In this paper we discuss the real-time simulation of a physical model of a bowed string instrument by means of alternative gestural controllers. We focus on the model's behaviour when submitted to di erent bow strokes performed on a graphical tablet using di erent types transducers. The tablet was chosen because it allows a performer to reproduce most of the basic physical gestures of bow strok...

This latest version of the vBow adds three degrees of freedom to the previous design, allowing for rotational motion across, vertical motion above, and longitudinal motion along the virtual strings, in addition to the original lateral motion of the bow stroke. Like the previous design, this version of the vBow uses servomotors with encoders and cable systems, to sense bow position and provide h...

This paper introduces and evaluates a novel methodology for the estimation of bow pressing force in violin performance, aiming at a reduced intrusiveness while maintaining high accuracy. The technique is based on using a simplified physical model of the hair ribbon deflection, and feeding this model solely with position and orientation measurements of the bow and violin spatial coordinates. The...

The performance of a plug-flow automated aerobic digester used with the compost of the Biodegradable Organic Waste (BOW) from a typical family at its generation rhythm was evaluated. During a 13 month assessment, 179.7 kg of BOW were treated and 106.7 kg of compost were obtained with a C:N ratio of 12 and an average concentration of N of about 2.72%. Additional tests enabled to assess the gener...

Recently, convergence of techniques used in image analysis and video processing has occurred. Many computation and memory intensive image analysis methods have become available for per frame processing of videos due to increased computing power of desktop computers and efficient implementations on multiple cores and graphical processing units (GPUs). As our main contribution in this work, we so...

Vector of locally aggregated descriptors (VLAD) is a promising approach for addressing the problem of image search on a very large scale. This representation is proposed to overcome the quantization error problem faced in Bag-of-Words (BoW) representation. However, text search engines have not be used yet for indexing VLAD given that it is not a sparse vector of occurrence counts. For this reas...

The violin is a bowed, or a plucked instrument. In the first case, the amplitude is continually controlled by the bow, whereas in the latter case the amplitude follows a predefined envelope. Likewise, the pitch and different timbre dimensions can be analysed as being a function of the movement of the bow, and the fingers of the left hand. The result is a list of parameters and their possible va...