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.

应用声学系统公司是物理建模软件乐器的市场领先者。最多的 物理模型乐器的显著优点是，它们对演奏者输入的反应既真实又真实 和音乐性--物理模型乐器的反应非常像声学乐器。一秒钟 主要好处是它们是可参数化的，这意味着用户可以更改 为了方便或音乐表现而使用的乐器。然而，对真实的声学乐器的熟悉 声学环境使得吉他的物理模型特别明显地缺乏声学空间， 弓弦、打击乐和木管。 就像应用声学制作乐器的物理模型一样，拥有 演奏、听到和录制乐器的声学环境的物理模型。这 包括对房间的效果、震源的相对位置和记录位置、震源 方向性和虚拟麦克风配置。拟议的项目将开发一种控制算法 中存在的虚拟声音环境的标准组件的参数 文学。这些标准组件包括用于直接路径的虚拟麦克风技术和 反射和反射几何体的图像源模型。人工混响将是 使用反馈延迟网络(FDN)混响器实施。在目前最先进的、低水平的 标准组件的参数向最终用户公开，这要求他们具有广泛的 声学专业知识达到良好的感知效果。所提出的控制算法的目标是 为音乐家提供不需要声学专业知识的直观界面，并翻译 此接口可提供物理上一致的参数，如定时、滤波和标准增益 组件。