for audio testing in the lab bench or in the production line. This article was originally published in audioXpress, March 2024.
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Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024
February 12, 2024 by audioXpress Staff

Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024

The March 2024 issue of audioXpress includes an overview of the latest Audio Test and Measurement solutions, a review of the Listen SoundCheck 21 and AmpConnect 621 test suite, and a tribute to 20 years of Room EQ Wizard (REW). Learn how to build a True-RMS Voltmeter and what's behind the myth of Second Harmonic Distortion. Learn how motion feedback technologies can be applied to speakers, and how our hearing process affects our audio listening experiences, and much more. Dive in now!
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The IEC 60263:2020 Standard - Is a Picture Worth a Thousand Words?
February 1, 2024 by Geoff Hill

The IEC 60263:2020 Standard - Is a Picture Worth a Thousand Words?

With the proliferation of different electronic formats and screen grabs, aspect ratios, scales, and sizes for plotting frequency characteristics and polar diagrams, presenting audio measurement results in a clear and informative way is an even greater problem today than in the past! Geoff Hill explains what there is to know about the IEC 60263:2020 updated standard: Rules for scales and sizes for plotting frequency characteristics and polar diagrams... and what could go wrong.
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Studio Six Digital Takes Over Production and Releases New USB-C Measurement Microphones and Interfaces
January 3, 2024 by Joao Martins

Studio Six Digital Takes Over Production and Releases New USB-C Measurement Microphones and Interfaces

Studio Six Digital, the creators of the popular AudioTools test & measurement platform for Apple iOS, iPadOS, and macOS operating systems, has brought the production of all hardware products, including its popular iTestMic2 and iAudioInterface2, back in-house. The Californian company also updated all products to have USB-C connections to work with the latest iPhone 15 models, all of the USB-C iPads, as well as Mac and Windows computers and even Android devices.
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