## 3 Method
### Dataset Structure  
The design of the dataset structure directly influences the usability, scalability, and maintainability of the dataset. To construct an efficient dataset of Manchu music, this section provides a detailed description of the dataset's hierarchical structure, organization of data files, metadata design, and data storage and access methods. The dataset structure is shown in Table 2.  
First and foremost, the Manchu music dataset employs a hierarchical structure divided into multiple levels to ensure organized and manageable data. The top-level directory is named Mongol_Music_Dataset, encompassing all data files and related resources for Manchu music. This main directory is further categorized according to music types, instrument types, and performance forms, such as Traditional_Songs, Instrumental_Music, Ceremonial_Music, and Folk_Dances. Each category folder is further divided into subdirectories \begin{table}
\begin{tabular}{p{42.7 pt} p{113.8 pt} p{113.8 pt}} \hline
**No.** & **Hierarchy** & **Example** & **Description** \\ \hline \multirow{2}{*}{1} & \multirow{2}{*}{Top-level directory} & \multirow{2}{*}{Mongol\_Music\_Dataset} & The top-level directory of the dataset contains all Manchu music data files and related resources. \\ \cline{3-4}  & & & \\ \hline \multirow{2}{*}{2} & \multirow{2}{*}{Category directory} & Traditional\_Songs/ & Classification is based on music type, instrument type, performance form, etc. \\  & & & \\ \hline \multirow{3}{*}{3} & \multirow{2}{*}{Data file directory} & Traditional\_Songs/ & Under each classification directory, it is further divided into audio files, video files, and metadata files according to the data type. \\ \cline{3-4}  & & & \\ \cline{3-4}  & & & \\ \hline \multirow{4}{*}{4} & \multirow{4}{*}{File naming rules} & Audio: & A unified file naming rule is adopted to facilitate file management and retrieval. The T\_Video\_SingerName\_Instrument\_YYYMMDD.mp4 & naming rule includes information such as data type, performer, instrument, recording date, etc. \\ \cline{3-4}  & & & \\ \cline{3-4}  & & & \\ \hline \end{tabular}
\end{table} 
Table 2: Dataset structure storage example and description. for audio files, video files, and metadata files. For example, the Traditional_Songs directory contains subdirectories named Audio_Files, Video_Files, and Metadata. A standardized file naming convention is employed, incorporating data type, performer, instrument, and recording date, such as TS_Audio_SingerName_Instrument_YYYMMDD.wav. By combining lossless audio formats with systematic naming practices, the dataset maintains an organized and high-quality audio library. Video files are stored in high-definition formats such as MP4 and MOV to maintain video clarity, following the same naming conventions. Metadata files use structured data formats like JSON and XML for ease of parsing and processing, again conforming to similar naming conventions that include detailed information. Metadata is a crucial component of the dataset, providing detailed information about each music entry. The metadata design encompasses key fields such as basic information, performer information, music details, technical data, cultural context, and copyright information. Basic information includes a unique identifier, music title, and description. Performer information covers the performer's name, gender, age, and background. Music details encompass the type of music, instruments used, performance format, recording date, and location. Technical data involves audio and video formats, as well as duration. Cultural context describes the cultural background, historical significance, and usage scenarios of the music. Copyright information includes details about the copyright holder and usage rights. In terms of data storage and access methods, local storage is implemented on local servers or storage devices, utilizing a layered storage structure to ensure data security and availability.