发明授权
- 专利标题: Sampling rate converting apparatus
- 专利标题(中): 采样速率转换装置
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申请号: US768243申请日: 1991-10-15
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公开(公告)号: US5204827A公开(公告)日: 1993-04-20
- 发明人: Tadao Fujita , Jun Takayama , Takeshi Ninomiya
- 申请人: Tadao Fujita , Jun Takayama , Takeshi Ninomiya
- 申请人地址: JPX Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX2-35614 19900216
- 主分类号: H03H17/02
- IPC分类号: H03H17/02 ; H03H17/06 ; H04N7/01
摘要:
A sampling rate converting apparatus is arranged in such a manner that, in a case where the frequency ratio of a first or a second sampling frequency holds a simple integral relationship, its oversampling filters are composed of FIR type digital filters the length of each of which corresponds to the least common multiple of the frequency ratio so that the first or the second sampling frequency of the digital signal is converted into the second or the first sampling frequency.A sampling rate converting apparatus is arranged in such a manner that coefficients to be given to weighting means of oversampling filters are changed by selecting coefficient data of coefficient generating means including a plurality of selectable coefficient data so that, in a case where the frequency ratio of the first or the second sampling frequency does not hold a simple integral relationship, the first or the second sampling frequency of the digital signal can be converted into the second or the first sampling frequency.
公开/授权文献
- US5771546A Pull tab for slide fastener slider 公开/授权日:1998-06-30