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Papers by Jonathan Howell

Research paper thumbnail of Revisiting English word stress and rhythm in the post-nuclear domain

The Journal of the Acoustical Society of America, 2016

Research paper thumbnail of Evaluation of web speech and lab speech for automatic classification of prosody

The Journal of the Acoustical Society of America, 2014

Research paper thumbnail of A Corpus Search Methodology for Focus Realization

Research paper thumbnail of Meaning And Prosody: On The Web, In The Lab And From The Theorist'S Armchair

Research paper thumbnail of Acoustic Classification of Focus in a Web Corpus of Comparatives

Research paper thumbnail of Focus Placement On Adjacent Words in Yes/No Questions

Research paper thumbnail of Web Harvest of Minimal Intonational Pairs

Research paper thumbnail of Effect of “only” on prosodic focus marking

Journal of the Acoustical Society of America, 2015

Research paper thumbnail of Harvesting speech datasets for linguistic research on the web

Research paper thumbnail of A corpus search methodology for focus realization

The Journal of the Acoustical Society of America, 2009

Research paper thumbnail of Second occurrence focus and the acoustics of prominence

The Journal of the Acoustical Society of America, 2006

Research paper thumbnail of Tongue dorsum location and tongue root retraction in alveolar and palatal clicks in the endangered language N/uu

The Journal of the Acoustical Society of America, 2006

Tongue dorsum location and tongue root retraction in alveolar and palatal clicks in the endangere... more Tongue dorsum location and tongue root retraction in alveolar and palatal clicks in the endangered language N/uu. [The Journal of the Acoustical Society of America 120, 3377 (2006)]. Amanda L. Miller, Johanna Brugman, Jonathan Howell, Bonny Sands. Abstract. ...

Research paper thumbnail of The Semantics and Prosody of Post-Nominal Focus Particles

Research paper thumbnail of Prosodylab-aligner: A tool for forced alignment of laboratory speech

Proceedings of Acoustics Week in Canada. Canadian Acoustics, 2011

The Penn Forced Aligner automates the alignment process using the Hidden Markov Model Toolkit (HT... more The Penn Forced Aligner automates the alignment process using the Hidden Markov Model Toolkit (HTK). The core of Prosodylab-Aligner is align. py, a script which performs acoustic model training and alignment. This script automates calls to HTK and SoX, an open-source command-line tool which is capable of resampling audio. The included README file provides instructions for installing HTK and SoX on Linux and Mac OS X, and can also be run on Windows. During training, the model is initialized with flat-start ...

Recent by Jonathan Howell

Research paper thumbnail of Acoustic classification of focus: On the web and in the lab

We present a new methodological approach which combines both naturally-occurring speech harvested... more We present a new methodological approach which combines both naturally-occurring speech harvested on the web and speech data elicited in the laboratory. This proof-of-concept study examines the phenomenon of focus sensitivity in English, in which the interpretation of particular grammatical constructions (e.g., the comparative) is sensitive to the location of prosodic prominence. Machine learning algorithms (support vector machines and linear discriminant analysis) and human perception experiments are used to cross-validate the web-harvested and lab-elicited speech. Results con rm the theoretical predictions for location of prominence in comparative clauses and the advantages using both web-harvested and lab-elicited speech. The most robust acoustic classifiers include paradigmatic (i.e., un-normalized), non-intonational acoustic measures (duration and relative formant frequencies from single segments). These acoustic cues are also significant predictors of human listeners’ classification, offering new evidence in the debate whether prominence is mainly encoded by pitch or by other cues, and the role that utterance-normalization plays when looking at non-pitch cues such as duration.

Research paper thumbnail of Revisiting English word stress and rhythm in the post-nuclear domain

The Journal of the Acoustical Society of America, 2016

Research paper thumbnail of Evaluation of web speech and lab speech for automatic classification of prosody

The Journal of the Acoustical Society of America, 2014

Research paper thumbnail of A Corpus Search Methodology for Focus Realization

Research paper thumbnail of Meaning And Prosody: On The Web, In The Lab And From The Theorist'S Armchair

Research paper thumbnail of Acoustic Classification of Focus in a Web Corpus of Comparatives

Research paper thumbnail of Focus Placement On Adjacent Words in Yes/No Questions

Research paper thumbnail of Web Harvest of Minimal Intonational Pairs

Research paper thumbnail of Effect of “only” on prosodic focus marking

Journal of the Acoustical Society of America, 2015

Research paper thumbnail of Harvesting speech datasets for linguistic research on the web

Research paper thumbnail of A corpus search methodology for focus realization

The Journal of the Acoustical Society of America, 2009

Research paper thumbnail of Second occurrence focus and the acoustics of prominence

The Journal of the Acoustical Society of America, 2006

Research paper thumbnail of Tongue dorsum location and tongue root retraction in alveolar and palatal clicks in the endangered language N/uu

The Journal of the Acoustical Society of America, 2006

Tongue dorsum location and tongue root retraction in alveolar and palatal clicks in the endangere... more Tongue dorsum location and tongue root retraction in alveolar and palatal clicks in the endangered language N/uu. [The Journal of the Acoustical Society of America 120, 3377 (2006)]. Amanda L. Miller, Johanna Brugman, Jonathan Howell, Bonny Sands. Abstract. ...

Research paper thumbnail of The Semantics and Prosody of Post-Nominal Focus Particles

Research paper thumbnail of Prosodylab-aligner: A tool for forced alignment of laboratory speech

Proceedings of Acoustics Week in Canada. Canadian Acoustics, 2011

The Penn Forced Aligner automates the alignment process using the Hidden Markov Model Toolkit (HT... more The Penn Forced Aligner automates the alignment process using the Hidden Markov Model Toolkit (HTK). The core of Prosodylab-Aligner is align. py, a script which performs acoustic model training and alignment. This script automates calls to HTK and SoX, an open-source command-line tool which is capable of resampling audio. The included README file provides instructions for installing HTK and SoX on Linux and Mac OS X, and can also be run on Windows. During training, the model is initialized with flat-start ...

Research paper thumbnail of Acoustic classification of focus: On the web and in the lab

We present a new methodological approach which combines both naturally-occurring speech harvested... more We present a new methodological approach which combines both naturally-occurring speech harvested on the web and speech data elicited in the laboratory. This proof-of-concept study examines the phenomenon of focus sensitivity in English, in which the interpretation of particular grammatical constructions (e.g., the comparative) is sensitive to the location of prosodic prominence. Machine learning algorithms (support vector machines and linear discriminant analysis) and human perception experiments are used to cross-validate the web-harvested and lab-elicited speech. Results con rm the theoretical predictions for location of prominence in comparative clauses and the advantages using both web-harvested and lab-elicited speech. The most robust acoustic classifiers include paradigmatic (i.e., un-normalized), non-intonational acoustic measures (duration and relative formant frequencies from single segments). These acoustic cues are also significant predictors of human listeners’ classification, offering new evidence in the debate whether prominence is mainly encoded by pitch or by other cues, and the role that utterance-normalization plays when looking at non-pitch cues such as duration.

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