Olivier Perrotin

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Cantor Digitalis is a performative singing synthesizer that is composed of two main parts: a chironomic control interface and a parametric voice synthesizer. The control interface is based on a pen/touch graphic tablet equipped with a template representing vocalic and melodic spaces. Hand and pen positions, pen pressure, and a graphical user interface are(More)
Cantor Digitalis, a real-time formant synthesizer controlled by a graphic tablet and a stylus, is used for assessment of melodic precision and accuracy in singing synthesis. Melodic accuracy and precision are measured in three experiments for groups of 20 and 28 subjects. The task of the subjects is to sing musical intervals and short melodies, at various(More)
Conceiving digital musical instruments might be challenging in terms of spectator accessibility. Depending on the interface and the complexity of the software used as a transition between the controller and sound, a musician performance can be totally opaque for the audience and lose part of its interest. This paper examines the possibility of adding a(More)
Touch user interfaces such as touchpad or pen tablet are often used for continuous pitch control in synthesis devices. Usually, pitch is set at the contact point on the interface, thus introducing possible pitch inaccuracies at the note onset. This paper proposes a new algorithm, based on an adaptive attraction mapping, for improving initial pitch accuracy(More)
The purpose of pitch correction is to assist a musician in playing notes with accuracy and precision, without preventing expressive pitch variations. This study presents and examines a new method for automatic pitch correction: Dynamic Pitch Warping (DPW). The analytic formulation of the warping function is derived. In the context of live playing of(More)
Audio, visual, and proprioceptive actions are involved when manipulating a graphic tablet musical interface. Previous works suggested a possible dominance of the visual over the auditory modality in this situation. The main goal of the present study is to examine the interferences between these modalities in visual, audio, and audio-visual target(More)
The estimation of glottal flow from a speech waveform is a key method for speech analysis and parameterization. Significant research effort has been made to dissociate the first vocal tract resonance from the glottal formant (the low-frequency resonance describing the open-phase of the vocal fold vibration). However few methods cope with estimation of(More)
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