Archive for category Press Release
When Sound & Communications needed some industry perspective on diffusion, they decided to go to the source. Acoustics First has been developing sound diffusers for decades, and has done some of the most comprehensive research on developing testing standards for diffusion and reflected acoustic energy with the ASTM.
Acoustics First’s chief science officer, Jim DeGrandis, covers why diffusion is so much more complex than absorption in the February 2020 edition of Sound & Communications.
Acoustics First would like to remind everyone that it’s the little things that matter…
…remember to wash your hands and stay safe.
The importance of sound in culture, entertainment, safety, communication, and in defining the human experience is many times taken for granted – but not this year! 2020 has been designated the International Year of Sound, and throughout the year will be many special events focusing on the impact of sound and educating people about the importance of sound in enriching our lives.
Kicking off this worldwide event was an opening ceremony held on January 31st, in Paris at Sorbonne Grand Amphitheatre – which included supporters from across the globe who came to celebrate sound! Acoustics First was there to support this launch!
There were talks from many prominent members of the acoustic and physics societies including:
Prof. Gilles Pécout (Rector, Académie de Paris)
Prof. Jean Chambaz (President, Sorbonne Université)
Prof. Mark Hamilton (President, International Commission for Acoustics)
Christian Hugonnet (President, La Semaine du Son)
Prof. Vincent Gibiat (President, Société Française d’Acoustique)
Prof. Michel Spiro (President, International Union of Pure and Applied Physics )
Dr. Shelly Chanda (World Health Organization Representative)
Marion Burgess (IYS2020 Co-Organizer)
Prof. Jean-Dominique Polack (IYS 2020 co-organizer)
Prof. Michael Taroudakis (Moderator)
They debuted a short film produced by the International Commission for Acoustics and sponsored by i-ince called “Sound of our Life” directed by Antonio Fischetti – which shines a light on the different ways noise and sound impact our lives.
There were two sound exhibits at the ceremony, showing different ways to use speaker arrays and for different reasons. One was for a driver and passenger listening to different music in a car, the other was a novel sound pillar that had different sounds travelling around the circumference.
There were also two cultural music events. The first was a musical interlude performed by Maxime Perrin (accordion) and Samuel Thézé (bass clarinet). The second was the “Révolutions Vocales” concert performed by Compagnie VocAliques, which was translated into English for this international audience.
Following the ceremony was a reception in the beautiful ballroom, where attendees could reflect on the ceremony and discuss the different events planned for this year.
Check out the Official International Year of Sound website at https://sound2020.org/
When Acoustics First® was approached with the ideas for the Main Hall of the Kentucky Center for African American Heritage (KCAAH), they needed acoustic materials that would not only work to acoustically tame the large space, but to have some be the focal point for attention – while others needed to blend in.
Aukram Burton of KCAAH wanted to have large portraits of civil rights icons, not only nationally, but paying particular attention to leaders with a connection to Kentucky. He also wanted to have large panels with quotes from these figures. These would be a custom printed Silent Pictures®/Sonora® Baffle Hybrid – with a 1″ Custom printed Silent Pictures® panel on one side, and a grey fabric wrapped Sonora® Baffle on the back. These would maximize sound absorption due to all of the surfaces being exposed to sound – while being aesthetically significant to the space. Their sheer size presented some technical challenges – with the portraits being 4′ x 8′ and the quotes being 4′ x 10′ – creating custom artwork on this scale required many technical consultations, as many photographs were not easily scaled to this size.
They did not want the other treatments to distract from the portraits, so they chose to install large Cloudscape® Baffles in a gray material that closely matched the gray color scheme of the support beams, trusses, and HVAC elements that are exposed and prevalent in the hall. This allowed the large 4′ x 8′ baffles to blend into the background, while still taming the acoustics of the large hall. The acoustics make the hall feel like a much more intimate venue than its imposing size suggests.
To get the full effect of the visual impact of the space, Aukram sent over a video tour of the facility.
Students at the Frost School of Music had an “ear-opening” experience when their Computational Psycho-acoustics class was lectured by Jim DeGrandis of Acoustics First last month. The topics ranged from engineering to human perception of ultrasonic frequencies. The students were exposed to concepts and demonstrations of ultrasonic frequencies which have been modified in ways to make them audible, and ultrasonic anomalies affecting the audible range in ways that are very blatant and obvious.
One of the most stark examples of “audible ultrasound” being the demonstration of a Parametric Speaker, which modulates the ultrasonic carrier to produce very directional audible frequencies.
Jim also spoke at the student forum about misconceptions of what it really means to be “in the industry” …and did an encore demo of the Parametric Speaker – which had apparently been such a novel experience for the Psycho-Acoustics class that they ‘demanded’ it be experienced again by a wider audience. (and it was just plain fun!)
Fall is always a busy time of year here at Acoustics First®. Besides the AES, our folks have also been making the rounds with the ASTM and the ASA. The ASA in Canada was particularly interesting, with much discussion about the use of computer modeling to predict the acoustic performance of sound diffusers. Our own Jim DeGrandis co-authored a paper with Dr. Hassan Azad and Ronald Sauro of NWAA Labs on using laboratory measurements to improve acoustic simulations.
The ASA also just released a promotional video for their meetings.
If you look closely, you can spot Jim 0:43 seconds into this short video from the ASA. Of course he’s instantly recognizable by his trademark hat!