Brian D. Simpson

TL;DR: A database of speech samples from eight different talkers has been collected for use in multitalker communications research and the nature of the corpus, the data collection methodology, and the means for obtaining copies of the database are presented.

TL;DR: This study attempted to isolate the effects that energetic masking, defined as the loss of detectable target information due to the spectral overlap of the target and masking signals, has on multitalker speech perception through the use of ideal time-frequency binary masks.

TL;DR: Shifting one of two utterances spoken by a female voice towards a male voice produces a greater improvement in performance than shifting male towards female, and the increase in performance varied with the intonation patterns of individual talkers, being smallest for those talkers who showed most variability in their intonations patterns between different utterances.

TL;DR: In this experiment, head-related transfer functions were used to process stimuli in order to simulate a target talker and a masking sound located at different distances along the listener's interaural axis, showing that distance separation has very different effects on speech segregation for different types of maskers.

TL;DR: Results show that within-ear and across-ear speech segregation are closely related processes that cannot be performed simultaneously when the interfering sound in the unattended ear is qualitatively similar to speech.