ABSTRACT

Studies of speech perception can lead to deeper understanding of the general rules of auditory pattern perception. This chapter presents evidence indicating that speech perception involves a holistic or global recognition of patterns formed by component speech sounds without resolution into an ordered sequence of phonemes. Speech is highly redundant, and connected discourse can be perfectly intelligible when either high-pass filtered or low-pass tiltered near the crossover frequency of approximately 1500 Hz. Phonemic restorations occurring with broadband speech have been used to assess the extent to which context following an obliterated segment could be used to determine the segment's identity. Phonemic restoration and temporal induction have been introduced into models of computational auditory scene analysis and automatic speech recognition. An additional experiment with narrowband speech and narrowband noises demonstrated that, as with temporal induction, lack of spectral correspondence of speech and noise inhibited contralateral induction.