公开(公告)号：US20160357705A1

公开(公告)日：2016-12-08

申请号：US15103112

申请日：2014-11-19

Applicant: NEC Corporation

Inventor： Atsufumi SHIBAYAMA

IPC: G06F17/14 ,  G06F11/07

CPC classification number: G06F17/142 ,  G06F11/0721 ,  G06F11/0751 ,  H03H17/0213

Abstract: Provided is a digital filter device that causes the last data of an immediately precedent input block to overlap with the input block of a time domain and generates an overlap block. The overlap block and the immediately precedent input block are each converted into a frequency domain block, subjected to filter processing, and converted into first and second time domain blocks. Among the overlap section of the first time domain block and the second time domain block, the front-end data of the first time domain block and the rear-end data of the temporal axis of the second time domain block are removed as a section of data that is to be removed, and output data is generated. An overlap amount is controlled on the basis of a distortion amount that is determined by comparing the removed section of the data of the first time region domain with the output section of the data of the overlap section of the second time domain block other than the removed section of said overlap section.

Abstract translation: 提供了一种数字滤波器装置，其使得先前输入块的最后数据与时域的输入块重叠，并产生重叠块。 重叠块和紧接在先的输入块各自被转换成经过滤波处理的频域块，并被转换成第一和第二时域块。 在第一时域块和第二时域块的重叠部分中，第一时域块的前端数据和第二时域块的时间轴的后端数据被去除为 要删除的数据，并生成输出数据。 基于通过将第一时域域的数据的去除部分与除去的第二时域块的重叠部分的数据的输出部分进行比较而确定的失真量来控制重叠量 所述重叠部分的部分。