JP2007068125A - 信号処理の方法及び装置並びにコンピュータプログラム - Google Patents
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Abstract
【解決手段】複数の入力信号(例えば複数のマイクロフォンで得られた信号)を用いて基準信号を発生し、該基準信号を用いて前記複数の入力信号に対してキャリブレーションを行うことを特徴とする。更に、前記複数の入力信号を自己の平均値で正規化して正規化入力信号を求め、該正規化入力信号を前記基準信号で拡大・縮小することによって、前記複数の入力信号に対してキャリブレーションを行っている。
【選択図】図1
Description
200 固定ビームフォーマ
201 信号方向推定部
300 ブロッキング行列
400 遅延素子
500 多入力キャンセラ
600 出力端子
700、701、702、800、801、802、803、804 等化器
710 利得計算部
7110〜711M-1、7140〜714M-1 乗算器
7120〜712M-1、718〜718-1 平均化部
7130〜713M-1 数計算部
715、719、722 基準信号発生部
716、720 補正位相計算部
717 位相調整部
721 相対遅延計算部
Claims (25)
- 複数の入力信号を用いて基準信号を発生し、該基準信号を用いて前記複数の入力信号に対してキャリブレーションを行うことを特徴とする信号処理の方法。
- 前記複数の入力信号を自己の平均値で正規化して正規化入力信号を求め、
該正規化入力信号を前記基準信号で拡大・縮小することによって、
前記複数の入力信号に対してキャリブレーションを行う
ことを特徴とする請求項1に記載の信号処理の方法。 - 前記基準信号として入力信号の振幅または電力を用いることを特徴とする請求項1又は2に記載の信号処理の方法。
- 前記基準信号として入力信号の遅延を用いることを特徴とする請求項1、2又は3に記載の信号処理の方法。
- 前記基準信号として入力信号の位相を用いることを特徴とする請求項1、2又は3に記載の信号処理の方法。
- 複数の入力信号を帯域分割してからキャリブレーションを行うことを特徴とする請求項1から5のいずれかに記載の信号処理の方法。
- 複数の入力信号に対してキャリブレーションを行って等化入力信号を生成し、該複数の等化入力信号を用いて特定の方向から到来する信号に対する指向性(通過特性)を形成することを特徴とする請求項1から6のいずれかに記載の信号処理の方法。
- 前記複数の等化入力信号を用いて特定の方向から到来する信号に対するゼロ指向性(遮断特性)を形成し、前記指向性と前記ゼロ指向性を用いて前記入力信号を適応処理することによって前記入力信号に含まれる目的信号を強調することを特徴とする請求項7に記載の信号処理の方法。
- 前記指向性の形成を適応的に遂行することを特徴とする請求項7又は8に記載の信号処理の方法。
- 前記ゼロ指向性の形成を適応的に遂行することを特徴とする請求項7又は8に記載の信号処理の方法。
- 前記指向性の形成を、一般化サイドローブキャンセラで行うことを特徴とする請求項7から10のいずれかに記載の信号処理の方法。
- 複数の入力信号に対してキャリブレーションを行って等化入力信号を生成し、該複数の等化入力信号を用いて特定の方向から到来する信号の到来方向を推定することを特徴とする請求項1から6のいずれかに記載の信号処理の方法。
- 複数の入力信号を用いて基準信号を発生する基準信号発生部と、該基準信号を用いて前記複数の入力信号に対してキャリブレーションを行う等化器を有することを特徴とする信号処理の装置。
- 複数の入力信号を用いて基準信号を発生する基準信号発生部と、前記複数の入力信号の平均値を求める平均化部と、前記基準信号と前記平均値とを用いて利得を計算する利得計算部と、該利得を用いて前記複数の入力信号に対してキャリブレーションを行う等化器を有することを特徴とする請求項13に記載の信号処理の装置。
- 前記基準信号発生部が基準振幅または基準電力を発生することを特徴とする請求項13又は14に記載の信号処理の装置。
- 前記基準信号発生部が基準遅延を発生することを特徴とする請求項13、14又は15に記載の信号処理の装置。
- 前記基準信号発生部が基準位相を発生することを特徴とする請求項13、14又は15に記載の信号処理の装置。
- 複数の入力信号を帯域分割して帯域分割信号を発生する帯域分割部を有し、帯域分割信号に対してキャリブレーションを行う等化器を有することを特徴とする請求項13から17のいずれかに記載の信号処理の装置。
- 複数の入力信号に対してキャリブレーションを行って等化入力信号を生成する等化器と、該複数の等化入力信号を用いて特定の方向から到来する信号に対する指向性(通過特性)を形成する指向性形成部を有することを特徴とする請求項13から18のいずれかに記載の信号処理の装置。
- 前記複数の等化入力信号を用いて特定の方向から到来する信号に対するゼロ指向性(遮断特性)を形成するゼロ指向性形成部と、前記指向性と前記ゼロ指向性を用いて前記入力信号を適応処理することによって前記入力信号に含まれる目的信号を強調する適応ビーム形成部を有することを特徴とする請求項19に記載の信号処理の装置。
- 前記指向性形成部は、適応的に指向性を形成する適応指向性形成部であることを特徴とする請求項19又は20に記載の信号処理の装置。
- 前記ゼロ指向性形成部は、適応的にゼロ指向性を形成する適応ゼロ指向性形成部であることを特徴とする請求項19又は20に記載の信号処理の装置。
- 前記適応ビーム形成部は、一般化サイドローブキャンセラであることを特徴とする請求項19から22のいずれかに記載の信号処理の装置。
- 複数の入力信号に対してキャリブレーションを行って等化入力信号を生成する等化器と、該複数の等化入力信号を用いて特定の方向から到来する信号の到来方向を推定する信号到来方向推定部を有することを特徴とする請求項13から18のいずれかに記載の信号処理の装置。
- 複数の入力信号をキャリブレーションするコンピュータプログラムであって、
複数の入力信号を用いて基準信号を発生するステップと、
前記複数の入力信号を自己の平均値で正規化して正規化入力信号を求めるステップと、
該正規化入力信号を前記基準信号で拡大・縮小するステップと
を具え、前記複数の入力信号に対してキャリブレーションを行うことを特徴とするコンピュータプログラム。
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JP2005255158A JP4701931B2 (ja) | 2005-09-02 | 2005-09-02 | 信号処理の方法及び装置並びにコンピュータプログラム |
CN200610128873.6A CN1925693B (zh) | 2005-09-02 | 2006-08-31 | 校准从传感器阵列提供的信道信号的信号处理***和方法 |
EP06018214.4A EP1804549B1 (en) | 2005-09-02 | 2006-08-31 | Signal processing system and method for calibrating channel signals supplied from an array of sensors having different operating characteristics |
CN201010522186.9A CN102036144B (zh) | 2005-09-02 | 2006-08-31 | 校准从传感器阵列提供的信道信号的信号处理***和方法 |
US11/514,204 US8050717B2 (en) | 2005-09-02 | 2006-09-01 | Signal processing system and method for calibrating channel signals supplied from an array of sensors having different operating characteristics |
KR1020060084164A KR100855132B1 (ko) | 2005-09-02 | 2006-09-01 | 상이한 동작 특성을 갖는 센서의 어레이로부터 공급된 채널 신호를 처리하는 신호 처리 시스템 및 방법, 어레이 신호 처리 시스템, 및 교정 시스템 |
US13/276,815 US8223989B2 (en) | 2005-09-02 | 2011-10-19 | Signal processing system and method for calibrating channel signals supplied from an array of sensors having different operating characteristics |
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KR20070026235A (ko) | 2007-03-08 |
KR100855132B1 (ko) | 2008-08-28 |
EP1804549A2 (en) | 2007-07-04 |
US8223989B2 (en) | 2012-07-17 |
CN102036144A (zh) | 2011-04-27 |
CN1925693A (zh) | 2007-03-07 |
EP1804549A3 (en) | 2010-10-27 |
US8050717B2 (en) | 2011-11-01 |
US20120033725A1 (en) | 2012-02-09 |
CN1925693B (zh) | 2010-12-15 |
CN102036144B (zh) | 2013-07-17 |
JP4701931B2 (ja) | 2011-06-15 |
EP1804549B1 (en) | 2016-03-30 |
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