IRIS

IRIS is a powerful and user friendly measurement system for capturing and analysing room impulse responses in 3D. Beside measuring standard room acoustic parameters (ISO 3382) IRIS allows to analyse room reflections, theirs direction and theirs intensity.

Visual output

• 3D colour-coded representation of sound rays
• Length indicates relative sound intensity level, angle is the ray direction, and colour represents time of arrival
• Separate music and speech arrival time categories
• Interactive 3D rotation and zoom
• Dynamic range and time resolution adjustment
• Specific angle and level information for individual rays for detailed analysis
• Broadband and octave band filtered views

Impulse Response

• Traditional omnidirectional waveform views
• Dynamic interaction between the IRIS plot and waveform view – rays selected in one view are highlighted in the other view
• Automatic detection of onset time with manual adjustment

  

   

3D Impulse Response Capture
The IRIS measurement system utilises a compact tetrahedral microphone array – a Core Sound TetraMic – which is placed at the desired receiver position. The room is excited by a loudspeaker at the source position, driven with a single swept sine stimulus. The IRIS software provides the stimulus, records the room’s response and processes and visualises the results immediately.

Compact Hardware Kit

• IRIS is an affordable software and hardware 3D impulse response measurement system
• The system consists of:
  • IRIS Software and USB dongle
  • Core Sound TetraMic
  • MOTU 4pre USB audio interface
  • Custom phantom power and microphone cable adapters
  • 30 metre CAT5E STP microphone array extension cable
  • Pelican Storm case with custom foam cut-out

More information on the IRIS website www.iris.co.nz