发明名称 |
Improvement to digital filter sampling rate conversion method and device. |
摘要 |
<p>A digital filter providing output samples at a rate B while input samples are being provided at a rate A. The filter impulse response h(t) is sampled at a rate P = a.A = b.B, with P being the lowest common multiple to A and B, to derive Np filter coefficients (Ci) therefrom. Said coefficients are arranged into "a" sets of Np/a coefficients and stored. Output samples are then computed by feeding input samples Sn at incoming rate while permutating the sets of coefficients and generating output samples at said output rate.</p> |
申请公布号 |
EP0356597(A1) |
申请公布日期 |
1990.03.07 |
申请号 |
EP19880480021 |
申请日期 |
1988.08.30 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BELLOC, JACQUES;GALAND, CLAUDE;LANCON, EMMANUEL;MILEWSKI, ANDRE;QUINTIN, MICHEL |
分类号 |
H03H17/00;H03H17/02;H03H17/06 |
主分类号 |
H03H17/00 |
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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