Past events

SAE 2015 Noise and Vibration Conference and Exhibition

This year in Grand Rapids, we focused our booth display around the three new aero-acoustic microphones designed ideally for wind tunnel testing, pass-by testing, acoustic fatigue testing, etc., or where mounting a full size microphone set might be a challenge.

• Flush-Mount Microphones (47AX/47AD)

• Surface Mounted Microphones (40LS/40LA)

• Turbulence Screen Microphones (67TS-1-CL)

The G.R.A.S. 47AX 1/2" CCP Flush-Mount Microphone Set is a low profile 1/2" precision pressure microphone with built-in CCP preamplifier. Flush-mounting is ideal where holes can be made in the structure, such as a clay model, to accommodate the front-vented 47AX. A rear-vented version is also available, the 47AX–S1.

The G.R.A.S. 40LS High-Precision Surface Microphone is a high-precision microphone for measurements on planar and curved surfaces. It has a wide useful frequency range reaching up to 70 kHz and a large dynamic range topping at around 167 dB. The 40LS is both very stable and robust. It has an integrated 1.5 m co-axial cable with a microdot connector and is delivered with a supple detachable silicon-rubber fairing. Because of its lightness, the microphone with fairing can readily be mounted on surfaces using double-sided adhesive tape.

The G.R.A.S. 67TS-1-CL Turbulence Screen Kit is designed for aeroacoustic testing in solid-walled wind tunnels. The hydrodynamic component of turbulence is attenuated up to 25 dB. Thereby the acoustic signals of interest can be identified and diagnosed with a reliable resolution.

Don’t wait for two years till we are in Grand Rapids again – today for your demonstration!

AIAA Aviation 2015

We were excited to host a booth at AVIATION 2015 held in beautiful Dallas, Texas. This successful event was attended by more than 2,000 professionals from the US and International aerospace industry including government agencies, academia, and commercial industry.

We had various measurement microphones on display including our three new aero-acoustic microphones (flush-mounted, surface-mounted, and turbulence screen), nosecone microphones (used ideally in wind tunnel applications), as well as our ground array system, which is primarily used for outdoor flyover acoustic testing.

Should you have any questions regarding any of our aeroacoustic products, please contact John Saah at or at his cell phone 240-481-1629.

AudiologyNOW! 2015

Once again, G.R.A.S. supported the AAA and exhibited at the AudiologyNOW! show in beautiful San Antonio, TX.

We relish the opportunity to meet with our partners in the Audiology industries and share the latest information about our products, events and activities, as well as listen to your wants and needs.

This year we focused our booth display around the new 04cc coupler - a product designed with and for the hearing aid industry that delivers differentiated and reproducible data up to 16kHz. The G.R.A.S. 43BA-3 is equally suited for research, quality assurance and production test applications.

We also brought our G.R.A.S. 90AA Audiometer Calibration System, which happily gets a lot of interest from a very international crowd.

As always, we brought our trusty friend KEMAR along – showcasing the upgrades we implemented on his 40th anniversary, which make him much more user friendly and easy to work with. We are so thrilled that KEMAR still elicits such wonderful reactions and that so many of you successfully use KEMAR almost on a daily basis in your research, teaching and training.

We are already looking forward to seeing you at AudiologyNOW! 2016, April 13–16, in Phoenix, Arizona.


NHCA 2015

G.R.A.S. is, as always, proud to be a part of the Hearing Loss prevention movement and look forward to the NHCA show every year.

Once again, we decided to exhibit at the annual conference – held in the beautiful French Quarters in NOLA. A big part of our product portfolio is dedicated to electro-acoustics and the measurement of products that go on/in the ears.

This year, attendees at NHCA could see our G.R.A.S. 45CB test fixture designed specifically for the purpose of testing Hearing Protection Devices as well as our new 0.4cc high frequency coupler, G.R.A.S. 43BA, developed with and for the hearing aid industry.

Through close collaboration with global leaders, we found an increasing need for test of modern hearing protection devices and hearing aids across the full audible range. In accordance with industry needs and wants, G.R.A.S. Sound & Vibration designed these test solutions to offer our partners better data – leading to better end-user products and hopefully a higher quality of life for those affected with hearing loss.

We look forward to seeing you at the next tradeshow, but in the meantime please visit us at or call at 33.425.1201 to see how we can help.

CanJam 2015

CanJam is a fantastic show dedicated to audio aficionados – especially those with an interest in headphones. With 50+ exhibitors showcasing their goods, attendees were free to roam and sample the many audio delights, as well as attend panel sessions on a variety of topics.

G.R.A.S. obviously enjoys working with this diverse and passionate industry, and we are seeing test and measurement fill an even bigger role (and supporting subjective evaluations further) in the research and development phases. Our portfolio of headphone measurement systems is clearly of interest to the industry. They are accurate, repeatable and standardized – with great versatility.

The 43AG is the tabletop solution for R&D and QA. The 45CA is the jack-of-all-trades that is efficient in a production line setting, and effective in an R&D lab. The KEMAR is the unequivocal gold standard for headphone and earphone measurements. In addition to simply being an interesting and enjoyable show, the management team had asked me to participate in the panel on headphone measurements. I was happy to oblige and provide my 2 cents from a test equipment manufacturer's perspective. The 2 x 1 hour panel sessions were well attended and fielded plenty of questions from the audience. A big ‘Thank you!’ to both the team, as well as my co-panelists: Skylar Gray, Tyll Hertsens, and surprise guest Rowan Williams.