HEAD VISOR Acoustic Cameras – Microphone arrays for localizing sound sources using beamforming technology

HEAD VISOR flex

The HEAD VISOR acoustic camera measurement system comprises the software and a... 

The HEAD VISOR acoustic camera measurement system comprises the software and a microphone array. The system uses beamforming technology to pinpoint sound sources in real-time. Various microphone arrays are available for different applications. Some are scalable and customizable; all can be activated and controlled with HEAD VISOR software.

When the microphone array is switched on, HEAD VISOR software provides video images with simultaneously overlaid, high-quality acoustic source mapping. This feature lets you quickly obtain the necessary information about the sound sources without delay - identify their location, sound pressure level, and spectrum.

All three hardware versions combine beamforming with MultipleEye technology, using multiple cameras to record the video images in real-time. This process enables distances to all points in the image to be determined with exceptional precision and allows continuous, synchronous video images in real time.

The following HEAD VISOR microphone arrays are available for the acoustic camera:

  • HEAD VISOR VMA V: Lightweight, mobile, hand-held, and extendable microphone array with an integrated display and controls for the most flexible applications and results showing directly on the device (0.3 m / 1.0 m diameter)
  • HEAD VISOR VMA III.0: Lightweight microphone array for stationary applications (for example in wind tunnels; 3.0 m diameter)
  • HEAD VISOR flex: Modular microphone array for sound source localization over large distances or at low frequencies (arbitrary dimensions)
plus Less

The HEAD VISOR acoustic camera measurement system comprises the software and a microphone array. The system uses beamforming technology to pinpoint sound sources in real-time. Various microphone arrays are available for different applications. Some are scalable and customizable; all can... 

The HEAD VISOR acoustic camera measurement system comprises the software and a microphone array. The system uses beamforming technology to pinpoint sound sources in real-time. Various microphone arrays are available for different applications. Some are scalable and customizable; all can be activated and controlled with HEAD VISOR software.

When the microphone array is switched on, HEAD VISOR software provides video images with simultaneously overlaid, high-quality acoustic source mapping. This feature lets you quickly obtain the necessary information about the sound sources without delay - identify their location, sound pressure level, and spectrum.

All three hardware versions combine beamforming with MultipleEye technology, using multiple cameras to record the video images in real-time. This process enables distances to all points in the image to be determined with exceptional precision and allows continuous, synchronous video images in real time.

The following HEAD VISOR microphone arrays are available for the acoustic camera:

  • HEAD VISOR VMA V: Lightweight, mobile, hand-held, and extendable microphone array with an integrated display and controls for the most flexible applications and results showing directly on the device (0.3 m / 1.0 m diameter)
  • HEAD VISOR VMA III.0: Lightweight microphone array for stationary applications (for example in wind tunnels; 3.0 m diameter)
  • HEAD VISOR flex: Modular microphone array for sound source localization over large distances or at low frequencies (arbitrary dimensions)
plus Less

Highlights

  • Acoustic camera with beamforming technology for localizing sound sources online
  • Customizable, scalable system for diverse applications
  • Interactive working is possible because changes are visualized in real-time without delay 
  • Raw data workflow, all parameters can also be adjusted after recording
  • Convenient licensing options for any need, scalable software via tool packets
  • Extremely high location accuracy
  • MultipleEye technology: Continuous, synchronous video images in real-time and the ability to determine distances to all points in the image with exceptional precision
  • Unique algorithms to increase spatial resolution and dynamics (e.g., neural deconvolution)

Applications

  • Troubleshooting
  • Analyzing and optimizing sounds
  • Auralizing locations that radiate the most sound energy
  • Test benches
  • Detecting sound-radiating components on test pieces
  • Room and structural acoustics
  • Leak detection/testing
  • Visualizing acoustic weak points
  • Wind tunnels
  • Wind turbines
  • Analyzing the acoustic effects of different rotor designs
     

Features

  • High-quality hardware components for HEAD VISOR beamforming systems
  • VMA V: Mobile array with optional ten spiral arms (60+60 microphones), an integrated display, battery, depth camera, and front end (0.3 m / 1.0 m diameter)
  • VMA III.0: 14 spiral arms (112 microphones), 3 cameras, and integrated front end (3.0 m diameter)
  • HEAD VISOR flex: Customizable microphone array with camera module and HEADlab technology; dimensions, number of channels, and geometry are all modifiable
  • All arrays are linked to a PC via a single network cable
  • Additional sensors can be connected (integration of HEADlab products)
  • Near-field HEAD VISOR Probe can be connected to microphone arrays to extend the lower frequency limit

Variants

HEAD VISOR VMA V

Fast, intuitive, for professional requirements. The hand-held, battery-powered, light HEAD VISOR VMA V body has 60/120 microphones across a diameter of 0.3 m / 1.0 m. An integrated 7” multi-touch display, control buttons, and a depth camera guarantee an intuitive and efficient operation. Distances between the microphone array and sound source can can vary from 30 cm to 200 m, with dynamics up to 40 dB in a 250 Hz–20 kHz range.

 
HEAD VISOR Probe

HEAD VISOR Probe

The near-field HEAD VISOR Probe helps with investigating stationary sounds at frequencies below 600 Hz and acts as a supplement to the microphone arrays. Sound is detected directionally via two microphones at the tip of the probe. MultipleEye technology determines the current position of the probe in real time. The probe therefore allows specific sub-areas to be calibrated. The near-field HEAD VISOR Probe can be connected to the array, which allows a frequency range of 20 Hz–20 kHz to be evaluated.

HEAD VISOR VMA III.0

HEAD VISOR VMA III.0

The HEAD VISOR VMA III.0 array, with 112 microphones and a diameter of 3 m, is suitable for installation on a wall or ceiling, which means it can be used in, e.g., wind tunnels. The 14 arms allow dynamics of 10 dB (standard beamforming) or up to 30 dB (advanced algorithms) in a frequency range of 200 Hz–20 kHz.

HEAD VISOR flex

HEAD VISOR flex

HEAD VISOR flex is a modular microphone array for sound source location. Its configuration, size, layout and number of microphones can be adjusted to suit your needs. HEAD VISOR flex delivers extremely high accuracy for localizing sounds over large distances or at low frequencies of less than 100 Hz.