Title:
DIGITAL FILTER, AUDIO SIGNAL PROCESSING SYSTEM, DIGITAL FILTER DESIGN METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2021145222
Kind Code:
A
Abstract:
To flatten the gain and phase characteristics of a digital filter.SOLUTION: In a digital filter that reduces a DC component of an input data string, when a cutoff frequency F0 is ω0/2π and a Q value is Q, the transfer function H (s) is expressed by the following formula. The design flow of the digital filter executed by a computer calculates the coefficient of the digital filter from setting of the sampling frequency FS of the digital filter, setting of the cutoff frequency, and setting of the Q value corresponding to the gain at the cutoff frequency.SELECTED DRAWING: Figure 5
Inventors:
WADA ARIKATSU
Application Number:
JP2020042196A
Publication Date:
September 24, 2021
Filing Date:
March 11, 2020
Export Citation:
Assignee:
AUDIO TECHNICA KK
International Classes:
H03H17/00; G06F17/10; H03H17/02
Attorney, Agent or Firm:
Izumidori
Hisashine Kyonori
Kensuke Terakawa
Hisashine Kyonori
Kensuke Terakawa