Development of a „virtual prototype“ of a violin and its application in investigations on the audio-tactile human-instrument-interface with respect to the influence of different vibration characteristics on perception

关于小提琴演奏时不同知觉属性的评估，已经提出了许多研究，强调了总体多模式事件的触觉成分对乐器评级的巨大影响。然而，到目前为止，人们对感知振动信号的不同属性如何影响不同感知属性的评估知之甚少。这一关系将在本研究项目中进行系统的研究。为此，将首先开发一种新的方法，使其能够独立和任意地修改小提琴的触觉和听觉反馈。因此，可以在保持其他属性不变的同时修改多模式事件的特定属性。当直接比较小提琴时，这是不可能的，因为文献中经常描述这种情况。为此，“虚拟样机”(V.P.)将开发和实施一种小提琴。这种乐器是以电动小提琴为基础的，它具有传统的声学小提琴的人体工程学。它将配备一个拾音系统、一个信号处理单元、耳机和振动器。这使得能够逼真地再现乐器接触点的声音和振动。因此，可以模拟实际的声学小提琴，或者可以创建合成小提琴。这款乐器除了可以演奏外，还可以作为音频触觉回放设备。此外，还将开发一种测量系统，使其能够测量声学小提琴的传递函数，这是在V.P.上进行仿真所需的。此外，该系统还可以用于用小提琴进行音频触觉录音，以便通过VP进行回放。将与VP进行交互和非交互的感知实验。首先，在非交互模式下，将研究振动信号的不同属性如何影响知觉属性的评估。为此，首先研究了不同频率、不同幅值的原始振动信号对结构振动的影响。然后，将使用基于声学小提琴振动记录的更复杂的信号。在这些实验结果的基础上，将建立小提琴振动特性与评价之间的关系模型。最后，将非交互实验与交互实验进行比较。为此，受试者将扮演副总统。并评估与以前相同的振动特性。因此，一方面可以突出主动相互作用的影响，另一方面可以评估通过小提琴弓产生的额外触觉刺激。

Many studies have been presented regarding the assessment of different perceptual attributes when playing violins, highlighting the large influence of the tactile component of the overall multi-modal event on instrument ratings. To date, however, little is known about how different properties of the perceived vibration signal affect the assessment of different perceptual attributes. This relationship will be systematically investigated in this research project. To this end, a new method will be developed first which makes it possible to modify tactile and auditory feedback of a violin independently and arbitrarily. Thus, specific properties of the multi-modal event can be modified while others are kept constant. This is not possible when directly comparing violins as it has often been described in the literature. For this purpose, a "virtual prototype" (v.p.) of a violin will be developed and implemented. This instrument is based on an electric violin, which has the conventional ergonomics of an acoustic violin. It will be equipped with a sound pickup system, a signal processing unit, headphones and vibrators. This allows to realistically reproduce both the sound and the vibrations at the contact points to the instrument. Thus, actual acoustic violins can be emulated or synthetic violins can be created. In addition to being played, this instrument can also be used as an audio-tactile playback device. Furthermore, a measurement system is to be developed which makes it possible to measure transfer functions on acoustic violins that are required for emulation on the v.p.. In addition, this system can be used to make audio-tactile recordings with violins in order to play them back via the v.p..Interactive and non-interactive perceptual experiments will be conducted with the v.p.. First, in the non-interactive mode, it will be investigated how different properties of the vibration signal affect the assessment of perceptual attributes. Therefore, the influence of primitive vibration signals of different frequencies and amplitudes is investigated at the beginning. Then, more complex signals based on vibration recordings of acoustic violins will be used. Based on the results of these experiments, a model for the relationship between vibration characteristics and the evaluation of violins will be developed. Finally, the non-interactive experiments will be compared to interactive experiments. For this purpose, test subjects are to play the v.p. themselves and evaluate the same vibration characteristics as before. Thus, on the one hand the influence of the active interaction can be highlighted and on the other hand the additional tactile stimulus via the violin bow can be evaluated.