| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2013: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Outline of Final Research Achievements |
There are several situations that the conversation sound which contains personal information or a confidential information can be heard unintentionally by a third-party . In this research, novel approaches about masking using active noise control technique are proposed. These approaches make one's recognition difficult with changing the frequency characteristics of the target sound adaptively and/or selectively. It was confirmed that Japanese vowels can be masked effectively with the proposed band-noise. In addition, the effectiveness of the proposed method using active noise control was also confirmed. We compared the conventional masking sound performance and made the condition of an ideal masking sound clear.
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