Acoustic Camera. Listening with your eyes.
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Acoustic Camera. Listening with your eyes.

We are the pioneers in acoustic imaging systems – and world market leader! Acoustic Camera – The original. gfai tech’s Acoustic Camera was the first com mercially viable system to localize acoustic emis sions. Brought to market in 2001 as a pioneer technique, the Acoustic Camera has become a meta hor for beamforming systems over the p years. Contents. The Acoustic Camera – making sound visible Fast sound sources identification Field of application: Noise localization and reduction Field of application: Sound optimization Field of application: Fault and defect identification gfai tech’s...

Above: Measuring a mining bridge with the Star Array. Left: Measurement of a wind turbine Noise – Environmental sound pollution. Acoustic Camera – Listening with the eyes. Using their eyes, human beings can gather infor mation more quickly and with more flexibility than with any other sense organ. This is why complex processes are “visualized” and great technical effort is made to extend vision to fields that the eye usually cannot see. X-ray machines, magnetic resonance imaging devices and infrared cameras are only a couple of examples for technical instruments visualizing the invisible....

The Acoustic Camera. Intelligent problem solver – universally applicable. Acoustic quality assurance. Faults in machinery and plant installations can often be detected by a change in their noise emissions. An experienced mechanic can actually hear a fault. Some manufacturers rely on the excellent hearing skills of a few staff members to identify faulty products in the final quality control. How can tests like these be automated and made more objective? Noise measurement at the Colosseum in Rome. The solution: making sound visible – Fast and easy Product sound – Product quality. Sound is an...

Ring Array for exterior measurements visualizing acoustic sources in 2D. on-screen in a preview window. When you are done with the setup you just press the “shutter release button” – and that‘s it! The acoustic “fin gerprint” of the target object has been acquired. Photographing and filming sound. There is a simple, yet ingenious idea behind this revolutionary solution. A digital camera is used to acquire an image of the noise-emitting object. At the same time an exact defined array of micro phones records the sound waves emitted by the object. Dedicated software then calculates a sound map...

Fast results. Visualization in real-time or as acoustic fingerprint. Above: Sphere Array for interior measurements. Right: Visualization in 3D, mapping acoustic information on a 3D model. Intelligent system concept. Engineers in the industries work under immense pressure with respect to time and money. They need tools helping them to identify and to solve problems without creating new difficulties. Thus, the design of the Acoustic Camera is built upon modularity, ease of use and intuitive operation of the software. The system comprises the microphone array with the implemented camera, a...

Set-up for acoustic measurement of industrial plant and Acoustic Photos 2D. Noise reduction – A compelling task for industrial companies. Noise – an often underestimated pollutant. The human heart rate increases when exposed to sound levels above 65 decibels. At night, when cars and other vehicles only penetrate the sub consciousness, traffic noise can disturb human‘s health by affecting the quality of sleep. Legal requirements for the operation of technical devices are becoming more and more stringent. This is the case not only for planes and industrial installations but also for a lot of...

High precision noise investigation. Exact localization and identification of noise sources. Noise radiation from aircraft engines, gear and flaps and Acoustic Photo 2D. Accurately identifying and documenting noise sources – In real time. The Acoustic Camera can save an immense amount of time and corresponding money. Noise sources can be localized rapidly and very precisely from the position of the listener – even at distances of several hundred meters. Position of Sphere Array in aircraft cabin and Acoustic Photo 3D. The method has numerous advantages. Instead of placing microphones in a...

Above: Underhood measurement using a Ring Array. Left: Acoustic Photo 3D of an engine. Measuring acoustic emissions from a toothbrush – set-up and result. High-quality sound brings high-quality product. Sounds do not necessarily have to be loud to cause discomfort. In many cases there are sources far quieter than the dominant sound that seem to be psychoacoustically dominating. Some of the most significant examples for this phenomenon exist in the automotive industry where the Acoustic Camera has already been applied with great success. Rattling, hissing or clicking noises are undesired in...

Optimized spectrum of analysis. Enhanced and extended analysis methods in product design. Engine sound relating to crankshafts angle and rpm. Virtual scanning of a brake showing the location-selective spectrogram of mouse cursor. Space-, time- and frequency-selective measurements. The Acoustic Camera can extend the known stan dard time- and frequency-selective analysis and add a location-selective component. With this method not only the progression of the sound signal is shown but a sequence of acoustic images can be acquired: Acoustic films are generated. The analysis clearly shows which...

Time- and frequency-selective images (as highlighted in spectrogram) Multi sensor technology – Virtual sound studio. The more senses are used to gather information, the better human beings can recognize complex situations and act accordingly. The Acoustic Camera acts according to the same principle. When the measurement is finished, the acoustic image/movie can be replayed virtually – as if the running machine was scanned in realtime using a direc o al microphone. Sound ti n sources that are usually drowned by louder sources become audi le. The image can be b animated by the software...