G. Ananthakrishnan
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View article: Exploring the Predictability of Non-Unique Acoustic-to-Articulatory Mappings
Exploring the Predictability of Non-Unique Acoustic-to-Articulatory Mappings Open
This paper explores statistical tools that help analyze the predictability in the acoustic-to-articulatory inversion of speech, using an Electromagnetic Articulography database of simultaneously recorded acoustic and articulatory data. Sin…
View article: Using an ensemble of classifiers for mispronunciation feedback
Using an ensemble of classifiers for mispronunciation feedback Open
This paper proposes a paradigm where commonly made segmental pronunciation errors are modeled as pair-wise confusions between two or more phonemes in the language that is being learnt.The method uses an ensemble of support vector machine c…
View article: Mapping between acoustic and articulatory gestures
Mapping between acoustic and articulatory gestures Open
View article: An acoustic analysis of lion roars. I: Data collection and spectrogramand waveform analyses
An acoustic analysis of lion roars. I: Data collection and spectrogramand waveform analyses Open
This paper describes the collection of lion roar data at two different locations, anoutdoor setting at Antelope Park in Zimbabwe and an indoor setting at Parken Zooin Sweden. Preliminary analyses of spectrographic and waveform data are pro…
View article: From Acoustics to Articulation : Study of the acoustic-articulatory relationship along with methods to normalize and adapt to variations in production across different speakers
From Acoustics to Articulation : Study of the acoustic-articulatory relationship along with methods to normalize and adapt to variations in production across different speakers Open
The focus of this thesis is the relationship between the articulation ofspeech and the acoustics of produced speech. There are several problems thatare encountered in understanding this relationship, given the non-linearity,variance and no…
View article: An acoustic analysis of lion roars. II: Vocal tract characteristics
An acoustic analysis of lion roars. II: Vocal tract characteristics Open
This paper makes the first attempt to perform an acoustic-to-articulatory inversion of a lion (Panthera leo) roar. The main problems that one encounters in attempting this, is the fact that little is known about the dimensions of the vocal…
View article: Classification of affective speech using normalized time-frequency cepstra
Classification of affective speech using normalized time-frequency cepstra Open
Subtle temporal and spectral differences between categorical realizations of para-linguistic phenomena (e.g., affective vocal expressions) are hard to capture and describe.In this paper we present a signal representation based on Time Vary…
View article: Automatic prominence classification in Swedish
Automatic prominence classification in Swedish Open
This study aims at automatically classifying levels of acoustic prominence on a dataset of 200 Swedish sentences of read speech by one male native speaker.Each word in the sentences was categorized by four speech experts into one of three …
View article: Audiovisual speech inversion by switching dynamical modeling governed by a Hidden Markov process
Audiovisual speech inversion by switching dynamical modeling governed by a Hidden Markov process Open
We propose a unified framework to recover articulation from au-diovisual speech. The nonlinear audiovisual-to-articulatory map-ping is modeled by means of a switching linear dynamical system. Switching is governed by a state sequence deter…