Noise Vibration and Harshness
Noise Vibration and Harshness (NVH) is a key component for the transportation industry. Everything from engines and drivetrain to wind and road surfaces can contribute to excessive noise in vehicles. Being able to identify and eliminate unnecessary noise can increase the value of vehicles to customers by providing a better overall user experience.
VisiSonics patented technology is able to assist in the capture and localization of such sounds. Using the RealSpace™ Panoramic Audio Camera, one can isolate where sounds are coming from in any setting, such as a car cabin, allowing the user to quickly pinpoint potential problem areas and begin troubleshooting faster than ever before.
“Noise, vibration and harshness is a key study for auto manufacturers. The fact that the most prevalent noise, the combustion engine, can be eliminated, brings on a whole new suite of challenges. The RealSpace™ Panoramic Audio Camera is a great tool in helping to identify and localize those challenges.”
–Garland Dughi, Tesla Motors Noise and Vibration Specialist
The videos below show the setup and usage of the RealSpace 3D Audio/Visual Camera and an overview of the VisiSonics RealSpace Accoustic Analysis Tool.
Working with microphone arrays is often frustrating for students and researchers alike. For those working in and learning about the field of acoustics, expenses can quickly escalate; everything from the base costs of microphones and wiring, to the amount of time it takes to set up the cumbersome equipment becomes an issue. Additionally, as the number of microphone arrays is increased, the ability to process data becomes increasingly challenging. Often times, because of the number of microphones being used, data must be processed off-line after it is collected.
Using VisiSonics’ Digital Microphone Array Technology, these frustrations can be minimized. This patented equipment has the ability to analyze in real-time and takes only minutes to set up. With its user-friendly interface, people can spend more time developing new array configurations, algorithms, and analyzing data, and less time dealing with yet another cabling issue.
“One of the reasons I’m excited to use VisiSonics [Array Microphones] is the large number of audio channels, which will give the resolution and harmonic order necessary to produce results with the high level of accuracy and precision required for cutting-edge acoustics research .”
–David Bradley, Vassar College
VisiSonics technology gives architects the ability to visualize sound in listening spaces and pinpoint the directionality, timing, composition and location of each sound reflection with a forensic-like approach, all in real-time and all in a uniquely portable package. Powerful analysis software makes it possible to perform on-the-spot comprehensive spatial acoustical analysis of listening spaces for the evaluation and improvement of speech intelligibility and sound quality.
Concert halls and critical listening spaces, when properly tuned, provide not just a great audio experience but often pair that with a great visual experience. In addition, it is a unique tool to help your company easily and accurately identify troublesome acoustic artifacts such as noise leaks, late reflections and slapback problems. The Audio Camera VR payback provides to your customer the best “venue” to demonstrate your company’s precision tuning capabilities.
“We knew the [Paramount Theater] was going to be a challenge. The venue is primarily made of brick and concrete, which leads to a highly reverberant space. VisiSonics solution had an easy setup and gave us instant, real-time feedback, allowing us to quickly identify problematic ‘hot spots’ and apply solutions that dramatically improved the acoustic clarity of the venue, without effecting the ambience, environment and atmosphere of the theater.”
–Ryan Beck, Maryland Sound International (MSI)
This video demonstrates the Audio Camera’s ability to visualize audio sources and reflections. In detail, it presents a slow-motion video of sound reflections in a concert hall at the University of Maryland. You will see the initial “chirp” from the stage, followed by the subsequent reflections from surfaces in the listening space. At the 20 second mark in the video, you can see a diffuser in the back of the room spreading the sound reflection and eliminating a slapback problem.