Rahe-Kraft was appointed to design, predict and commission the complete public address system for the new Dubai airport terminal. The system consists of approximately 4.000 ceiling loudspeakers, 600 passive arrays and about 140 active arrays. Only 18 active DSP-controlled loudspeakers service the huge baggage claim hall (235 x 220m).
The commissioning of the system was conducted by Jakob Kraft personally. Due to the large distances, wired measurements were impossible in many areas, thus a handheld meter was the only choice for reliable measurements in these areas.
After completing the project successfully Jakob Kraft reported: "The AL1 with the STI-PA option for speech intelligibility measurement was an indispensable help at this important assignment. I was able to make several hundred STI-PA measurements in just one night only by myself. An operator in the main switch room enabled the STI-PA test signal from zone to zone, allowing me to verify the speech intelligibility at all assigned measurement positions.
"In Dubai I learnt to appreciate the Acoustilyzer for such onsite projects. The typical STI-PA test results in the new terminal 3 are in the range from 0.50 - 0.65 STI. Thus since the opening of the airport, the public address system runs to the client's satisfaction."
(Jim Evans)
