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Nijs, L. (author), Saher, K. (author), Den Ouden, D. (author)People increase their vocal output in noisy environments. This is known as the Lombard effect. The aim of the present study was to measure the effect as a function of the absorption coefficient. The noise source was generated by using other talkers in the room. A-weighted sound levels were measured in a 108?m3 test room. The number of talkers...journal article 2008