Enforcement Rules of the Trademark Act Article 18

Where the application contains a statement to the effect that the trademark is a sound trademark, the reproduction of the trademark shall be a musical notation on a stave or a numerical musical score. Where the sound cannot be represented by a musical notation on a stave or a numerical musical score, the reproduction shall be the written explanation of the sound.While the reproduction is a musical notation on a stave or a numerical musical score under the preceding paragraph, the applicant shall furnish a description of the trademark.The applicant shall furnish an electronic data carrier which conforms to the format published by the Registrar Office.
中文原文 商標法施行細則第18條
申請註冊聲音商標者,商標圖樣為表現該聲音之五線譜或簡譜;無法以五線譜或簡譜表現該聲音者,商標圖樣為該聲音之文字說明。
前項商標圖樣為五線譜或簡譜者,申請人應提供商標描述。
申請註冊聲音商標應檢附符合商標專責機關公告格式之電子載體。

English translation for reference only; the Chinese text prevails. Not legal advice.