发明授权
US07873426B2 Digital recording device, digital recording method, program, and storage medium
失效
数字记录装置，数字记录方法，程序和存储介质
- 专利标题： Digital recording device, digital recording method, program, and storage medium
- 专利标题（中）： 数字记录装置，数字记录方法，程序和存储介质
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申请号： US11553732申请日： 2006-10-27
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公开(公告)号： US07873426B2公开(公告)日： 2011-01-18
- 发明人: Eiichi Yamada
- 申请人： Eiichi Yamada
- 申请人地址： JP Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2005-324019 20051108
- 主分类号： G06F17/00
- IPC分类号： G06F17/00
摘要：
A digital recording device includes a microphone configured to convert collected sound into an analog audio signal; a first analog to digital converter configured to convert the signal converted by the microphone into a digital audio signal; a first memory configured to store the digital audio signal of the first analog to digital converter; an attenuator configured to attenuate the analog audio signal with a predetermined attenuation factor; a second analog to digital converter configured to convert the attenuated signal into a digital audio signal; a second memory configured to store the digital audio signal of the second analog to digital converter; an audio signal generating unit configured to extract the digital audio signal in one of the first memory and the second memory for a required time range according to an amplitude maximum value of the signal, and generate a new digital audio signal; and an audio signal memory for storing the generated digital audio signal.