The AAAC is a not for profit peak body representing professionals who are involved in delivering acoustic solutions to a wide range of clients and the community. The AAAC was formed to advance the acoustical consulting profession and to safeguard the interested of the client and public served by acoustic consultants. AAAC members are competent and capable in their field of expertise. They provide professional unbiased advice and deliver practical innovative and cost effective solutions for their clients. The AAAC as an organisation has no direct employees. For the purposes of the LinkedIn page only, the current volunteer Executive Committee members are listed as employees.
External link for AAAC - Association of Australasian Acoustical Consultants
1 Acoustic St
Auckland, Auckland 1000, NZ
As you sit down to a drink after all the excitement of Christmas …
🎶☕ Your morning mug makes music! Tap your coffee cup before & after adding instant coffee or cocoa—the pitch drops, then rises as the foam clears. It’s called the Hot Chocolate Effect! Curious why? Read the #Acoustics Lay Language Paper here: https://lnkd.in/ggFVynRb #HotChocolateEffect
Review: Underwater acoustic communications Underwater acoustic communication is crucial for many marine applications. This review, published in Nature, highlights the fundamentals of acoustic propagation, signal processing and networking, and explores directions for future research. While acoustic waves outperform radio frequencies underwater, they face significant challenges, including: - Low frequencies and limited bandwidth. - Slow propagation and multipath effects. - Frequency-selective distortion and Doppler shifts. This review highlights the focuses of current research and what future studies will aim to address. Read the review: https://lnkd.in/gKeEdMkV #paywalled
Study: Vibration and pressure pulsation elimination in a reciprocating compressor suction system using an acoustic filter As many engineers will agree, the vibration from industrial compressors can pose not just a nuisance but genuine risks to workplace safety. Serious vibrations in compressor systems can lead to a range of issues, such as loss of production efficiency, malfunction of instruments, cracks in pipelines, structural fatigue failure, and unscheduled system shutdowns, according to a study just published in the journal Nature. The study identifies excessive pressure pulsations in the suction bottle and strong mechanical coupling as root causes of vibration-induced failures. The solution involved splitting the suction bottle into two parts and using one as an optimised Helmholtz resonator to suppress pressure pulsations and avoid resonance. Implementing these changes reduced vibration by 14.3–61.1%, pressure pulsation by 75.56%, and increased compressor capacity by 6.82%. The acoustic filter proved a cost-effective measure to reduce vibration and improve system reliability. Read more: https://lnkd.in/gjHmJPu8
The party season continues for our AAAC member reps who showed up in good numbers to our Western Australian Christmas meet-up, held at The Station in South Perth. 🌲 🥂 Representatives and colleagues attended from these member firms: • Herring Storer Acoustics (HSA) • Lloyd George Acoustics (LGA) • Gabriels Hearne Farrell (GHF) • AECOM Attendance list and photo left to right is: Geoff Harris (HSA), Matthew Moyle (LGA), Tim Reynolds (HSA), @Paul Daly herring (HSA), Benjamin Farrell (GHF), Kingsley Hearne (GHF), Terry George (LGA), Michael Ferguson (GHF), Rachel Foster (Aecom). Thanks to all who attended and we wish everyone a joyous and safe holiday break! 🏖️
It's the most wonderful time of the yeeeaaarrr! That's right, Christmas spirit, Christmas parties, beer flowing, stories shared. Our AAAC Member reps (and some guests) are celebrating 2024 in style. Below we have Melbourne, NZ South Island and NZ Auckland celebrations in full swing. Thanks to everyone and keep your pics coming.
There is enormous potential in acoustic biofabrication, according to a new review article published in Nature. As scientists continue developing advanced techniques to create structures that mimic human tissues, sound-based technologies are a less explored area but offer real promise. Biofabrication—the generation of complex and biologically functional products from raw materials such as living cells or molecules—includes acoustic-based cell assembly and acoustic-assisted scaffold fabrication, applications that are safe for cells and allow precise, high-speed assembly of complex structures. By combining sound-based methods with traditional approaches, researchers see great potential for revolutionising tissue engineering and medical science in the near future. Read the review: https://lnkd.in/gyT8n6gt
New AI-driven headphones from the University of Washington enable selective voice isolation in noisy environments—even if the person moves—using advanced audio and visual technology. How does it work? Researchers at the university have developed AI-powered headphones capable of isolating and amplifying the voice of a single speaker in a noisy environment. By briefly focusing on a person for 3-5 seconds, the system “enrols” their voice and uses AI to filter out surrounding sounds, even as the person moves. Existing ANC earphones are directional and work by tracking head position rather than gauging distance. This innovation combines bone conduction microphones and computer vision to achieve precise audio targeting, offering potential applications in crowded settings, such as conferences or parties, where hearing one person is challenging. What are the applications? The device could enhance accessibility and focus in communication-heavy situations. There are plans to develop the technology so it will enhance hearing aids and noise-cancelling earbuds. Learn how they created the prototype: https://lnkd.in/gBTPgraB #noisecancelling #socialacoustics
The longstanding acoustic issues with David Geffen Hall were the primary reason it underwent a $550 million renovation. “Tear the place down and start over again” was the blunt advice of one conductor. The revamped hall—home of the prestigious New York Philharmonic—features improved sound quality and intimacy. However, while musicians and guest artists praise the hall's clarity and resonance, some critics are not so charmed. Learn more: https://lnkd.in/gzrHqqqw #DavidGeffenHall #HallAcoustics
While there is no cure for autism, there are some therapies and environmental interventions that significantly improve an autistic person's quality of life. For that reason, acoustical engineers have an important part to play in helping those with autism—a neurological condition often diagnosed in adults as well as children. Understanding how autistic individuals experience sound is vital for creating inclusive and accessible spaces. A new paper published in Acoustics Today, by researchers from Brazil and USA, discusses autism and its relationship with indoor acoustics. The authors provide an overview of autism, its history, diagnosis methods, and the concept of sensory sensitivity in autistic individuals. They also offer strategies for enhancing acoustic accessibility in buildings and learning environments in particular. Ultimately, the authors highlight the need for a more nuanced approach to acoustic design that considers the diverse sensory experiences of the autistic community. Learn more: https://lnkd.in/geKVnDER #autism #ASD #inclusion #accessibility