Search results for "speech"

Heart rate accelerations during four active encoding tasks — pilot results

1997

Runouden kuva elintilaa etsimässä

2010

The Poetic Image in Search for Living Space In my article, I examine the concept of image, a concept which has been particularly problematic in the research of poetry. I will demonstrate that the previous definitions of the concept have been incoherent, too general and even contradictory. In contemporary literary studies, the concept of image has been used as a generali¬zation encompassing various figures of speech. At the same time, it has been understood as a “pure image”, a concrete and literal expression of sensory perception. In the first sense, the image is in the same category as, for example, the metaphor, the symbol, and the allegory, whereas in the second sense it is given a speci…

Analysis of data fusion techniques for multi-microphone audio event detection in adverse environments

2017

Acoustic event detection (AED) is currently a very active research area with multiple applications in the development of smart acoustic spaces. In this context, the advances brought by Internet of Things (IoT) platforms where multiple distributed microphones are available have also contributed to this interest. In such scenarios, the use of data fusion techniques merging information from several sensors becomes an important aspect in the design of multi-microphone AED systems. In this paper, we present a preliminary analysis of several data-fusion techniques aimed at improving the recognition accuracy of an AED system by taking advantage of the diversity provided by multiple microphones in …

Implicit Wiener Filtering for Speech Enhancement In Non-Stationary Noise

2021

Speech quality is degraded in the presence of background noise, which reduces the quality of experience (QoE) of the end-user and therefore motivates the usage of speech enhancement algorithms. A large number of approaches have been proposed in this context. However most of them have focused on the case where the noise is stationary, an assumption that seldom holds in practice. For instance, in mobile telephony, noise sources with a marked non-stationary spectral signature include vehicles, machines, and other speakers to name a few. On the other hand, the usage of frequency-domain information in existing algorithms for speech enhancement in non-stationary noise environments can be made mor…

Existence and uniqueness of nontrivial collocation solutions of implicitly linear homogeneous Volterra integral equations

2011

We analyze collocation methods for nonlinear homogeneous Volterra-Hammerstein integral equations with non-Lipschitz nonlinearity. We present different kinds of existence and uniqueness of nontrivial collocation solutions and we give conditions for such existence and uniqueness in some cases. Finally we illustrate these methods with an example of a collocation problem, and we give some examples of collocation problems that do not fit in the cases studied previously.

Concatenated trial based Hilbert-Huang transformation on event-related potentials

2010

Time-frequency analysis is critical to study event-related potentials (ERPs) now. ERPs are usually generated through averaging over a number of trials, and such averaging limits the application of a nonlinear time-frequency analysis method—Hilbert-Huang transformation (HHT). This is because HHT usually requires very long recordings to sufficiently decompose the complicated signal into oscillations and the averaged ERP trace tends to possess only hundreds of samples. Thus, this study designs the concatenated trial based HHT to release the limitation on the decomposition. Such a paradigm may reveal better temporal and spectral properties of an ERP than the conventional wavelet transformation …

Neutral baryonic systems with strangeness

2020

We review the status as regards the existence of three- and four-body bound states made of neutrons and $\Lambda$ hyperons. For interesting cases, the coupling to neutral baryonic systems made of charged particles of different strangeness has been addressed. There are strong arguments showing that the $\Lambda nn$ system has no bound states. $\Lambda\Lambda nn$ strong stable states are not favored by our current knowledge of the strangeness $-1$ and $-2$ baryon-baryon interactions. However, a possible $\Xi^- t$ quasibound state decaying to $\Lambda\Lambda nn$ might exist in nature. Similarly, there is a broad agreement about the nonexistence of $\Lambda\Lambda n$ bound states. However, the …

MUSIC-LS Modal Channel Estimation for an OFDM-OQAM System

2008

Orthogonal frequency division multiplexing based on offset quadrature amplitude modulation (OFDM-OQAM) signaling over frequency selective multipath channels shows inter-symbol interference (ISI) and Inter-Channel Interference (ICI) that degrade its performance. Channel equalization and channel estimation are needed to combat these intrinsic interferences. In this paper a novel modal channel estimator based on the MUltiple signal classification (MUSIC) and least squares (LS) algorithms for a wideband passband OFDM-OQAM signaling over static multipath channels is presented. The effects of the frequency selective channel on the received signal are described considering a wideband OFDM-OQAM sys…

Rehabilitation for Multiple Sclerosis, in Adults (II); Management and Impact on Impairment, Functioning, and Quality of Life: An Overview

2010

Multiple sclerosis (MS) often leads to different levels of severity and progression of impairment and disability and to dissimilar levels of limitation in activities and participation in different social domains, with varying impacts on quality of life (QoL) among people with MS (PwMS). Results have shown that, for PwMS, prioritizing goal setting may enhance adherence to treatment. Interdisciplinary rehabilitation may prolong the functional status level of PwMS, may result in transient improvement in the aspects of impairment features, may increase their participation in activities, and may improve their QoL, even when disease progression is not modified. Single rehabilitation packages of c…

La parola(-)odio. Sovraesposizione, criminalizzazione e interpretazione dello hate speech

2017

L'articolo parte dall'assunto che la categoria dell'"odio" (la parola "odio") sia, da qualche tempo, al centro di una sovra-esposizione mediatica, che a sua volta si traduce in una corrispondente sovra-esposizione politico-criminale, caratterizzata da una massiccia richiesta di criminalizzazione di condotte che si assumono pervase, appunto, da quel sentimento. Tra queste, innanzitutto, la "parola-odio" (l'odio manifestato a parole, lo hate speech). Partendo da questo assunto, l'articolo propone anche una interpretazione per categorie tipologiche delle norme incriminatrici dello hate speech, alla quale affianca, allo scopo di integrarne e renderne più trasparente il significato reale, anche …