An investigation of next-generation hearing index by using the ultra-accuracy spectral analysis to satisfy both of the frequency and the time resolution

利用超高精度频谱分析来研究下一代听力指数，同时满足频率和时间分辨率

• 批准号: 23650110
• 负责人: YOSHIZAWA Toshao
• 金额: $ 2.41万
• 依托单位: University of Toyama
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23650110/
• 关键词: 聴覚指標; 周波数分析; 感性計測評価; オーディオケーブル; スペクトル解析

Performance of audio equipment is often evaluated subjectively. That of audio cables is also evaluated subjectively. However, there are few studies of them because of being difficult to finding the difference of acoustical characteristics of them.In this study, we were able to visualize the very small frequency changes in the TSP audio signal passed through the audio cables by using the NHA（Non-Harmonic Analysis). From the results, we got new knowledge about the relationship between the electrical characteristic and the subjective evaluation of cables.

经常对音频设备的性能进行主观评估。还主观评估音频电缆的电缆。但是，很少有研究由于难以找到它们的声学特征的差异。在这项研究中，我们能够通过使用NHA（非谐波分析）可视化TSP音频信号中TSP音频信号的频率变化很小。从结果来看，我们获得了有关电缆的电特性和主观评估之间关系的新知识。

项目成果

Noise reduction for periodic signals using high-resolution frequency analysis

• DOI: 10.1186/1687-4722-2011-5
• 发表时间: 2011-09
• 期刊: EURASIP Journal on Audio, Speech, and Music Processing
• 作者: Toshio Yoshizawa;S. Hirobayashi;T. Misawa