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Perception of Animated Spectrogram of Speech, a Multi-word Test

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNAbstract

Publication date2013
Host publicationConverging Clinical and Engineering Research on Neurorehabilitation
EditorsJose L. Pons, Diego Torricelli, Marta Pajaro
Place of PublicationBerlin
Number of pages5
ISBN (Electronic)9783642345463
ISBN (Print)9783642345456
<mark>Original language</mark>English

Publication series

NameBiosystems & Biorobotics


This is a report on perception aspects of a novel method of spectrography, developed as an aid for the deaf. By this method an animation is displayed on a screen, showing the time-frequency variations of an ongoing speech signal in real time. Here we evaluate the ability of human subjects to learn the animations for some multi-digit number utterances (such as telephone numbers). A recognition score of about 68 percent (where zero means chance expectation) was obtained through a number of forced-choice tests involving 2- digit up to 5-digit number utterances. The human subjects, being all beginners, took the tests after about only 30 minutes of training course. The results suggest a potential utility of the system for the deaf.