Einfluss von verschieden Lärmkonditionen auf die Höranstrengung von Erwachsenen
- Auditorische Szenenanalyse,
Bachelorarbeit von Batlle, Roser
This thesis consists of a study with adults in respect to educational institutions with the aim to evaluate speech perception and listening effort depending on the noise condition. For this purpose three different noise conditions will be simulated: speech-shaped noise (SSN), which is characterized for having a similar spectrum as the average long-term spectrum of a speech signal and is considered to be the most effective energy masker of speech; irrelevant and relevant multi-talker babble (IMTB and RMTB, respectively), which consists of several people simultaneously talking in a foreign language for the listener, in IMTB, or in the same or similar language, in RMTB. These noises will be included individually as background noises in a dual-task listening experiment. The first task will consist of the measurement of time response and percentage of correct words, where participants will have to identify stimuli word and select the corresponding image between four possible options (e.g. Kopf - Topf - Zopf - Frosch). Then, the second task will focus on the measurement of reaction time after a visual stimuli, in which participants have to press a button when the light bulb in the screen turns on. This experiment will test a total of 24 conditions by modifying signal-to-noise ratio, target and distractor position combination and type of noise.