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h the Europem-Union fmded project AUDIS (AUditory DISplay) a mdtipqose auditory display for 3-D hearing applications is being developed, A main god is to develop a Special sound generator in combination with an auditory-symbol datibase that cm e. g., be used in avionics and automotive industies. As the project refies h=vity on binati technology and, hence, on the avatiability of reliable human~~da~a specird program for collecting these data has been undetien, h the course of this program, a round-robin test has been performed in four different laboratories. Differences in the mmsured &ta across the different laboratories have been analysed. The analysis resmlted in recommendations for common measuring procedures to be applied. A catiog of~TFs has then been collected, and percepti verification test have been performed. A sampler CD of the catiog wi~be avdable through the hterature distribution system of the European Acoustics Association, DOC~A ACUSTICA. For detis please visit

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Sound quality evaluation of fan noise is a challenge due to its spectral and temporal structures. Tonal components and modulated sounds are often the cause of customer complaints. Thus, besides frequency-weighted level like dB(A) or loudness, other parameters are required. Some years ago, a "Hearing Model" was developed with the intention of explaining and describing psychoacoustic effects. Applying the Hearing Model to sound quality tasks allows evaluating the spectral and temporal patterns of a sound ("Relative Approach" analysis) where absolute level or loudness is often without significance. The Relative Approach analysis emphasizes all relevant signal components concerning human auditory perception: tonal and transient signals. © 2009 Institute of Noise Control Engineering.