A hybrid longitudinal-torsional ultrasonic transducer is designed and fabricated in this research. The design of the transducer was performed using the FE method with ABAQUS software, with the aim of combining the longitudinal and torsional vibration modes. The transducer horn is then fabricated using a 4-axis milling machine. The PZT stacks are employed in order to excite the transducer. The t...

The purpose of the article is to study piano’s performance expression in sound representations electroacoustic opuses by Ukrainian composers. research methodology based on musicological, semiotic, cultural, and hermeneutical analysis. scientific novelty that for first time music Ukraine, importance instrumentalism, namely piano lexicon, interpretation images a person, an epoch world reproduced ...

This paper develops the notion of space-source in electroacoustic music. Space-source is one of the four spatial categories, drawn from the theoretical work of Annette Vande Gorne (the other spatial categories are spaceambiophony, space-geometry and space-illusion). It demonstrates the methods by which space-source can be integrated into the compositional process and in the projection of electr...

A micrometer-sized electroacoustic DNA-biosensor was developed. The device included a thin semi-crystalline polyethylene terephthalate (PET) dielectric layer with two Ag microband electrodes on one side and a DNA thiol-labeled monolayer adsorbed on a gold surface on the other. A resonance wave was observed at 29 MHz with a network analyzer, upon AC voltage application between the two Ag electro...

The initial stages of creative design often involve sketching. Electroacoustic composition is no exception to this. Paradoxically, the technologies that enable this form of composition provide little support for the sketching process itself. In this paper we first present evidence for the importance of paper-and-pen sketching in current practice and discuss two strategic representational functi...

conclusions our results indicate that changes in muscle thickness and echo intensity are induced by different inward pressures of the transducer during us. when using a technique that involves a handheld transducer, the examiner should attempt to maintain consistent inward pressure of the transducer during us, to quantify the minimal change of the rf mass and composition. results muscle thickne...