Auditory Sketches: Very Sparse Representations of Sounds Are Still Recognizable
Fig 3
(A) For each category, performance (as measured by d') is displayed at each sparsification level. With the exception of voice sounds, performance was well above chance even at the highest sparsification level, 10 feat./s. For voice sounds, performance was at chance or even lower (negative d'), meaning that participants responded systematically anything but voices for these voice sounds. (B) Performance is displayed for auditory sketches and acoustic sketches. For bird and voice stimuli, performances were higher with auditory sketches, whereas for vehicles, the reverse pattern emerged. No differences were observed for instrument sounds. Error bars correspond to the standard error of the mean.