历史 可视化 of 数据 and 关系 between things have been used in their elucidation 可听化 is the 用 of representations of 数据 through 声波 involving a 映射 过程 into the 听觉 领域 This area of 研究 and 应用（应用程序） has witnessed considerable 扩张 and interest in recent years