All items tagged with audio measurements (130)

R&D Stories: QuantAsylum, A Real-World View of Test and Measurement

April 7, 2021 by David Logvin

R&D Stories: QuantAsylum, A Real-World View of Test and Measurement

Following the review of two QuantAsylum’s products featured in the December 2020 edition of audioXpress, David Logvin interviews Matt Taylor, the president and founder of QuantAsylum - a unique and fast growing test and measurement company based in the state of Washington - that adopted a unique modular product/solution approach that seems to be incredibly agile, adjusting well to current times. This article was originally published in audioXpress, March 2021.

audioXpress March 2021 Brings Increased Focus on Audio Test & Measurement

February 11, 2021 by audioXpress Staff

audioXpress March 2021 Brings Increased Focus on Audio Test & Measurement

For this edition of audioXpress, start with our valuable Market Update on Audio Test and Measurement, followed by an interview and guided tour of QuantAsylum. From a practical perspective, Stuart Yaniger shares his experience with the latest version of Virtins Multi Instrument Measurement Software, Michael Steffes explains how to explore an interesting composite amplifier structure for great results, Mike Meechan continues his series on microphone preamplifier design, and Ethan Winer explains how to avoid too much wiring in large designs. Another great edition of audioXpress, now available to read in print and online.

Searching for a Unicorn Part 2: Generating a Good Signal Source

January 27, 2021 by Brian Lowe

Searching for a Unicorn Part 2: Generating a Good Signal Source

In this second article, Brian Lowe (Belleson LLC) continues his search for the Unicorn of "Measuring Voltage Regulator Ripple Rejection," this time focusing on the test fixtures. Testing a voltage regulator with exceptionally good performance requires an even more exceptional signal source and measurement setup to measure sub-microVolt ripple across a wide frequency range. Complementing the final article, Jan Didden, offers an informative sidebar about super regulators. This article was originally published in audioXpress, June 2019.

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

January 20, 2021 by Brian Lowe

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

In this article Brian Lowe shares a fascinating journey in his search for a "Unicorn" that is measuring voltage regulator ripple rejection - or power supply rejection ratio (PSRR). Lowe is the founder and principle engineer at Belleson, LLC, and he has devoted a lot of time to this fascinating "quest." This article was originally published in audioXpress, May 2019.

Fresh From the Bench: QuantAsylum QA401 and QA451 Compact and Modular Audio Measurement System

January 7, 2021 by David Logvin

Fresh From the Bench: QuantAsylum QA401 and QA451 Compact and Modular Audio Measurement System

On the cover of audioXpress December 2020, many of our readers instantly recognized the familiar look of the increasingly popular QuantAsylum QA401 audio analyzer. What many readers didn't recognize by then was the second module, the completely new QA451 programmable load, so new that audioXpress tested a pre-production version. In this review article, David Logvin shares his valuable perspective on this modular solution for audio measurements from QuantAsylum.

Practical Test & Measurement: Mastering Wireless Multi-Tone Testing

December 29, 2020 by Andrew Taylor

Practical Test & Measurement: Mastering Wireless Multi-Tone Testing

This article explains the issues resulting from measuring a wireless audio connection and how wireless multi-tone testing can help us to overcome those obstacles. The article is particularly focused on the needs of manufacturers and designers of modern wireless audio devices and offers valuable insights on multi-tone testing, a technique that has been around for many years, and which Klippel perfected in its own multi-tone measurement module (MTON). This article was originally published in audioXpress, December 2020.

Practical Test & Measurement: What to Measure for Quality Control of Audio Devices

December 3, 2020 by Dan Knighten

Practical Test & Measurement: What to Measure for Quality Control of Audio Devices

In this Test & Measurement article from Dan Knighten (Audio Precision), the author focuses on the practical question of manufacturing test strategies and objectives and shares what measurements reveal about the device under test, offers suggestions for specific measurements, and provides techniques for various devices and scenarios. This article was originally published in audioXpress, November 2020.

Audio Precision Announces New APx517B Acoustic Analyzer Fulfilling the Requirements of Production Test

November 19, 2020 by audioXpress Staff

Audio Precision Announces New APx517B Acoustic Analyzer Fulfilling the Requirements of Production Test

Audio Precision announced the APx517B acoustic analyzer, specifically designed, configured and built for the production-line testing of speakers, microphones, headphones, headsets and the wide range of consumer electronics incorporating speakers and microphones. With the introduction of the APx517B acoustic analyzer, manufacturers can deploy an integrated acoustic test system that brings the renowned quality, reliability and robustness of Audio Precision’s lab-oriented analyzers to their production lines.

Klippel Analyzer System Receives Software Updates for Testing DSP-Based Audio Devices

November 17, 2020 by Joao Martins

Klippel Analyzer System Receives Software Updates for Testing DSP-Based Audio Devices

Klippel has been keeping busy in the last months, continuously improving their measurement technology for loudspeakers and audio systems. With the dB-Lab 210.918 and QC 6.7 software updates, Klippel introduced new tools for testing DSP-enhanced speakers, headphones and connected audio systems, first with and hardware add-on for the SCN Scanning Vibrometer, and second with an extension for automatic testing at multiple excitation levels using the TRF module.

HEAD acoustics Promotes Days of Acoustics 2020 Online Seminars

November 4, 2020 by audioXpress Staff

HEAD acoustics Promotes Days of Acoustics 2020 Online Seminars

Record. Analyze. Understand. In 2020, you are all sitting in the front row! This is the inspirational appeal for this year's HEAD acoustics "Day of Acoustics" roadshow, a series of free online seminars with dedicated focus topics, taking place from October 29 to December 03, 2020. The online sessions are offered by HEAD acoustics experts in integrated acoustics solutions, sound and vibration analysis, and audio measurement, in areas such as telecommunications, automotive, and speech and audio quality optimization.

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