All items tagged with GRAS Sound & Vibration (38)

Tribute to An Industry Pioneer: Gunnar Rasmussen (1925-2024)

April 19, 2024 by audioXpress Staff

Tribute to An Industry Pioneer: Gunnar Rasmussen (1925-2024)

The founder of GRAS Sound & Vibration, the renowned acoustical engineer Gunnar Rasmussen, passed away on April 17, 2024. Gunnar Rasmussen founded GRAS in 1994, at the age of 67, after leaving Brüel & Kjær, where he worked since his graduation. Starting out as a small family business, run by Gunnar Rasmussen and his wife Hanna Hertz, the Danish measurement microphones specialist quickly grew into a respected manufacturer, lead by his extraordinary vision and guiding principles. His lifework improved our understanding of sound, acoustics and the human hearing.

In-Ear Technology Meets Music Fidelity in audioXpress April 2024!

March 12, 2024 by audioXpress Staff

In-Ear Technology Meets Music Fidelity in audioXpress April 2024!

Read the latest Earbuds and Hearables market update. sensiBel experts explain everything about the advantages of Microphone Array Beamforming with Optical MEMS Microphones. GRAS' researchers share their findings about Ear Canal Geometry for In-Ear Headphone Testing. Learn how Hearing and Audio affects our perception of music fidelity. Jan Didden interviews Menno van der Veen. Andrew Russell shares his High-Performance 60-Watt Class A Amplifier project, and Tom Perazella explains how to build a Comprehensive AC Power Controller.

Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024

February 12, 2024 by audioXpress Staff

Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024

The March 2024 issue of audioXpress includes an overview of the latest Audio Test and Measurement solutions, a review of the Listen SoundCheck 21 and AmpConnect 621 test suite, and a tribute to 20 years of Room EQ Wizard (REW). Learn how to build a True-RMS Voltmeter and what's behind the myth of Second Harmonic Distortion. Learn how motion feedback technologies can be applied to speakers, and how our hearing process affects our audio listening experiences, and much more. Dive in now!

Just One More Thing. Don't Miss Voice Coil December 2023

November 29, 2023 by audioXpress Staff

Just One More Thing. Don't Miss Voice Coil December 2023

This is the last issue of Voice Coil for 2023, which includes a combination of valuable industry resources and expert knowledge for loudspeaker engineers. Mike Klasco and Nora Wong (Menlo Scientific) have compiled an updated directory of Engineering Simulation Software and Test & Measurement Hardware Vendors. And in Test Bench, Vance Dickason characterizes the latest PTT8.0X04-NAB-02 8" aluminum cone woofer from Purifi Audio.

October 17, 2023 by Joao Martins

GRAS Releases New Production Line Measurement Microphone with EQset Technology

GRAS Sound & Vibration, announced the new GRAS EQ 40PM-1 microphone. This new miniature microphone joins the already successful family of GRAS measurement microphones with EQset technology, lowering the cost of precision in production line acoustic measurements. GRAS EQset technology essentially guarantees fixed sensitivity and a flat response curve across all frequencies, out of the box, vastly reducing the risk of measurement errors. The GRAS EQ 40PM-1 with EQset is an upgraded version of the EQ 40PM, the first in the EQset line.

Interview: GRAS EQset “Fire and Forget” Measurement Microphone Series

August 30, 2023 by Rens Tellers

Interview: GRAS EQset “Fire and Forget” Measurement Microphone Series

audioXpress interviewed Rémi Guastavino, Director of Product Management at GRAS Sound & Vibration, to uncover the details of the new EQset measurement microphone series. This important innovation in measurement microphones is directly targeted at production lines and allows users to reduce spread in specifications compared to what's possible with more traditional microphones. Learn about the story of the development and the series' first product on the market. This article was originally published in audioXpress, July 2023.

Audio Amplifiers and Exciting Innovations in audioXpress July 2023

June 12, 2023 by audioXpress Staff

Audio Amplifiers and Exciting Innovations in audioXpress July 2023

audioXpress July 2023 provides an updated market and technology overview of Audio Amplifiers, includes the review of the Hypex Nilai500DIY 500W Power Amplifier Kits, a visit to Dutch company Grimm Audio, and an interview with Rémi Guastavino to discuss the new GRAS EQset measurement microphone series. Plus a review of the new WiiM Pro Music Streaming System, a new article series about Bass Reflex speaker performance, and a lot more.

GRAS Introduces a True Multifield 1/4" High-sensitivity Microphone

May 5, 2023 by audioXpress Staff

GRAS Introduces a True Multifield 1/4" High-sensitivity Microphone

GRAS Sound & Vibration introduced a new microphone that can acquire good data in any sound field and, at 24 dB(A), has the lowest noise floor of any 1/4" measurement microphone. The new GRAS 46BC measurement microphone is a true multifield microphone for use in pressure, free-field, or random-incidence environments or any scenarios where the sound field is ill-defined or changing - ideal for automotive in-cabin and NVH testing.

Hearables, Headphones Testing, Audio Electronics, and More in audioXpress April 2023

March 10, 2023 by audioXpress Staff

Hearables, Headphones Testing, Audio Electronics, and More in audioXpress April 2023

Want to understand what's ahead in the most revolutionary audio product category of the 21st century? Read the State of the Hearables Industry Market Update. And for product developers and manufacturers, there's also a Headphones Test and Measurement report. Burkhard Vogel discusses op-amp noise in simulated models, Bruce E. Gillingham offers a complete monoblock power amplifier project, and René Christensen writes about acoustic topology optimization. And so much more....

GRAS Launches EQ 40PM EQset Miniature Production Line Measurement Microphone

February 15, 2023 by audioXpress Staff

GRAS Launches EQ 40PM EQset Miniature Production Line Measurement Microphone

GRAS Sound & Vibration announced a new miniature production line microphone, which is the first with the recently announced GRAS EQset technology designed to reduce the risk of measurement errors. The new EQ 40PM EQset, a short 20kHz pressure microphone with a dynamic range from 30dB (A) to 120dB, and the same dimensions as traditional Production Line microphones, is aimed at increasing efficiency and improving test accuracy in the consumer audio and telecom space.

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