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26
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Introduction
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Publications
Publications (26)
In this study, we propose an objective function for joint speech enhancement and amplification that can be parameterized to account for hearing loss based on the pure-tone audiogram. We employ the ConvTasNet model architecture for end-to-end speech enhancement and compare the personalized criterion to existing distance and metric-based objective fu...
Background: Auditory-inspired signal processing strategies have successfully been used for the objective assessment of speech intelligibility and quality for a wide range of signal degradations, including signals that are processed by speech enhancement systems. Recent studies show that supervising a speech enhancement system to increase objective...
Hearing impaired (ΗΙ) listeners often struggle to follow conversations when exposed in a complex acoustic environment. This is partly due to the reduced ability in recovering the target speech Temporal Envelope (ENV) cues from Temporal Fine Structure (TFS). This study investigates the enhancement of speech intelligibility in HI listeners, by proces...
Hearing impaired (ΗΙ) listeners often struggle to follow conversations when exposed in a complex acoustic environment. This is partly due to the reduced ability in recovering the target speech Temporal Envelope (ENV) cues from Temporal Fine Structure (TFS). This study investigates the enhancement of speech intelligibility in HI listeners, by proces...
This piece of research aimed to further investigate the relationships between tone inharmonicity, timbral semantics and perceived musical tension. Thus, a connection between the luminance-texture-mass (LTM) model of timbral semantics (Zacharakis et al., 2014; Zacharakis & Pastiadis, 2016) and the concept of musical tension -which is not often studi...
This paper presents an empirical experiment aiming to investigate the potential influence of timbral semantics on tension induction in Greek traditional folk music. To this end, a group of seventeen listeners rated the evolution of auditory luminance, texture and mass together with the felt tension over sixteen musical excerpts in real-time. Correl...
This study presents a listening experiment designed to further examine the previously proposed luminance-texture-mass (LTM) model for timbral semantics. Thirty-two musically trained listeners rated twenty-four instrument tones on six predefined semantic scales, namely, brilliance, depth, roundness, warmth, fullness, and richness. The selection of t...
Background
It is well known that suicidal rates vary considerably among European countries and the reasons for this are unknown, although several theories have been proposed. The effect of economic variables has been extensively studied but not that of climate. Methods
Data from 29 European countries covering the years 2000–2012 and concerning male...
This study presents a listening experiment designed to further examine the previously proposed luminance-texture-mass (LTM) model for timbral semantics. Thirty two musically trained listeners rated twenty four instrument tones on six predefined semantic scales, namely, brilliance, depth, roundness, warmth, fullness and richness. The selection of th...
The current study expands our previous work on interlanguage musical timbre semantics by examining the relationship between semantics and perception of timbre. Following Zacharakis, Pastiadis, and Reiss (2014), a pairwise dissimilarity listening test involving participants from two separate linguistic groups (Greek and English) was conducted. Subse...
A study of musical timbre semantics was
conducted with listeners from two different linguistic
groups. In two separate experiments, native Greek and
English speaking participants were asked to describe
23 musical instrument tones of variable pitch using
a predefined vocabulary of 30 adjectives. The common
experimental protocol facilitated the inves...
Background
The perception of identity of solo playing musical instruments has been extensively examined. However, very few works are reported which systematically deal with aspects of timbre identification in concurrently sounding instruments. Consequently, the relationships between perceptual aspects of timbre and related elements of musical pract...
Previous works on computational approaches for the description of
pitch phenomena have employed various methodologies,
deterministic and probabilistic, which are based on
psychophysiological auditory stimuli modeling, representations and
transformations (e.g. spatial, temporal, spatiotemporal), both at
peripheral and more central stages of the audi...
Spectrotemporal information of the stimulus delivered to the
auditory nerve by current Cochlear Implant (CI) technology is
still insufficient in providing an accurate representation of the
timbre of musical instruments at a perceptual level. This fact associates
with poor performance in instrument identification by
CI users, especially in cases whe...
Aim: Introduction of a novel framework in testing children’s speech intelligibility in Greek language.
Material and methods: The proposal combines an advantageous adaptive psychophysical testing procedure (MUEST) and tasks suitable for use with children.
Results: Preliminary application of the considered psychophysical testing procedure shows promi...
The present study was carried out to determine whether recorded musical tones played at various pitches on a clarinet, a flute, an oboe, and a trumpet are perceived as being equal in loudness when presented to listeners at the same A-weighted level. This psychophysical investigation showed systematic effects of both instrument type and pitch that c...
A study on the verbal attributes of musical timbre was conducted in an effort to identify the most significant semantic descriptors and to quantify the association between prominent timbral aspects and several categorical properties of environmental entities. A verbal attribute magnitude estimation (VAME) type of listening test in which participant...
The estimation of the vocal tract resonance frequencies from acoustic voice signals has been widely employed and various methods have been proposed. Among them, a number of cepstrum based techniques have been implemented to disentangle the voice's spectral envelope from the harmonic components. Noticebly less research has been conducted for voices...
In this work we present the architecture of a system containing two artificial neural networks in cascade-a self-organizing neural network (called SARDNET) and a Multi-Layer Perceptron-that receives a sequence of temporal intervals (performed rhythm pattern) as input and maps it into a given set of prototypical rhythm patterns. Results provide stro...
Background in clinical neurology/ neuropsychology. In the past few years, increasing interest has been ex pressed in the aetiology and neurobiological factors of language and literacy difficulties experienced by children and a great research effort has been devoted to establish explicit classification criteria and effective identification procedur...
This paper focuses on the problem of estimation of equivalent loudness of wind musical instrument sounds (flute, oboe, Bb clarinet, Bb trumpet) in four different pitches (Α4, C#5, A5, C#6). Specifically, two different methods of loudness equalization are investigated and compared. Firstly, all the recorded sound samples were processed so as to matc...
