Modeling subject responses in a reproducible noise masking task

Modeling the masking of formant transitions in noise

Formant transitions are critical for identifying the place of articulation for consonants. If these transitions are masked by background noise, perceptual confusions can occur. To better understand the masking of formant transitions, masking thresholds were measured for tone glides and single-formant trajectories of varying frequency extent (0-3 ERBs), duration (10, 30 and 100 ms), and center f...

Desynchronizing responses to correlated noise: A mechanism for binaural masking level differences at the inferior colliculus.

We examined the adequacy of decorrelation of the responses to dichotic noise as an explanation for the binaural masking level difference (BMLD). The responses of 48 low-frequency neurons in the inferior colliculus of anesthetized guinea pigs were recorded to binaurally presented noise with various degrees of interaural correlation and to interaurally correlated noise in the presence of 500-Hz t...

The masking-level difference in low-noise noise.

In experiment 1 NoSo and NoS pi thresholds for a 500-Hz pure tone were obtained in a low-fluctuation masking noise and a high-fluctuation masking noise for six normal-hearing listeners. The noise bandwidth was 10 Hz. In agreement with previous investigations, the NoSo thresholds were lower in low-fluctuation noise than in high-fluctuation noise. For three listeners, NoS pi thresholds were simil...

Masking Variables in Mixture Modeling

Noise frame duration, masking potency and whiteness of temporal noise.

PURPOSE Because of the limited contrast range, increasing the duration of the noise frame is often the only option for increasing the masking potency of external, white temporal noise. This, however, reduces the high-frequency cutoff beyond which noise is no longer white. This study was conducted to determine the longest noise frame duration that produces the strongest masking effect and still ...