The Smart Musical Instruments (SMIs) are an emerging category of musical instruments that belongs to the wider class of Musical Things within the Internet of Musical Things paradigm. SMIs encompass sensors, actuators, embedded intelligence, and wireless connectivity to local networks and to the Internet. Interoperability represents a key issue within this domain, where heterogeneous SMIs are envisioned to exchange information between each other and a plethora of Musical Things. This paper proposes an ontology for the representation of the knowledge related to SMIs, with the aim of facilitating interoperability between SMIs as well as with other Musical Things interacting with them. There was no previous comprehensive data model for the SMIs domain, however the new ontology relates to existing ontologies, including the SOSA Ontology for the representation of sensors and actuators, the Audio Effects Ontology dealing with the description of digital audio effects, and the IoMusT Ontology for the representation Musical Things and IoMusT ecosystems. This paper documents the design of the ontology and its evaluation with respect to specific requirements gathered from an extensive literature review, which was based on scenarios involving SMIs stakeholders, such as performers and studio producers. The SMI Ontology can be accessed at: https://w3id.org/smi#.

智能乐器 (SMI) 是一种新兴的乐器类别，属于音乐事物互联网范式中更广泛的音乐事物类别。SMI 包括传感器、执行器、嵌入式智能以及与本地网络和 Internet 的无线连接。互操作性代表了该领域中的一个关键问题，其中设想异构 SMI 在彼此和大量音乐事物之间交换信息。本文提出了一种用于表示与 SMI 相关的知识的本体，旨在促进 SMI 之间以及与与其交互的其他音乐事物之间的互操作性。SMI 领域以前没有综合数据模型，但是新的本体与现有本体相关，包括用于表示传感器和执行器的 SOSA 本体、处理数字音频效果描述的音频效果本体，以及用于表示音乐事物和 IoMusT 生态系统的 IoMusT 本体。本文记录了本体的设计及其对从广泛的文献回顾中收集的特定要求的评估，该回顾基于涉及 SMI 利益相关者（例如表演者和工作室制作人）的场景。SMI 本体可以通过以下网址访问：https://w3id.org/smi#。本文记录了本体的设计及其对从广泛的文献回顾中收集的特定要求的评估，该回顾基于涉及 SMI 利益相关者（例如表演者和工作室制作人）的场景。SMI 本体可以通过以下网址访问：https://w3id.org/smi#。本文记录了本体的设计及其对从广泛的文献回顾中收集的特定要求的评估，该回顾基于涉及 SMI 利益相关者（例如表演者和工作室制作人）的场景。SMI 本体可以通过以下网址访问：https://w3id.org/smi#。