OBJECTIVE This clinical trial investigated the ability of concurrent speech segregation in hearing impaired children. The auditory behavioral responses and auditory late responses (ALRs) were compared between test and control groups prior to vowel auditory training and after 3 and 6 months of vowel auditory training to find the effects of bottom-up training on concurrent speech segregation in h...

Nasalization confounds the acoustic space by both crowding acoustic cues and also increasing the bandwidth of F1 which makes vowel identification, and hence classification by machine learning algorithms more complex. We present results from a set of machine learning (ML) algorithms that are trained on 15 acoustic features from the spectral and temporal domains to classify contextually nasalized...

Since the seminal work of Lindblom (1963) a wealth of studies have investigated undershoot and the factors governing its occurrence and variability. However, although sex-specific differences in reduction patterns have been found in adults (Byrd 1994; Whiteside 1996), as well as in children (McCormack & Knighton 1996), possible sex-specific differences in formant transitions and in particular u...

When the acoustic space that can be reached by a realistic articulatory model (Mermelstein, 1973) is explored systematically, an interesting asymmetry between front and back vowels is found (de Boer, 2009). The first formant of the highest possible back vowel [u] is lower than the first formant of the highest possible front vowel [i]. In order to test this observation in real languages, the val...

in this article, the low back vowel /a/ in word-final positions in eghlidian dialect, one of persian dialects, is studied. this vowel is represented phonetically as [a], [o] and [@] in different phonetic environments. therefore many words were collected via interviewing ten native speakers so that these different alternant forms can be accounted for appropriately. since one of the authors of th...

this paper reports the results of an experimental study on non-native production of english vowels. two groups of persian efl learners varying in language proficiency were tested on their ability to produce the nine plain vowels of american english. vowel production accuracy was assessed by means of acoustic measurements. ladefoged and maddison’s (1996) f1 f2 measurements for american english v...

Twelve Dutch vowels, each pronounced by 50 male speakers, were analyzed in 18 filter bands comparable in bandwidth with the cat's critical band. By considering the sound levels (in decibels) in these filter bands as dimensions, with a principal-component analysis the 18 dimensions per sound were reduced to four factors which together explain 75% of the total variance. The configuration of the a...

Intra-gestural and inter-gestural coordination in German word-initial consonant clusters /kl, kn, ks, pl, ps/ is investigated in four speakers by means of EMA as a function of segmental make-up and prosodic variation, i.e. prosodic boundary strength and lexical stress. Segmental make-up is shown to determine the extent of articulatory overlap of the clusters, with /kl/ exhibiting the highest de...

In Tokyo Japanese, vowel devoicing is a common process, that leads to the reduction of high, unstressed vowels ( and ) between unvoiced consonants. This article investigates to what extent native Japanese speakers (L1) learning German as foreign language (L2) show a strong tendency to produce these vowels in the foreign language as devoiced, too. Furthermore, the question is addressed whe...