All items tagged with loudspeaker measurements (83)

Book Review: How to Design and Specify Loudspeaker Drivers

April 10, 2019 by Richard Honeycutt

Book Review: How to Design and Specify Loudspeaker Drivers

Our longtime columnist Richard Honeycutt shares his insights on Geoff Hill’s recently released book, Loudspeaker Modelling and Design: A Practical Introduction, which demonstrates modern software and hardware being applied to the processes behind loudspeaker design and modeling. Learn more about this indispensable work, now available from publisher Routledge / Focal Press. This article was originally published in audioxpress, February 2019.

Beyond Thiele/Small DUMAX and Klippel Driver Measurement Systems

March 13, 2019 by Thomas Perazella

Beyond Thiele/Small DUMAX and Klippel Driver Measurement Systems

Anyone who is serious about designing a loudspeaker using dynamic drivers is either familiar with, or has used, Thiele/Small parameters, generally accepted as ways to predict driver behavior in different enclosures. But there are other measurement methods we can use to determine and quantify nonlinearities: the DUMAX system, produced by DLC Design, and the Klippel Analyzer System by Klippel GmbH. This article was originally published in audioXpress, March 2003.

Meyer Sound Introduces M-Noise Test Signal for ‘Real World’ Loudspeaker SPL Measurements

January 21, 2019 by audioXpress Staff

Meyer Sound Introduces M-Noise Test Signal for ‘Real World’ Loudspeaker SPL Measurements

Meyer Sound has introduced M-Noise, a new test signal that will promote standardized measurement of a loudspeaker system’s maximum linear output. A mathematically derived test signal that effectively emulates the dynamic characteristics of music, according to Meyer Sound, M-Noise enables a far more accurate measurement of a loudspeaker system’s linear peak SPL in any application requiring reproduction of musical content.

HEAD acoustics Introduces HQS-Audio for Comprehensive Testing of Loudspeakers, Headphones and Audio Systems in Vehicles

November 28, 2018 by audioXpress Staff

HEAD acoustics Introduces HQS-Audio for Comprehensive Testing of Loudspeakers, Headphones and Audio Systems in Vehicles

HEAD acoustics, one of the world's leading companies in the field of voice and audio quality optimization, introduced HQS-Audio, a new tool for its ACQUA analysis system that provides whole set of targeted electroacoustic measurements and helps to comprehensively test the quality of audio devices. Whether loudspeakers, headphones, or audio systems in vehicles, HQS-Audio provides independent test runs for each application, consisting of various electroacoustic measurements, including Thiele-Small parameters.

Measuring Loudspeaker Low-Frequency Response

November 14, 2018 by Joe D'Appolito

Measuring Loudspeaker Low-Frequency Response

With the availability of low-cost, PC-based acoustic data acquisition systems, experienced hobbyists can make highly accurate loudspeaker frequency-response measurements without an anechoic chamber. The power of these systems comes at a price. These systems window the time-domain measurement to eliminate room reflections. This, in turn, limits low-frequency response. This article was originally published in audioXpress, June 2012.

Application Note: All You Need to Know About Loudspeaker Electroacoustic Measurements

November 7, 2018 by audioXpress Staff

Application Note: All You Need to Know About Loudspeaker Electroacoustic Measurements

This 33-page application note provides an overview of the key electroacoustic measurements used to characterize the performance of loudspeaker drive units and loudspeaker systems, focusing on the most important objective measurements and referring to industry standards for guidance. Download the Audio Precision application note now!

User Report: Loudsoft FINE R+D Analyzer

April 19, 2018 by Vance Dickason

User Report: Loudsoft FINE R+D Analyzer

Beginning with the January 2018 issue of Voice Coil magazine, Vance DIckason implemented the Loudsoft FINE R+D analyzer into the Test Bench measurement protocol. This article provides details about the features in FINE R+D FINE R+D, a Fast Fourier Transform (FFT) analyzer packaged in a 1u rack, which is used with the recommended G.R.A.S. 0.25” Type 46BE microphone capsule and preamplifier body. This article was originally published in Voice Coil, December 2017.

Loudspeaker Measurement Tools from Physical Lab

April 11, 2018 by Vance Dickason

Loudspeaker Measurement Tools from Physical Lab

Physical Lab, based in Senden, Germany, is a fascinating company in that it not only manufactures loudspeaker test solutions directly aimed at speaker development and research, but also provides several engineering services for the loudspeaker industry. This article highlights the three loudspeaker measurement accessories that Physical Lab manufactures — the Physical Lab Mini Reference Amplifier, the Physical Lab Imp Box, and the Physical Lab ISO Box. The article was originally published in Voice Coil, December 2017.

Audio Precision Expands Microphone Product Family

March 13, 2018 by audioXpress Staff

Audio Precision Expands Microphone Product Family

Audio Precision announced the expansion of its line of measurement microphones with the introduction of the 376M03, a calibrated microphone system combining a 1/2" microphone cartridge with a phantom-powered preamplifier - the 426M16 - in its 1/2" configuration. The new preamplifier combines the precision of calibrated, standardized measurement microphones with the convenience of ubiquitous mic accessories offering phantom power, balanced connections for improved immunity to induced noise, and easy connectivity via common XLR cables.

Speaker and Microphone Measurements: Eliminate Reflections While Testing

March 6, 2018 by audioXpress Staff

Speaker and Microphone Measurements: Eliminate Reflections While Testing

Acoustic reflections in rooms, in the form of reverberation, contribute significantly to the characteristic of sound. In acoustic measurements for quality testing of loudspeakers and microphones, however, these reflections can produce inaccurate results and should therefore be excluded as far as possible. The measurement results must be reproducible and not significantly influenced by the room acoustics. In this article, NTi Audio explains how to remove reverberation from the measurement results.

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