Title:
適応性ビーム形成方法及び装置
Document Type and Number:
Japanese Patent JPH09512676
Kind Code:
A
Abstract:
Methods and systems for beamforming are disclosed that include a signal processor that can dynamically determine the relative time delays between a plurality of frequency-dependent signals. The signal processor can adaptively generate a beam signal by aligning the plural frequency-dependent signals according to the relative time delays between the signals. The signal processor can store one frequency-dependent signal as a reference signal and can align the remaining frequency-dependent signals relative to this reference signal. One advantage of the signal processor is that it can align the plural frequency-dependent signals generated by an array of microphones that can be arranged in a linear, two dimensional or three dimensional array and located in a room environment.
Inventors:
シルバーマン ハーベイ エフ．
ブランドステイン マイケル エス．
ブランドステイン マイケル エス．
Application Number:
JP52778295A
Publication Date:
December 16, 1997
Filing Date:
April 20, 1995
Export Citation:
Assignee:
ブラウン ユニバーシティ リサーチ ファンデーション
International Classes:
G01R25/00; G01R25/04; G01S3/48; G01S7/02; G01S7/523; G10K11/34; H01Q3/26; H01Q3/38; H04R1/40; H04R3/00; H04R29/00; H04R25/00; (IPC1-7): H04R3/00; G01R25/00; G01R25/04; G01S3/48; G01S7/02; G01S7/523; H01Q3/26; H01Q3/38; H04R1/40
Attorney, Agent or Firm:
石田 喜樹