Influence of varying room acoustic conditions in a speech-in-noise test with radial moving masker, for young and elderly listeners
* Presenting author
In real-life listening situations, we often listen to speech in the presence of masking noises inside rooms with different room acoustics conditions. Likewise, most everyday listening situations consist not only of multiple sound sources both stationary and moving, but also of numerous acoustic reflections, reaching our ears at different time and intensity, caused by the physical environment. In a speech perception in noise task, acoustic reflections can be beneficial, increasing the speech signal energy reaching the listener, or detrimental, superimposing on the direct sound altering the waveform. This study aims to show the effect of different room acoustic conditions in a speech-perception task with a radial moving masker. A speech-in-noise test was performed with young and elderly listeners, using binaural room simulation to create a headphone-based virtual acoustic environment. Listeners are asked to identify target digit-triplets, under the presence of a stationary or moving masker. The movement of the masker is a radial movement from a distance of 0.5 m to 1.8 m at a constant azimuth of 70°. All masker configurations were assessed over three room acoustic conditions: anechoic, acoustically treated room and acoustically untreated room. Results show differences in speech perception between stationary and moving maskers.