S. Ystad

... Aramaki Federico Avanzini Rolf Bader Isabel Barbancho Ana M. Barbancho Mathieu Barthet Antonio Camurri Laurent Daudet Olivier ... Haus Kristoffer Jensen Anssi Klapuri Richard Kronland-Martinet Marc Leman Sylvain Marchand Grégory Pallone Andreas Rauber David Sharp ...

ABSTRACT In this paper, the results of psychoacoustical experiments on auditory time-frequency (TF) masking using stimuli (masker and target) with maximal concentration in the TF plane are presented. The target was shifted either along the time axis, the frequency axis, or both relative to the masker. The results show that a simple superposition of spectral and temporal masking functions does not provide an accurate representation of the measured TF masking function. This confirms the inaccuracy of simple models of TF masking currently implemented in some perceptual audio codecs. In the context of audio signal processing, the present results constitute a crucial basis for the prediction of auditory masking in the TF representations of sounds. An algorithm that removes the inaudible components in the wavelet transform of a sound while causing no audible difference to the original sound after re-synthesis is proposed. Preliminary results are promising, although further development is required.

... The piloting of both the additive synthesis model and the physical model showed that the RadioBaton was an interesting tool for pedagogic purposes, but that it was difficult to seriously play with it because of the lack of absolute reference in the 3D space. ...

In this paper we analyze clarinet sounds produced by a synthesis model that simulates the physical behavior of a real clarinet, in order to find a relationship between the clarinet timbre and the interpretation. Sounds have been obtained by varying two important control parameters of the synthesis model, namely the blowing pressure and the aperture of the reed channel. These

In this paper, timbre perception of sounds from 3 different impacted materials (Wood, Metal and Glass) was examined using a categorization task. Natural sounds were recorded, analyzed and resynthesized and a sound morphing process was applied to construct sound continua between different materials. Participants were asked to categorize the sounds as Wood, Metal or Glass. Typical sounds for each category

The current study is part of a larger project aiming at offering intuitive mappings of control parameters piloting synthesis models by semantic descriptions of sounds, i.e. simple verbal labels related to various feelings, emotions, gestures or motions. Hence, this work is directly related to the general problem of semiotics of sounds. We here put a special interest in sounds evoking

In this study, we aimed at determining statistical models that allowed for the classification of impact sounds according to the perceived material (Wood, Metal and Glass). For that purpose, everyday life sounds were recorded, analyzed and resynthesized to insure the generation of realistic sounds. Listening tests were conducted to define sets of typical sounds of each material category by using

In schizophrenia, perceptual inundation related to sensory gating deficit can be evaluated "off-line" with the sensory gating inventory (SGI) and "on-line" during listening tests. However, no study investigated the relation between "off-line evaluation" and "on-line evaluation". The present study investigates this relationship. A sound corpus of 36 realistic environmental auditory scenes was obtained from a 3D immersive synthesizer. Twenty schizophrenic patients and twenty healthy subjects completed the SGI and evaluated the feeling of "inundation" from 1 ("null") to 5 ("maximum") for each auditory scene. Sensory gating deficit was evaluated in half of each population group with P50 suppression electrophysiological measure. Evaluation of inundation during sound listening was significantly higher in schizophrenia (3.25) compared to the control group (2.40, P<.001). The evaluation of inundation during the listening test correlated significantly with the perceptual modulation (n=20, rho=.52, P=.029) and the over-inclusion dimensions (n=20, rho=.59, P=.01) of the SGI in schizophrenic patients and with the P50 suppression for the entire group of controls and patients who performed ERP recordings (n=20, rho=-.49, P=.027). An evaluation of the external validity of the SGI was obtained through listening tests. The ability to control acoustic parameters of each of the realistic immersive environmental auditory scenes might in future research make it possible to identify acoustic triggers related to perceptual inundation in schizophrenia.

... and Cognitive Evaluation of a Piano Synthesis Model Julien Bensa1, Dani`ele Dubois1, Richard Kronland-Martinet2, and Sølvi Ystad2 1 Laboratoire d'Acoustique Musicale, Université Pierre et Marie Curie, 11 rue de Lourmel, Paris, France {bensa, dubois}@lam.jussieu.fr 2 ...

This book constitutes the thoroughly refereed post-conference proceedings of the 5th International Symposium on Computer Music Modeling and Retrieval, CMMR 2008-Genesis of Meaning in Sound and Music, held in Copenhagen, Denmark, in May 2008. The 21 ...

Laback et al. [(2011). J. Acoust. Soc. Am. 129, 888-897] investigated the additivity of nonsimultaneous masking using short Gaussian-shaped tones as maskers and target. The present study involved Gaussian stimuli to measure the additivity of simultaneous masking for combinations of up to four spectrally separated maskers. According to most basilar membrane measurements, the maskers should be processed linearly at the characteristic frequency (CF) of the target. Assuming also compression of the target, all masker combinations should produce excess masking (exceeding linear additivity). The results for a pair of maskers flanking the target indeed showed excess masking. The amount of excess masking could be predicted by a model assuming summation of masker-evoked excitations in intensity units at the target CF and compression of the target, using compressive input/output functions derived from the nonsimultaneous masking study. However, the combinations of lower-frequency maskers showed much less excess masking than predicted by the model. This cannot easily be attributed to factors like off-frequency listening, combination tone perception, or between-masker suppression. It was better predicted, however, by assuming weighted intensity summation of masker excitations. The optimum weights for the lower-frequency maskers were smaller than one, consistent with partial masker compression as indicated by recent psychoacoustic data.

Описание: The field of computer music is interdisciplinary by nature and closely related to a number of computer science and engineering areas such as information retrieval, programming, human-computer interaction, digital libraries, hypermedia, artificial ...

... Thibaud Necciari, Sophie Savel, Sabine Meunier, Richard Kronland-Martinet, Sølvi Ystad Laboratoire de Mécanique et d'Acoustique (CNRS–UPR 7051 ... Ces études emploient généralement des stimuli de longue durée (≥ 300 ms) afin de conserver une bande passante étroite. ...