Spectral feature computations continue to be a very difficult problem for accurate machine recognition of vowels especially in the presence of noise or for otherwise degraded acoustic signals. In this work, a new peak envelope method for vowel classification is developed, based on a missing frequency components model of speech recognition. According to this model, vowel recognition depends only...

Abstract This study investigates the perception of three Mandarin high vowels /i, u, y/ after dental, retroflex, and palatal fricatives affricates (/s/-/ʦ/-/ʦʰ/; /ʂ/-/tʂ/-/tʂʰ/, /ʨ/, /ʨʰ/, /ɕ/) by native English speakers. The results perceptual identification categorization experiments show that among target vowels, front rounded vowel /y/ presents greatest challenge for They have a significant...

this paper addresses the validity of two hypotheses concerning changes of vowel quality in persian. the theory of centralization claims that there is a strong correlation between vowel duration and vowel quality. as vowel duration is shortened in unstressed contexts, the size of the vowel inventory reduces toward the center, leading to considerable overlap between different categories and a red...

Sex differences in vowel acoustics were found to be mediated by words' frequency of use and phonological neighborhood density. Larger sex differences in vowel-space expansion were found for words with high frequency of use and for words with small phonological neighborhoods, than for words than for words with low frequency of use and high neighborhood density. Results suggest that talkers' prod...

Vowel identification and production performance for an experimental group of 35 Japanese subjects was measured before and after a 6-week period within which subjects received identification training with feedback. A control group of 9 Japanese subjects was administered the same identification and preand posttest, separated by the same 6-week interval during which they did not receive the experi...

Foreign-language learning is a prime example of a task that entails perceptual learning. The correct comprehension of foreign-language speech requires the correct recognition of speech sounds. The most difficult speech-sound contrasts for foreign-language learners often are the ones that have multiple phonetic cues, especially if the cues are weighted differently in the foreign and native langu...

Vowel perception ability for 16 prelingually deafened children using Nucleus 22-channel cochlear implants was studied at 12, 24, and 36 months postimplantation. Information transmission analysis was used to evaluate the effectiveness of the implants in conveying the essential cues required for accurate vowel identification and whether the cues used varied with experience or device use. Individu...

We describe a model which jointly performs word segmentation and induces vowel categories from formant values. Vowel induction performance improves slightly over a baseline model which does not segment; segmentation performance decreases slightly from a baseline using entirely symbolic input. Our high joint performance in this idealized setting implies that problems in unsupervised speech recog...

A system for online recognition of handwritten Telugu script is presented. A handwritten character is constructed by executing a sequence of strokes. A structureor shape-based representation of a stroke is used in which a stroke is represented as a string of shape features. Using this string representation, an unknown stroke is identified by comparing it with a database of strokes. A full chara...

Four chinchillas were trained to respond differently to /t/ and /d/ consonant-vowel syllables produced by four talkers in three vowel contexts. This training generalized to novel instances, including synthetically produced /da/ and /ta/ (voice-on-set times of 0 and +80 milliseconds, respectively). In a second experiment, synthetic stimuli with voice-onset times between 0 and +80 milliseconds we...