All items tagged with loudspeaker measurements (80)

April 4, 2022 by Joao Martins

Klippel Updates dB-Lab and QC Software with Improved Features for R&D and Production

Klippel has released a new software update for the Klippel Analyzer System with various new features for both R&D and QC applications. The most important updates include an improved Time Frequency Analysis (TFA) module, the official release for the QC 3D Spectrogram Limits (3DL) optional module for Quality Control (QC) testing, while adding Impedance (IMP) for T/S parameter testing and Motor + Suspension Check (MSC) tasks, among other features, to the QC Stand-alone software. The update is free of charge for all users running dB-Lab 212 or QC7.

March 22, 2022 by audioXpress Staff

AES Announces New AES75 Standard for Loudspeaker Performance Measurement

More than three years past since M-Noise was proposed as a new test signal for standardized measurement of a loudspeaker system’s maximum linear output, the Audio Engineering Society has announced the adoption and publication of AES75-2022, “AES standard for acoustics - Measuring loudspeaker maximum linear sound levels using noise.” The new standard addresses the need for a practical and cohesive procedure for the prediction of loudspeaker performance.

January 19, 2022 by Vance Dickason

Klippel KA3 Modules — Time Frequency Analysis

While Voice Coil Test Bench reviews only make use of the Large Signal Identification (LSI) data from the Klippel analyzer, the reality is that there is an amazing list of 30 modules available for the KA3 that are seriously valuable for transducer and system development. As space permits, I will be covering a number of these modules in future issue of Voice Coil. The first module in this series is the Time Frequency Analysis (TFA) module. This article was originally published in Voice Coil, October 2021

January 3, 2022 by Geoff Hill

R&D Stories: The Tetrahedral Test Chamber Story (Part 2) - Consistent Loudspeaker Measurements

In this article Geoff Hill completes the Tetrahedral Test Chamber story, a concept born out of necessity, simple wavelength theory and Beranek's wedges, measurement theory, and building upon experience gained in designing chambers in Europe, US, and Asia. These chambers are now in use throughout the world, providing consistent, reliable, and accurate measurements of loudspeaker transducers and loudspeaker systems. This article was originally published in audioXpress, October 2021.

December 29, 2021 by Geoff Hill

R&D Stories: The Tetrahedral Test Chamber Story (Part 1) - Recognizing the Need for Consistent Measurements

This article revisits the story of the development of the Tetrahedral Test Chamber (TTC), by Geoff Hill, loudspeaker engineer, author, and inventor, in an effort to solve the longstanding problem of making consistent loudspeaker measurements. This innovative loudspeaker test chamber is now defined in international standards and in use throughout the world, scalable to any size of loudspeaker driver. This article was originally published in audioXpress, September 2021.

December 6, 2021 by audioXpress Staff

Klippel Announces dB-Lab Software Updates and New Virtual Lecture 2022 Event

Klippel announced a minor software update for both the R&D and QC software of the Klippel Analyzer System, free of charge for current users of dB-Lab major version 212 or QC 7. The update introduces the new Multi-Tone Measurement (MTON) and Multi-Tone Distortion Task (MTD) measurements, updates to the Near-Field Scanner (NCS) software and new capabilities for the Poly2SCN converter utility, which converts scan data from Polytec systems toto Klippel Software formats. And Klippel announced details of its 2022 Virtual Lecture event.

November 29, 2021 by audioXpress Staff

Outline Announces Globe Source Radiator Acoustic Measurement Solution

Designed in collaboration with the Department of Mechanical And Industrial Engineering at the prestigious Brescia University in Lombardy, and engineered in Italy by Outline, the new Globe Source Radiator (GSR) high-power omnidirectional sound source solution provides a vital tool for acoustic analysis. Complemented with the Outline NG01 noise generator that can be controlled with a radio remote control, and the portable Outline L3000 DSP amplifier, the GSR offers a high-SPL solution for acoustics measurements in all environments, including large venues and spaces.

November 10, 2021 by Claus Futtrup and Jeff Candy

Parameter Estimation and Box Simulation with Speakerbench (Part 1) - Model Parameter Comparisons

The two authors investigate leakage loss as identified with an advanced transducer model and verified with measurements. This is compared to classical Thiele-Small modeling with the intention to motivate the reader to further explore advanced parameter estimation and box simulation with the Speakerbench Speaker Design Calculations online tool. This two-part article concludes with an overview of how Speakerbench offers an accurate and practical approach to this problem. This article was originally published in audioXpress, August 2021.

November 1, 2021 by audioXpress Staff

Outline Announces Revamped ET Series Acoustic Measurement Turntables

A longstanding mainstay of Outline’s diverse portfolio of products, the company's ET System measurement turntables have received important new developments and refinements and are now available in two new models - ET50-3D and ET250R2-3D - to suit different speed and load requirements. Outline’s original concept of a high-precision, computer-controlled turntable capable of placing significant loads with perfect accuracy in a measurement environment is in daily use around the world.

September 13, 2021 by audioXpress Staff

audioXpress October 2021 Home Theater Edition Now Available

The October 2021 edition of audioXpress is now available in print and digital. This edition offers a balanced mix of content, starting with our annual market update report on home theater, and associated residential technologies. Brent Butterworth reviews a MEMS earphone design from USound, Geoff Hill completes his Tetrahedral Test Chamber Story, and Bruce Heran writes about refurbishing Altec Lansing Vintage Speakers. Diving into audio electronics, Morgan Jones writes about Ultra-Linear Design; Morty Tarr discusses Cascodes and Folded Cascodes; and Richard Honeycutt talks about the Effects of Negative Feedback. Jump right in!

Klippel Updates dB-Lab and QC Software with Improved Features for R&D and Production

AES Announces New AES75 Standard for Loudspeaker Performance Measurement

Klippel KA3 Modules — Time Frequency Analysis

R&D Stories: The Tetrahedral Test Chamber Story (Part 2) - Consistent Loudspeaker Measurements

R&D Stories: The Tetrahedral Test Chamber Story (Part 1) - Recognizing the Need for Consistent Measurements​

Klippel Announces dB-Lab Software Updates and New Virtual Lecture 2022 Event

Outline Announces Globe Source Radiator Acoustic Measurement Solution

Parameter Estimation and Box Simulation with Speakerbench (Part 1) - Model Parameter Comparisons

Outline Announces Revamped ET Series Acoustic Measurement Turntables

audioXpress October 2021 Home Theater Edition Now Available

R&D Stories: The Tetrahedral Test Chamber Story (Part 1) - Recognizing the Need for Consistent Measurements