An interactive Hebbian account of lexically guided tuning of speech perception.

Perception-guided and phonetic clustering weight tuning based on diphone pairs for unit selection TTS

The quality of corpus based text-to-speech systems depends on the accuracy of the unit selection process, which relies on the values of the weights of the cost function. This paper is focused on defining a new framework for the tuning of these weights. We propose a technique for taking into account the subjective perception of speech in the selection process by means of Interactive Genetic Algo...

Divide and conquer: How perceptual contrast sensitivity and perceptual learning cooperate in reducing input variation in speech perception.

Listeners have to overcome variability of the speech signal that can arise, for example, because of differences in room acoustics, differences in speakers' vocal tract properties, or idiosyncrasies in pronunciation. Two mechanisms that are involved in resolving such variation are perceptually contrastive effects that arise from surrounding acoustic context and lexically guided perceptual learni...

Computational and behavioral investigations of lexically induced delays in phoneme recognition

Previous studies have failed to demonstrate lexically induced delays in phoneme recognition, casting doubt on interactive models of speech perception. We present TRACE simulations that explain these failures: previously tested conditions failed to produce lexically induced delay effects because the input was too unambiguous and the control condition was conflated with lexical status and neighbo...

Lexically guided phonetic retuning of foreign-accented speech and its generalization.

Listeners use lexical knowledge to retune phoneme categories. When hearing an ambiguous sound between /s/ and /f/ in lexically unambiguous contexts such as gira[s/f], listeners learn to interpret the sound as /f/ because gira[f] is a real word and gira[s] is not. Later, they apply this learning even in lexically ambiguous contexts (perceiving knife rather than nice). Although such retuning coul...

Journal of Experimental Psychology: Human Perception and Performance Lexically Guided Phonetic Retuning of Foreign-Accented Speech and Its Generalization