Invention Grant
US07885991B2 Digital filter having a fir filter and a warped fir filter, and a listening device including such a digital filter
有权
具有冷杉滤光器和翘曲冷杉滤光器的数字滤光器，以及包括这种数字滤波器的收听装置
- Patent Title: Digital filter having a fir filter and a warped fir filter, and a listening device including such a digital filter
- Patent Title (中): 具有冷杉滤光器和翘曲冷杉滤光器的数字滤光器，以及包括这种数字滤波器的收听装置
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Application No.: US10547687Application Date: 2004-03-03
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Publication No.: US07885991B2Publication Date: 2011-02-08
- Inventor: Thomas Behrens , Ulrik Kjems , Thomas Bo Elmedyb
- Applicant: Thomas Behrens , Ulrik Kjems , Thomas Bo Elmedyb
- Applicant Address: DK Smorum
- Assignee: Oticon A/S
- Current Assignee: Oticon A/S
- Current Assignee Address: DK Smorum
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: DK200300338 20030304
- International Application: PCT/DK2004/000141 WO 20040303
- International Announcement: WO2004/079901 WO 20040916
- Main IPC: G06F17/10
- IPC: G06F17/10
Abstract:
A digital filter includes at least a first and a second delayed summation line. One of the delay lines includes a warped finite impulse response (FIR) filter and the other line is a FIR filter. Midpoint elements from the first delayed summation line are used as input to the second delayed summation line. Output from the first delayed summation line is delayed with a delay corresponding to the total delay of the second delayed summation line and the delayed output from the first delayed summation line is added to output from the second delayed summation line to faun a new output.
Public/Granted literature
- US20070094319A1 Digital filter and listening device Public/Granted day:2007-04-26
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