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Gedrag van automobilisten bij evacuatie van een tunnel

Gedrag van automobilisten bij evacuatie van een tunnel

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60<br />

locationrelative to the loudspeaker and the influence of themnnel acoustics.The noise<br />

spectrum~ measured close to the loudspeaker, the "scuree' spectrum, roughly approximates<br />

pink noisein the 100-16,000 Hz frequencyrange, but withdeviationsofoverto15 dB at<br />

certain frequencies (a 'dip' ar<strong>een</strong>d 4 kHz and'peaks' around 8 kHz and 1 kHz). This means that<br />

the spec~ln:is essentiaHy'flat' 011a logarithmic· frequency scaïe, and sl0JX:'~.

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