Search results for "Features"

In search of perceptual and acoustical correlates of polyphonic timbre

2009

Polyphonic timbre refers to the overall timbre mixture of a music signal, or in simple words, the 'global sound' of any piece of music. It has been proven to be an important element for computational categorization according to genre, style, mood, and emotions, but its perceptual constituents have been less investigated. The aim of the study is to determine the most salient features of polyphonic timbre perception by investigating the descriptive auditory qualities of music and mapping acoustic features to these descriptors. Descriptors of monophonic timbre taken from previous literature were used as a starting point. Based on three pilot studies, eight scales were chosen for the actual exp…

On application of kernel PCA for generating stimulus features for fMRI during continuous music listening

2018

Background There has been growing interest towards naturalistic neuroimaging experiments, which deepen our understanding of how human brain processes and integrates incoming streams of multifaceted sensory information, as commonly occurs in real world. Music is a good example of such complex continuous phenomenon. In a few recent fMRI studies examining neural correlates of music in continuous listening settings, multiple perceptual attributes of music stimulus were represented by a set of high-level features, produced as the linear combination of the acoustic descriptors computationally extracted from the stimulus audio. New method fMRI data from naturalistic music listening experiment were…

Musical Feature and Novelty Curve Characterizations as Predictors of Segmentation Accuracy

2017

Novelty detection is a well-established method for analyzing the structure of music based on acoustic descriptors. Work on novelty-based segmentation prediction has mainly concentrated on enhancement of features and similarity matrices, novelty kernel computation and peak detection. Less attention, however, has been paid to characteristics of musical features and novelty curves, and their contribution to segmentation accuracy. This is particularly important as it can help unearth acoustic cues prompting perceptual segmentation and find new determinants of segmentation model performance. This study focused on spectral, rhythmic and harmonic prediction of perceptual segmentation density, whic…

Performers' emotions in expressive performance : sound, movement, and perception

2014

A Single-Center (Sibiu, Romania), Retrospective Study (March–November 2020) of COVID-19 Clinical and Epidemiological Features in Children

2021

The aim of this study was to describe and analyze epidemiological and clinical features of children screened for COVID-19 at Sibiu Pediatric Clinical Hospital during the first 9 months (March–November) of coronavirus disease pandemic in Romania. A total of 203 pediatric patients with a confirmed diagnosis of COVID-19 were included in the study. The median age of the patients was 121 (IQR 18–181) months and 52.22% had mild clinical type with pneumonia, 35.47% were moderate cases, 3.94% severe cases, 0.99% critically ill cases and 7.39% were asymptomatic. The most common symptoms were fever (n = 130, 64.03%), nasal congestion (n = 138, 67.98%), cough (n = 128, 63.05%) followed by sore throat …

Extracting multi-mode ERP features using fifth-order nonnegative tensor decomposition

2018

Background Preprocessed Event-related potential (ERP) data are usually organized in multi-way tensor, in which tensor decomposition serves as a powerful tool for data processing. Due to the limitation of computation burden for multi-way data and the low algorithm performance of stability and efficiency, multi-way ERP data are conventionally reorganized into low-order tensor or matrix before further analysis. However, the reorganization may hamper mode specification and spoil the interaction information among different modes. New method In this study, we applied a fifth-order tensor decomposition to a set of fifth-order ERP data collected by exerting proprioceptive stimulus on left and right…

Feature selection for classification of music according to expressed emotion

2009

Retoriskie teksta posmi interneta ziņu rakstos

2016

Ziņas ir viena no svarīgākajām vajadzībām ikdienas dzīvē, lai sekotu līdzi pasaules notikumu attīstībai. Ir veikti vairāki avīžu rakstu pētījumi no dažādiem aspektiem, taču maz uzmanības tiek pievērsts retoriskajiem teksta posmiem avīžu rakstos, kas pieejami internetā, tādēļ šī darba mērķis ir izpētīt retoriskos teksta posmus un to attiecīgo soļus struktūru interneta ziņu rakstos un noteikt to lingvistiskās iezīmes. Darba analīzei, galvenokārt tika izmantotas tādu autoru kā Swales (1990)un Bhatia (1993) teorijas. Iegūtie dati tika analizēti, izmantojot kvalitatīvā pētījuma metodi ar kvantitatīviem elementiem. Analīzei tika izvēlēti divdesmit BBC biznesa interneta ziņu raksti. Pētījuma rezul…

Physiological Measures Regress onto Acoustic and Perceptual Features of Soundscapes

2013

There is no exact model for the relationship between the autonomic nervous system (ANS) and evoked or perceived emotion. Music has long been a privileged field for exploration, while the contribution of soundscape research is more recent. It is known that health is influenced by the sonic environment, and the study here presented aimed to investigate the nature and strength of relationships between soundscape features and physiological responses linked to relaxation or stress. In a controlled experiment, seventeen healthy volun-teers moved freely inside a physical installation listening to soundscape recordings of nature, urban parks, eateries, and shops, reproduced using 3D ambisonic techn…

Deeds not words’: Emmeline Pankhurst and the vote for women

2013

Women born in the nineteenth century had little chance of escaping the role that was considered their destiny - to marry young, stay home and raise a family. Campaigners like Millicent Fawcett and Elizabeth Garret Anderson carried out a personal and largely peaceful struggle to improve chances of an education and open professions like medicine to women. In the early part of the century ‘the suffragists’ were unsuccessful in their immediate objective, although they still exist in the form of one of the British main research and lobbying groups working on behalf of women, the Fawcett Society. In 1889, an English woman Emmeline Pankhurst founded the Women's Franchise League, which fought to al…