All items tagged with loudspeaker measurements (83)

Measuring Loudspeaker SPL Response and Harmonic Distortion at Low Frequencies

November 8, 2023 by Reinhold Lutz

Measuring Loudspeaker SPL Response and Harmonic Distortion at Low Frequencies

This article discusses how to measure loudspeaker SPL response and harmonic distortion at low frequencies in a standard environment, full of reflections from acoustically hard boundaries (e.g., walls, floor, and ceiling), room resonances, and even ambient noise reducing the dynamic range and accuracy of the measurements. The method combines near-field measurements with two identical microphones. This article was originally published in audioXpress, October 2023.

AES Publishes AES75-2023 AES Standard for Acoustics Update

October 18, 2023 by Audio Engineering_Society

AES Publishes AES75-2023 AES Standard for Acoustics Update

The Audio Engineering Society Standards Committee has published an updated to the recently approved standard, AES75-2023: "AES standard for acoustics – Measuring loudspeaker maximum linear sound levels using noise." The standard, originally announced and adopted in March 2022, addresses the need for a practical and repeatable procedure for quantifying this key aspect of loudspeaker performance. The update reflects industry support from audio manufacturers, audio test and measurement manufacturers, and service providers.

Speakerbench YouTube Channel Discusses Loudspeaker Bass Reflex Alignments

August 1, 2023 by audioXpress Staff

Speakerbench YouTube Channel Discusses Loudspeaker Bass Reflex Alignments

Claus Futtrup and Jeff Candy, the two creators of the Speakerbench online tool for assisting in speaker design calculations, continue to introduce more and more tools and features in this web-based application. In order to inspire even more the loudspeaker DIY community, the two authors have created an interesting Speakerbench Youtube channel where we can find new interesting videos discussing the history of speaker design theory and specifically Loudspeaker Bass Reflex Alignments.

Lyceum Introduces Advanced Data Ingestor for Audio Measurement Data Management and Collaboration

April 27, 2023 by Joao Martins

Lyceum Introduces Advanced Data Ingestor for Audio Measurement Data Management and Collaboration

Lyceum unveiled the Advanced Data Ingestor, a solution designed to streamline audio measurement data management and collaboration. This tool automates repetitive data cleaning tasks and provides a cloud-based platform for sharing 'clean' data, significantly reducing the time-consuming process that engineers have faced for years. The solution facilitates real-time collaboration between manufacturers and product lead engineering teams, allowing for quicker issue identification and resolution.

New Klippel Endurance Testing (KET) Available with Winter 2023 Klippel Software Update

February 21, 2023 by Joao Martins

New Klippel Endurance Testing (KET) Available with Winter 2023 Klippel Software Update

A completely new approach to long-term testing is now available as part of the latest Klippel dB-Lab Version 212 and QC 7 software. The update for the Klippel Analyzer System - free of charge for all users running dB-Lab 212 or QC7 - introduces two new pre-release modules and a new Online Help System for both R&D and QC. The main new module is the Klippel Endurance Testing (KET) and the second is a Nonlinear Residual Analyzer (NRL) tool dedicated to measuring any audio playback device with arbitrary signals such as music or speech.

Speaker Measurements: Replacing IEC 60268-5 (Part 2) - The Importance of Measurements

February 1, 2023 by Geoff Hill

Speaker Measurements: Replacing IEC 60268-5 (Part 2) - The Importance of Measurements

This article concludes the examination by Geoff Hill of the work taking place on loudspeaker measurement standards, and the progress the International Electrotechnical Commission (IEC) has made with its update efforts, also resulting from the work of the Audio Engineering Society's Standards Committee. We learn how these new standards apply to measurements of sound in 3D space and in production environments, SPL using voltage sensitivity, and the measurements of microspeakers. This article was originally published in audioXpress, October 2022.

Speaker Measurements: Replacing IEC 60268-5 (Part 1) - What Comes Next and Why

January 25, 2023 by Geoff Hill

Speaker Measurements: Replacing IEC 60268-5 (Part 1) - What Comes Next and Why

Geoff Hill, the inventor of the Tetrahedral Test Chamber (TTC), a member of the international Electrotechnical Commission’s standards 60268-21-2018 and 60268-22-2020, and part of the IEC Working Group TC 100/TA 20/PT 60268-22 on electrical and mechanical measurements on transducers, summarizes the progress happening on loudspeaker measurement standards. This is the first of two articles, appealing directly to all loudspeaker designers and manufacturers. This article was originally published in audioXpress, September 2022.

FORCE Technology Partners with Sound Hub Denmark to Support Sound Quality Testing

December 14, 2022 by audioXpress Staff

FORCE Technology Partners with Sound Hub Denmark to Support Sound Quality Testing

FORCE Technology, a large technology consultancy and service company and one of the large certification institutes in Denmark, providing on-site inspections, measurements, and calibration laboratories, established a partnership on product sound quality testing with Sound Hub Denmark. The goal is to reinforce the work of the many audio companies that are already using the resources offered by the Sound Hub, while also expanding the range of services available.

Voice Coil December 2022 Improves Loudspeaker Measurements

November 29, 2022 by Joao Martins

Voice Coil December 2022 Improves Loudspeaker Measurements

Voice Coil December 2022 features an updated directory of Measurement Microphones Vendors, Mike Klasco writes about how to Enhance Low-Frequency Performance, and Vance Dickason reminds us that there is a more realistic way to map speaker resonances. Test Bench characterizes two tweeters from Beyma's new Near and Mid Field (NMF) series: the T-25M 1" aluminum/magnesium alloy metal dome tweeter, and the similar T-25S 1" silk dome tweeter.

Listen Releases Free Automated Test Sequence for AES75-2002 Measurements

November 18, 2022 by Joao Martins

Listen Releases Free Automated Test Sequence for AES75-2002 Measurements

Listen is the first test and measurement company to automate measuring loudspeakers to the new AES75-2022 (M-Noise) standard for Maximum SPL. This removes subjectivity, increases reliability, and saves time. The test sequence, developed for use within the company’s popular SoundCheck audio test and measurement system, is available free of charge on Listen’s website. And Listen is now offering the new Portland Tool & Die MDT-4000 audio measurement turntable, fully controllable from within SoundCheck.

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