发明名称 |
Audio information processing and attack detection apparatus and method |
摘要 |
An audio information processing apparatus and method include dividing an audio signal, determining a time period having a power change ratio of an audio signal larger than a first threshold value as an attack candidate, searching the time period of the attack candidate and a time period immediately before the time period of the attack candidate for an attack starting point, correcting a power of an audio signal included in the time period, and determining whether a power change ratio of the audio signal included in the time period is larger than a second threshold value for attack detection which is larger than the first threshold value. |
申请公布号 |
US8295499(B2) |
申请公布日期 |
2012.10.23 |
申请号 |
US20100823616 |
申请日期 |
2010.06.25 |
申请人 |
SHIRAKAWA MIYUKI;SUZUKI MASANAO;TSUCHINAGA YOSHITERU;FUJITSU LIMITED |
发明人 |
SHIRAKAWA MIYUKI;SUZUKI MASANAO;TSUCHINAGA YOSHITERU |
分类号 |
H04R29/00;G06F17/00;G10L19/00;H03G7/00;H04B15/00 |
主分类号 |
H04R29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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