Title:
適応音響システム及び音再生システム
Document Type and Number:
Japanese Patent JP3565846
Kind Code:
B2
Abstract:
An algorithm is described for sparsely updating the filter coefficients of an adaptive filter of an adaptive audio system to facilitate a high sampling rate without excessive processing capacity. Computer simulations are used to illustrate the potential for using an inverse filter matrix to manipulate the position of stereophonic images. The possibilities suggested could be used in conjunction with existing stereophonic recordings in order to improve stereophonic imaging in situations where the relative locations of loudspeakers and listener are constrained to be non-ideal. In one arrangement, real sound sources (S1, S2) provide to the listener the impression that the sources are at more widely-spaced positions (V1, V2). In another arrangement, employing four sound sources (S1, S2, S3, S4) the impression is created at two listener locations (M1, M2; M3, M4) that the sound is coming from a pair of sound sources positioned symmetrically of those listener locations.
Inventors:
Nelson Philip Arthur
Olderna Bustamante Felipe
Haruo Hamada
Olderna Bustamante Felipe
Haruo Hamada
Application Number:
JP50309394A
Publication Date:
September 15, 2004
Filing Date:
July 05, 1993
Export Citation:
Assignee:
ADAPTIVE AUDIO LIMITED
International Classes:
H03H21/00; H04S1/00; H04S7/00; (IPC1-7): H04S1/00; H04S7/00
Domestic Patent References:
| JP58050812A | ||||
| JP4056500A | ||||
| JP3294731A |
Attorney, Agent or Firm:
Tsutomu Adachi
Previous Patent: オリゴ糖輸送体を有するＤＮＡ配列，該輸送体を含有するプラスミド，細...
Next Patent: ビタミンＤ系の２５−カルボン酸−誘導体及びその誘導体を含有する調剤...
Next Patent: ビタミンＤ系の２５−カルボン酸−誘導体及びその誘導体を含有する調剤...