Title:
オーディオ用のデジタル信号処理装置ならびにそれを用いた車載オーディオ装置および電子機器
Document Type and Number:
Japanese Patent JP6737597
Kind Code:
B2
Abstract:
A digital signal processor for audio includes: an interface circuit communicating with an microcomputer; a multi-band equalizer including digital filters corresponding respectively to bands, wherein the frequency characteristic of each digital filter is changed according to coefficient group; a memory; and a coefficient setting circuit setting the coefficient group of each digital filter, wherein the frequency characteristic of the multi-band equalizer is selected from presets, wherein, when the digital signal processor start, the interface circuit receives setting data corresponding to the presets from the microcomputer and stores the received setting data in the memory, and wherein, at the time of audio reproduction, the interface circuit receives selection data to designate one of the plurality of presets and the coefficient setting circuit sets the coefficient group of each digital filter according to one of the setting data stored in the memory, the one setting data corresponding to the selection data.
Inventors:
Mitsuteru Sakai
Application Number:
JP2016003685A
Publication Date:
August 12, 2020
Filing Date:
January 12, 2016
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H03G5/02
Domestic Patent References:
| JP2009147629A | ||||
| JP8250978A | ||||
| JP11331995A | ||||
| JP2250420A | ||||
| JP2010233198A | ||||
| JP2015201729A |
Foreign References:
| US20090015594 |
Attorney, Agent or Firm:
Sakaki Morishita
Masaki Taiki
Masaki Taiki