JP4662912B2 - 反響のある環境での音源定位に適当な測定ウィンドウの決定 - Google Patents
反響のある環境での音源定位に適当な測定ウィンドウの決定 Download PDFInfo
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- JP4662912B2 JP4662912B2 JP2006352183A JP2006352183A JP4662912B2 JP 4662912 B2 JP4662912 B2 JP 4662912B2 JP 2006352183 A JP2006352183 A JP 2006352183A JP 2006352183 A JP2006352183 A JP 2006352183A JP 4662912 B2 JP4662912 B2 JP 4662912B2
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- Prior art keywords
- envelope
- signal
- smoothing
- sound source
- source localization
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
- G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Stereophonic System (AREA)
Description
・到達の時間遅れ(Time Delay of Arrival,TDOA)または両耳間時間差(Interaural Time Difference,ITD)すなわち、異なるマイクロホンへの音波の伝搬時間の差と、
・両耳間強度差(Interaural Intensity Difference,IID)すなわち、音声経路内の、減衰を引き起こす障壁(たとえば、人工頭)に起因する、異なるマイクロホンでの音声信号の強度の差と、
・両耳間包絡線の差(Interaural Envelope Difference,IED)すなわち、分解されていない高調波(unresolved harmonics)の包絡線信号で測定される伝搬時間の差と
である。
これらの点140、150、および160は、必ず、入力包絡線の極大の直後に現れる。しかし、入力包絡線のすべての最大値が、測定点をもたらすわけではない。滑らかな包絡線信号を超える最大値だけが、測定点になる。その結果、より大きい最大値に続くより小さい最大値は、測定点を生成しない。それを行うことによって、このアルゴリズムは、続く最大値が、前の最大値より小さく、まもなく続く場合に、その続く最大値が、残響によって大きく影響されることを考慮に入れる。これは、最大値の発生の後の抑制期間になる。前に述べた、従来技術を表すアルゴリズムとは対照的に、この抑制相は、固定されているのではなく、信号依存である。特に、大きい最大値がより小さい最大値のすぐ後に続く場合に、このより大きい最大値も、測定点を生成する。
120 包絡線
130 平滑化
140、150、160 測定点
Claims (13)
- 前記平滑化が、追加の抑制係数(θ)を使用する、請求項1に記載の方法。
- 前記平滑化の前記時定数(τ)と前記抑制係数(θ)とが、部屋特性の測定に基づいて適応的に決定される、請求項2または3に記載の方法。
- 前記計算が、対数領域で実行される、請求項1から4のいずれか一項に記載の方法。
- 音源定位の前記キューが、
到達の時間遅れ(TDOA)と、
両耳間強度差(IID)と、
両耳間包絡線の差(IED)と
のうちの1つまたは複数を含む、請求項1から5のいずれか一項に記載の方法。 - 前記測定点に基づいて測定ウィンドウを形成するステップをさらに含む、請求項1に記載の方法。
- 前記測定ウィンドウの長さが、固定されている、請求項7に記載の方法。
- 前記測定ウィンドウの長さが、滑らかな包絡線信号によって決定される、請求項7に記載の方法。
- 前記信号が、帯域通過信号である、請求項1に記載の方法。
- 前記包絡線が、分解されていない高調波の包絡線変調の包絡線である、請求項1に記載の方法。
- 前記平滑化が、一次無限インパルス応答(IIR)フィルタによって実行される、請求項1に記載の方法。
- コンピュータで実行される時に、請求項1から12のいずれかに記載の方法を実現する、コンピュータ・ソフトウェア・プログラム。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06000319A EP1806593B1 (en) | 2006-01-09 | 2006-01-09 | Determination of the adequate measurement window for sound source localization in echoic environments |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2007183637A JP2007183637A (ja) | 2007-07-19 |
JP2007183637A5 JP2007183637A5 (ja) | 2011-01-06 |
JP4662912B2 true JP4662912B2 (ja) | 2011-03-30 |
Family
ID=36096338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006352183A Expired - Fee Related JP4662912B2 (ja) | 2006-01-09 | 2006-12-27 | 反響のある環境での音源定位に適当な測定ウィンドウの決定 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8150062B2 (ja) |
EP (1) | EP1806593B1 (ja) |
JP (1) | JP4662912B2 (ja) |
DE (1) | DE602006001051T2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103796150B (zh) * | 2012-10-30 | 2017-02-15 | 华为技术有限公司 | 音频信号的处理方法、装置及系统 |
US10616705B2 (en) | 2017-10-17 | 2020-04-07 | Magic Leap, Inc. | Mixed reality spatial audio |
CN111713091A (zh) | 2018-02-15 | 2020-09-25 | 奇跃公司 | 混合现实虚拟混响 |
JP7446420B2 (ja) * | 2019-10-25 | 2024-03-08 | マジック リープ, インコーポレイテッド | 反響フィンガプリント推定 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003270034A (ja) * | 2002-03-15 | 2003-09-25 | Nippon Telegr & Teleph Corp <Ntt> | 音情報解析方法、装置、プログラム、および記録媒体 |
JP2006084974A (ja) * | 2004-09-17 | 2006-03-30 | Nissan Motor Co Ltd | 音声入力装置 |
JP2008542798A (ja) * | 2005-05-05 | 2008-11-27 | 株式会社ソニー・コンピュータエンタテインメント | コンピュータ対話型処理と共に使用する選択的音源聴音 |
JP2009509362A (ja) * | 2005-06-24 | 2009-03-05 | ネイダーランゼ、オルガニザティー、ボー、トゥーゲパストナトゥールウェテンシャッペルーク、オンダーツォーク、ティーエヌオー | 複数の音源によって放射される信号から音響信号を抽出するためのシステムおよび方法。 |
Family Cites Families (18)
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US4207623A (en) * | 1955-02-08 | 1980-06-10 | The United States Of America As Represented By The Secretary Of The Navy | Acoustic mine mechanism |
US3838593A (en) * | 1972-11-06 | 1974-10-01 | Exxon Research Engineering Co | Acoustic leak location and detection system |
US4581758A (en) * | 1983-11-04 | 1986-04-08 | At&T Bell Laboratories | Acoustic direction identification system |
US4628529A (en) * | 1985-07-01 | 1986-12-09 | Motorola, Inc. | Noise suppression system |
SE456279B (sv) * | 1986-09-16 | 1988-09-19 | Bost & Co Ab | Sett och anordning for att tidsbestemma en akustisk puls |
US5325436A (en) * | 1993-06-30 | 1994-06-28 | House Ear Institute | Method of signal processing for maintaining directional hearing with hearing aids |
US5729612A (en) * | 1994-08-05 | 1998-03-17 | Aureal Semiconductor Inc. | Method and apparatus for measuring head-related transfer functions |
US6990205B1 (en) * | 1998-05-20 | 2006-01-24 | Agere Systems, Inc. | Apparatus and method for producing virtual acoustic sound |
US6826284B1 (en) * | 2000-02-04 | 2004-11-30 | Agere Systems Inc. | Method and apparatus for passive acoustic source localization for video camera steering applications |
US7076433B2 (en) * | 2001-01-24 | 2006-07-11 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus and program for separating a desired sound from a mixed input sound |
US20030035553A1 (en) * | 2001-08-10 | 2003-02-20 | Frank Baumgarte | Backwards-compatible perceptual coding of spatial cues |
GB0120450D0 (en) * | 2001-08-22 | 2001-10-17 | Mitel Knowledge Corp | Robust talker localization in reverberant environment |
EP1881486B1 (en) * | 2002-04-22 | 2009-03-18 | Koninklijke Philips Electronics N.V. | Decoding apparatus with decorrelator unit |
US7333622B2 (en) * | 2002-10-18 | 2008-02-19 | The Regents Of The University Of California | Dynamic binaural sound capture and reproduction |
FI118247B (fi) * | 2003-02-26 | 2007-08-31 | Fraunhofer Ges Forschung | Menetelmä luonnollisen tai modifioidun tilavaikutelman aikaansaamiseksi monikanavakuuntelussa |
EP1586421B1 (en) | 2004-04-16 | 2008-03-05 | Honda Research Institute Europe GmbH | Self-calibrating orienting system for a manipulating device |
EP1600791B1 (en) | 2004-05-26 | 2009-04-01 | Honda Research Institute Europe GmbH | Sound source localization based on binaural signals |
JP2006060720A (ja) * | 2004-08-24 | 2006-03-02 | Hitachi Ltd | 集音システム |
-
2006
- 2006-01-09 DE DE602006001051T patent/DE602006001051T2/de active Active
- 2006-01-09 EP EP06000319A patent/EP1806593B1/en not_active Expired - Fee Related
- 2006-12-27 JP JP2006352183A patent/JP4662912B2/ja not_active Expired - Fee Related
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2007
- 2007-01-04 US US11/619,832 patent/US8150062B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003270034A (ja) * | 2002-03-15 | 2003-09-25 | Nippon Telegr & Teleph Corp <Ntt> | 音情報解析方法、装置、プログラム、および記録媒体 |
JP2006084974A (ja) * | 2004-09-17 | 2006-03-30 | Nissan Motor Co Ltd | 音声入力装置 |
JP2008542798A (ja) * | 2005-05-05 | 2008-11-27 | 株式会社ソニー・コンピュータエンタテインメント | コンピュータ対話型処理と共に使用する選択的音源聴音 |
JP2009509362A (ja) * | 2005-06-24 | 2009-03-05 | ネイダーランゼ、オルガニザティー、ボー、トゥーゲパストナトゥールウェテンシャッペルーク、オンダーツォーク、ティーエヌオー | 複数の音源によって放射される信号から音響信号を抽出するためのシステムおよび方法。 |
Also Published As
Publication number | Publication date |
---|---|
DE602006001051T2 (de) | 2009-07-02 |
US20070160241A1 (en) | 2007-07-12 |
EP1806593B1 (en) | 2008-04-30 |
US8150062B2 (en) | 2012-04-03 |
EP1806593A1 (en) | 2007-07-11 |
DE602006001051D1 (de) | 2008-06-12 |
JP2007183637A (ja) | 2007-07-19 |
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