发明名称 |
NOISE CANCELING DEVICE, WEIGHING DEVICE, METHOD OF CANCELING A NOISE, AND METHOD OF DESIGNING A DIGITAL FILTER |
摘要 |
It is an object of the present invention to provide techniques which allow for easier change in filter characteristics of a digital filter. Then, in order to attain this object, in a weighing device according to the present invention, a filter coefficient calculator (6) calculates a filter coefficient using a predetermined mathematical expression and outputs the result to a signal processor (5). The signal processor (5) carries out a filtering process on a weight signal (DS) of a digital signal using the filter coefficient. The mathematical expression includes a first parameter which specifies an amount of attenuation in at least one attenuation band where attenuation should be locally intensified in a stopband of amplitude characteristics of the filtering process, a second parameter which specifies the band position of the at least one attenuation band, and a third parameter which specifies a starting frequency of the stopband.
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申请公布号 |
US2009125575(A1) |
申请公布日期 |
2009.05.14 |
申请号 |
US20080301380 |
申请日期 |
2008.01.18 |
申请人 |
AIKAWA NAOYUKI;MORISHITA YUKIO |
发明人 |
AIKAWA NAOYUKI;MORISHITA YUKIO |
分类号 |
G06F17/10 |
主分类号 |
G06F17/10 |
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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