Virtual Acoustic Models for Physically-Modeled Musical Instruments

物理建模乐器的虚拟声学模型

• 批准号: 488925-2015
• 负责人: Guastavino, Catherine
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=586421
• 关键词: Virtual; Acoustic; Models; Physically; Modeled

Applied Acoustics Systems is a market leader in physically-modeled software musical instruments. The most notable benefit of physically-modeled instruments is that their response to the performer's input is both realistic and musical - the physically-modeled instruments respond very much like acoustic instruments. A second major benefit is that they are parametrizable, meaning that a user can change physical properties of the instrument for convenience or musical expression. However, familiarity with real acoustic instruments in real acoustic environments makes the lack of acoustic space particularly noticeable for physical models of guitars, bowed strings, percussion, and woodwinds. In the same way that Applied Acoustics makes physical models of instruments, it would be beneficial to have physical models of the acoustic environments in which the instruments are played, heard, and recorded. This involves modeling of the effects of the room, relative position of the source and recording locations, the source directivity, and the virtual microphone configuration. The proposed project will develop a control algorithm that produces parameters for the standard components of virtual acoustic environments existing in the literature. These standard components include a virtual microphone techniques for the direct path and reflections and the image-source model for the reflection geometry. Artificial reverberation will be implemented using a Feedback Delay Network (FDN) reverberator. In the current state-of-the-art, low-level parameters of the standard components are exposed to end users which requires them to have extensive acoustic expertise to achieve good perceptual results. The objective of the proposed control algorithm is to provide an intuitive interface to musicians that requires no acoustic expertise, and to translate the controls of this interface to physically-consistent parameters such as timing, filtering, and gain for the standard components.

Applied Acoustics Systems是物理模型软件乐器的市场领导者。最多 物理模型的乐器的显着好处是，它们对表演者的意见的反应都是现实的 和音乐 - 物理模型的乐器的反应非常类似于声学乐器。第二 主要好处是它们是可参数化的，这意味着用户可以更改 仪器以方便或音乐表达。但是，熟悉真实的真实声学乐器 声学环境使缺乏声学空间，对于吉他的物理模型特别明显， 弓弦，打击乐器和木管乐器。 就像应用声学制造物理模型的方式一样，拥有 演奏，听到和记录乐器的声学环境的物理模型。这 涉及建模房间的效果，源的相对位置和记录位置（来源） 方向性和虚拟麦克风配置。拟议的项目将开发控制算法 为在现有的虚拟声学环境的标准组件中产生参数 文学。这些标准组件包括直接路径的虚拟麦克风技术 反射几何形状的反射和图像源模型。人工混响将是 使用反馈延迟网络（FDN）混响器实施。在当前最新的低级 标准组件的参数暴露于最终用户，这要求它们具有广泛 声学专业知识以获得良好的感知结果。拟议的控制算法的目的是 向不需要声学专业知识的音乐家提供直观的界面 这个接口与物理上一致的参数，例如定时，过滤和标准的增益 成分。