JP4468447B2 - 自給式呼吸装置システム内で発生した音声信号を等化するための方法および装置 - Google Patents
自給式呼吸装置システム内で発生した音声信号を等化するための方法および装置 Download PDFInfo
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- JP4468447B2 JP4468447B2 JP2007519235A JP2007519235A JP4468447B2 JP 4468447 B2 JP4468447 B2 JP 4468447B2 JP 2007519235 A JP2007519235 A JP 2007519235A JP 2007519235 A JP2007519235 A JP 2007519235A JP 4468447 B2 JP4468447 B2 JP 4468447B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/26—Communication means, e.g. means for signalling the presence of divers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/20—Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
- G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
- G10L2021/03643—Diver speech
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Percussion Or Vibration Massage (AREA)
- Transmitters (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
Claims (9)
- 音声信号が入るマスクを含み、音声に影響を与える伝達関数を有する加圧空気供給システム内で発生する前記音声信号を等化するための方法であって、
吸気ノイズに基づいて吸気ノイズ・モデルを生成するステップと、
前記音声信号を含む入力信号を受信するステップと、
前記ノイズ・モデルに基づいて前記音声信号を等化するステップであって、前記ノイズ・モデルが、前記音声信号の等化により、前記伝達関数の影響の少なくとも一部が除去されるように、前記マスクの伝達関数を特徴付けるステップと、を含む方法。 - 前記吸気ノイズ・モデルを生成する前記ステップが、
前記吸気ノイズの少なくとも1つのデジタル化したサンプルを生成するために前記吸気ノイズをサンプリングするステップと、
前記少なくとも1つのデジタル化したサンプルに窓処理するステップと、
前記少なくとも1つの窓処理したデジタル化したサンプルから一組の自己相関係数を決定するステップと、
前記一組の自己相関係数に基づいて一組の線形予測符号化(LPC)係数を生成するステップと、
前記一組のLPC係数からLPCフィルタを生成するステップと、を含む請求項1に記載の方法。 - 前記ノイズ・モデルがデジタル信号として表示され、
デジタル・フィルタが、一組の自己相関係数から生成する一組のLPC係数に基づく線形予測符号化(LPC)フィルタであり、
前記音声信号が前記LPCフィルタの倒置により等化される請求項1に記載の方法。 - 前記等化した音声信号をポストフィルタ処理するステップをさらに含む請求項1に記載の方法。
- 前記入力信号が吸気ノイズをさらに含み、前記方法が前記ノイズ・モデルを更新するステップをさらに含む請求項1に記載の方法。
- 前記ノイズ・モデルを更新する前記ステップが、
類似性の測定値を入手するために前記入力信号を前記ノイズ・モデルと比較するステップと、
前記入力信号の前記吸気ノイズを検出するために前記類似性の測定値を少なくとも1つの閾値と比較するステップであって、前記ノイズ・モデルが、前記検出した吸気ノイズに基づいて更新されるステップとを含む請求項5に記載の方法。 - 前記ノイズ・モデルが、第1の組の自己相関係数に基づいて生成する一組のLPC係数に基づく線形予測符号化(LPC)フィルタであり、前記ノイズ・モデルを更新する前記ステップが、
前記検出した吸気ノイズの少なくとも1つのデジタル化したサンプルを生成するために前記検出した吸気ノイズをサンプリングするステップと、
前記少なくとも1つのデジタル化したサンプルから第2の組の自己相関係数を決定するステップと、
前記第1および第2の組の自己相関係数の関数として前記第1の組の自己相関係数を更新するステップと、
前記更新した一組の自己相関係数に基づいて前記一組のLPC係数を更新するステップと、
前記更新した一組のLPC係数に基づいて前記LPCフィルタを更新するステップと、をさらに含む請求項6に記載の方法。 - 音声信号が入るマスクを含み、音声に影響を与える伝達関数を有する加圧空気供給システムで前記音声信号を等化するためのデバイスであって、
処理素子と、
前記処理素子と結合していて、
吸気ノイズに基づいて吸気ノイズ・モデルを生成するステップと、
前記音声信号を含む入力信号を受信するステップと、
前記ノイズ・モデルに基づいて前記音声信号を等化するステップであって、前記ノイズ・モデルが、前記音声信号の等化により前記伝達関数の影響の少なくとも一部が除去されるように、前記マスクの伝達関数を特徴付けるステップと
を実行するように、処理装置に命令するためのコンピュータ・プログラムを格納するためのメモリ素子と
を備えるデバイス。 - 音声信号を等化するためのシステムであって、
前記音声信号が入るマスクを含み、音声に影響を与える伝達関数を有する加圧空気供給システムと、
前記加圧空気供給システムと結合している通信システムとを備え、該システムが、
処理素子と、
前記処理素子と結合していて、
吸気ノイズに基づいて吸気ノイズ・モデルを生成するステップと、
前記音声信号を含む入力信号を受信するステップと、
前記ノイズ・モデルに基づいて前記音声信号を等化するステップであって、前記ノイズ・モデルが、前記音声信号の等化により、前記伝達関数の影響の少なくとも一部が除去されるように、前記マスクの伝達関数を特徴付けるステップと、
を実行するように、処理装置に命令するためのコンピュータ・プログラムを格納するためのメモリ素子と、
を備えるシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/882,450 US7254535B2 (en) | 2004-06-30 | 2004-06-30 | Method and apparatus for equalizing a speech signal generated within a pressurized air delivery system |
PCT/US2005/019827 WO2006007290A2 (en) | 2004-06-30 | 2005-06-06 | Method and apparatus for equalizing a speech signal generated within a self-contained breathing apparatus system |
Publications (2)
Publication Number | Publication Date |
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JP2008505538A JP2008505538A (ja) | 2008-02-21 |
JP4468447B2 true JP4468447B2 (ja) | 2010-05-26 |
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JP2007519235A Expired - Fee Related JP4468447B2 (ja) | 2004-06-30 | 2005-06-06 | 自給式呼吸装置システム内で発生した音声信号を等化するための方法および装置 |
Country Status (9)
Country | Link |
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US (1) | US7254535B2 (ja) |
EP (1) | EP1769493B1 (ja) |
JP (1) | JP4468447B2 (ja) |
CN (1) | CN101010731A (ja) |
AU (1) | AU2005262623B2 (ja) |
CA (1) | CA2572715C (ja) |
DE (1) | DE602005008974D1 (ja) |
MX (1) | MXPA06015235A (ja) |
WO (1) | WO2006007290A2 (ja) |
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-
2004
- 2004-06-30 US US10/882,450 patent/US7254535B2/en active Active
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2005
- 2005-06-06 JP JP2007519235A patent/JP4468447B2/ja not_active Expired - Fee Related
- 2005-06-06 DE DE602005008974T patent/DE602005008974D1/de not_active Expired - Fee Related
- 2005-06-06 MX MXPA06015235A patent/MXPA06015235A/es not_active Application Discontinuation
- 2005-06-06 CN CNA2005800219855A patent/CN101010731A/zh active Pending
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EP1769493A4 (en) | 2007-08-22 |
CA2572715A1 (en) | 2006-01-19 |
WO2006007290A2 (en) | 2006-01-19 |
AU2005262623A1 (en) | 2006-01-19 |
AU2005262623B2 (en) | 2008-07-03 |
EP1769493B1 (en) | 2008-08-13 |
US7254535B2 (en) | 2007-08-07 |
WO2006007290B1 (en) | 2006-08-24 |
DE602005008974D1 (de) | 2008-09-25 |
CN101010731A (zh) | 2007-08-01 |
EP1769493A2 (en) | 2007-04-04 |
US20060020451A1 (en) | 2006-01-26 |
JP2008505538A (ja) | 2008-02-21 |
WO2006007290A3 (en) | 2006-06-01 |
CA2572715C (en) | 2012-04-03 |
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