Fast processing models effects of reflections on binaural unmasking

Sound reflections and late reverberation alter energetic binaural cues of a target source, thereby affecting its detection in noise. Two experiments investigated harmonic complex tones, centered around 500 Hz, noise, virtual room with different modifications simulated impulse responses (RIRs). Stimuli were auralized using the Simulated Open Field Environment’s (SOFE’s) loudspeakers anechoic space. The was presented from front (0°) or 60° azimuth, while an noise masker simultaneously at 0°. In first experiment, early progressively added to RIR thresholds reverberant measured. For frontal sound decreased adding within 45 ms, whereas for lateral remained constant. second removed kept along direct sound. Results 0° show that even as 150 ms reduce compared only A model sluggishness component following computation unmasking short windows predicts measured literature results better than when large are used.