All items tagged with loudspeaker measurements (80)

CTA-2010: A Better Way to Measure Subwoofers

September 8, 2021 by Brent Butterworth

CTA-2010: A Better Way to Measure Subwoofers

Exploring the Standard Method of Measurement for Subwoofers (ANSI/CTA-2010-B R-2020), Brent Butterworth discusses how this might be a better method for avoiding the confusion on measuring bass extension of subwoofers. The article details how CTA-2010 measures usable output at 1/3-octave intervals within the subwoofer’s operational range, instead of measuring frequency response at a low sound pressure level. This article was originally published in Voice Coil, June 2021.

audioXpress September 2021 Takes Speaker Building to the Next Level

August 11, 2021 by audioXpress Staff

audioXpress September 2021 Takes Speaker Building to the Next Level

audioXpress September 2021 celebrates its Speaker Builder magazine origins, once again offering an expanded focus on loudspeaker building, design, and testing. Mike Klasco provides an update on Speaker Technology, Claus Futtrup and Jeff Candy discuss Parameter Estimation and Box Simulation with Speakerbench, and Geoff Hill tells us the Tetrahedral Test Chamber Story. In this edition we pay tribute to Roger Russell (1935-2021) and we feature two great DIY projects. Now available online and in print.

Raising the Bar for Loudspeaker Knowledge in Voice Coil August 2021

July 23, 2021 by audioXpress Staff

Raising the Bar for Loudspeaker Knowledge in Voice Coil August 2021

It's time for Loudspeaker News and Developments, unique technology Spotlights, valuable industry Directories, great speaker patent reviews, and Vance Dickason's speaker driver characterizations in Test Bench. This month, Bruno Putzeys and Lars Risbo write about their speaker research for Purifi Audio, James Croft reviews an acoustic low-pass filter patent awarded to Bujeon, and Vance Dickason tests the 5CXN44 coaxial driver from B&C Speakers. This edition features updated directories of Voice Coil and Magnet Vendors and Distributors.

Genelec Introduces GLM 4.1 with AutoCal 2 Automatic Room Calibration Algorithm

July 15, 2021 by audioXpress Staff

Genelec Introduces GLM 4.1 with AutoCal 2 Automatic Room Calibration Algorithm

Genelec is marking the 15th anniversary of its highly praised GLM loudspeaker manager software with the introduction of GLM 4.1, which is compatible with all Genelec Smart Active Monitors and Subwoofers. The GLM 4.1 update offers significant new features and improvements, thanks to the debut of the next-generation AutoCal 2 automatic room calibration algorithm, which delivers a more precise frequency response in a fraction of the time than was previously possible.

Klippel New dB-Lab Version 212 and QC 7 Updates Extend Speaker and Enclosure Characterization Tools

July 1, 2021 by audioXpress Staff

Klippel New dB-Lab Version 212 and QC 7 Updates Extend Speaker and Enclosure Characterization Tools

Klippel released a major software update to its Klippel Analyzer System. The new dB-Lab Version 212 and QC 7 updates now add shared sensor management, support for the new Multi-Scanning Workbench hardware and three further modules (LSIM, MTON, RMA). The Klippel Multi-Scanning Workbench supports near-field holographic soundfield scanning measurements in a much smaller form factor, while the new modules add linear signal modeling and simulation and multi-tone measurements, dedicated to speaker and enclosure design.

Practical Considerations for Quality Control Testing of Loudspeakers

June 30, 2021 by Dan Knighten

Practical Considerations for Quality Control Testing of Loudspeakers

Integrating a power amplifier, microphone power supply, and analyzer required for speaker tests, the article details how the Audio Precision APx517B can save time in the overall test process through reduced setup and configuration steps. The authors also explain how this new AP solution meets the need to balance the cost of test including time, test methods, and system cost, against "the cost of failure" that might result from the expense of warranty repairs, or the possible negative impact to brand from product returns. This article was originally published in Voice Coil, April 2021.

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.

New Klippel SCN Near Field Add-On (SCN-NF) Now Available

March 9, 2021 by audioXpress Staff

New Klippel SCN Near Field Add-On (SCN-NF) Now Available

Announced earlier in 2020, Klippel now confirmed availability of its new SCN Near-Field Add On (SCN-NF), a new solution that accurately enables all the most relevant transducer measurements using a single hardware setup in a non-anechoic room. This new powerful addition to the Klippel Scanning Vibrometer is a smart alternative to using an anechoic chamber, and the fastest way to get full directivity holographic measurements, extrapolate SPL to any point in 3D half-space and obtain balloon, contour, polar and sound power plots.

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