An experiment was conducted to investigate how changes in spectral content influence loudness judgments. Six listeners were asked to discriminate sounds, which were of one second duration and changing in level every 0.1 s. In one condition the first half of the sound was low-pass filtered and the second half high-pass filtered. In a second condition the opposite order was used. In a third condition no filtering was applied and the frequency spectrum was simply white noise. The results were analyzed using a statistical method, which assigns relative weights to the ten temporal segments. In this way individual weighting curves were obtained for each condition. Listeners tended to emphasize the beginning of the sound in their loudness judgments. When the frequency spectrum changed in the middle of the sound, however, the weighting of the onset of the new spectral content was emphasized as well. This outcome is inconsistent with overall temporal integration, and argues for a cognitive mechanism allocating attention to changes in an event sequence.
|Status||Udgivet - 2005|
|Begivenhed||149th Meeting of the Acoustical Society of America - Vancouver, Canada|
Varighed: 16 maj 2005 → 20 maj 2005
Konferencens nummer: 149
|Konference||149th Meeting of the Acoustical Society of America|
|Periode||16/05/2005 → 20/05/2005|
Bibliografisk noteAbstract in The journal of the Acoustical Society of America, Vol.117, No.4, Pt. 2, April 2005.
Paper id 1pPP8