diff --git a/packages/frontend/src/scripts/sound.ts b/packages/frontend/src/scripts/sound.ts
index ac1124a8e5..2b7b95f514 100644
--- a/packages/frontend/src/scripts/sound.ts
+++ b/packages/frontend/src/scripts/sound.ts
@@ -12,8 +12,13 @@ const cache = new Map<string, AudioBuffer>();
 let canPlay = true;
 
 export const soundsTypes = [
+	// 音声なし
 	null,
+
+	// ドライブの音声
 	'driveFile',
+
+	// プリインストール
 	'syuilo/n-aec',
 	'syuilo/n-aec-4va',
 	'syuilo/n-aec-4vb',
diff --git a/packages/frontend/src/store.ts b/packages/frontend/src/store.ts
index 9808623a84..b96d4ae4fa 100644
--- a/packages/frontend/src/store.ts
+++ b/packages/frontend/src/store.ts
@@ -36,13 +36,19 @@ interface PageViewInterruptor {
 	handler: (page: Misskey.entities.Page) => unknown;
 }
 
+/** サウンド設定 */
 export type SoundStore = {
 	type: Exclude<SoundType, 'driveFile'>;
 	volume: number;
 } | {
 	type: 'driveFile';
+
+	/** ドライブのファイルID */
 	fileId: string;
+
+	/** ファイルURL（こちらが優先される） */
 	fileUrl: string;
+	
 	volume: number;
 }