发明名称 |
AUFWARTSABTASTER-, ABTASTRATEUMSETZUNGS- UND ABTASTFREQUENZERNIEDRIGUNGSSTUFEN ENTHALTENDES ZEITDISKRETES FILTER |
摘要 |
A time discrete filter comprises a sampling rate converter provided with an input and an output, and a down-sampler having a down-sampling factor nd. The time discrete filter further comprises an up-sampler having an up-sampling factor nu, whereby the up-sampler is coupled to the converter input, and the converter output is coupled to the down-sampler. It has been found that if a sampling rate conversion operation is preceded by an up-sampling operation and only after the conversion is followed by a down-sampling operation to a wanted sampling frequency, that then the complexity in terms of the ultimate number of calculations, in particular multiplications and additions, is reduced. This leads to a decrease of the number of instructions per second which is a measure for the complexity of a Digital Signal Processing (DSP) algorithm. In addition this leads to an associated decrease of power consumed by a DSP, such as applied in for example audio, video, and (tele)communication devices, as well as radio and television apparatus. |
申请公布号 |
AT357772(T) |
申请公布日期 |
2007.04.15 |
申请号 |
AT20020779800T |
申请日期 |
2002.10.24 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
VAN DEN ENDEN, ADRIANUS, W., M.;ARENDS, MARC, V. |
分类号 |
H03H17/00;H03H17/02;H03H17/04;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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