JP2005346078A - 2つの調波信号の共通源の判定方法 - Google Patents
2つの調波信号の共通源の判定方法 Download PDFInfo
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- JP2005346078A JP2005346078A JP2005162480A JP2005162480A JP2005346078A JP 2005346078 A JP2005346078 A JP 2005346078A JP 2005162480 A JP2005162480 A JP 2005162480A JP 2005162480 A JP2005162480 A JP 2005162480A JP 2005346078 A JP2005346078 A JP 2005346078A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012795 verification Methods 0.000 claims abstract description 6
- 230000001419 dependent effect Effects 0.000 claims abstract description 5
- 238000011156 evaluation Methods 0.000 claims abstract description 4
- 230000004044 response Effects 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 6
- 238000012886 linear function Methods 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims description 4
- 235000009413 Ratibida columnifera Nutrition 0.000 claims description 3
- 241000510442 Ratibida peduncularis Species 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000005311 autocorrelation function Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 210000003926 auditory cortex Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
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- 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
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
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- 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
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- Acoustics & Sound (AREA)
- Multimedia (AREA)
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
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Abstract
【解決手段】本発明は、基礎をなすバンドパス・フィルタによってカバーされる周波数の調波関係およびゼロ交差点、極大点、極小点、公差しきい値などのシヌソイド信号の有意点の距離の評価を含む方法を提供する。これら有意ポイントの距離の評価によって、音声信号の場合に音声器官によって導入される周波数依存遅延を補償しながら、検証中の2つの調波の間の同期が検出される。
【選択図】図3
Description
A. Bregman, "Auditory Scene Analysis", MIT Press, 1990 G. Langner, H. Schulze, M. Sans, and P. Heil, "The topographic representation of periodicity pitch in the auditory cortex", Proc. of the NATO Adv. Study Inst. on Comp. Hearing, pages 91--97, 1998 G. Hu and D. Wang, "Monaural speech segregation based on pitch tracking and amplitude", IEEE Trans. On Neural Networks, 2004 B. Moore, "An Introduction to the Psychology of Hearing", Fifth Edition, Academic Press, 2003
− fx(x+l)*fo:基本周波数のx番目の高調波になりうる第1の信号14の周波数、
− fy(y+1)*fo:基本周波数のy番目の高調波になりうる第2の信号15の周波数。
14、15 バンドパス信号または調波
21、22 ゼロ交差点
23、24 極大/極小点
25、26 定数との交差点
32、33 距離
39 証拠値
Claims (14)
- 2つのバンドパス信号が共通の基本周波数の調波であるか否かを示す尺度である証拠値を判定する方法であって、
前記方法は、基礎をなすバンドパス・フィルタによってカバーされた周波数の調波関係、およびゼロ交差点、極大点、極小点、公差しきい値などのシヌソイド信号の有意点の距離を評価し、
前記有意点の距離の評価は、周波数依存遅延を補償しながら、検証中の2つの調波の間の自動同期化を実行する、方法。 - 前記評価された距離が、0と1の範囲の非線形関数によって証拠値に対応付けられる、請求項1に記載の方法。
- 全ての信号が、基本周波数となりうる全ての信号と比較され、起こりうる全ての調波と相互に比較される、請求項1または請求項2に記載の方法。
- 2つの信号の間の誤応答を除去する方法であって、
該方法が、異なる調波との応答を生成する可能性のある応答が検出される場合抑止信号を生成するステップを含み、
より低い基本周波数およびその応答が、より高い基本周波数を抑止する、方法。 - 調波の証拠値を、有力基本周波数と調波関係にある非有力基本周波数から、該有力基本周波数および対応する調波へ移動させる方法。
- 周波数軸に沿ってメキシカンハット・フィルタを適用することによって隣接するバンドパス・フィルタ・チャネル間のクロストークを削減する方法。
- コンピュータ装置での実行時に、請求項1乃至請求項6のいずれかに記載の方法を実施するように適合されたコンピュータ・ソフトウェア・プログラム。
- 2つのバンドパス信号が共通の基本周波数の調波であるか否かを示す尺度である証拠値を判定するコンピュータ処理手段であって、
該コンピュータ処理手段が、
基礎をなすバンドパス・フィルタによってカバーされた周波数の調波関係を評価する手段と、
ゼロ交差点、極大点、極小点、公差しきい値などの、シヌソイド信号の有意点距離を評価する手段と、
を含み、
前記有意点の距離の評価は、周波数依存遅延を補償しながら、検証中の2つの調波の間の自動同期化を実行する、
コンピュータ処理手段。 - 前記評価された距離を0と1の範囲の非線形関数によって証拠値に対応付けする手段を含む、請求項8に記載のコンピュータ処理手段。
- 全ての信号を基本周波数となりうる全ての信号と比較し、起こりうる全ての調波を相互に比較する手段を含む、請求項8または請求項9に記載のコンピュータ処理手段。
- 請求項4乃至請求項6のいずれかに記載の方法を実施するように設計されたコンピュータ処理手段。
- 基礎をなす基本周波数に基づいてモノラル記録された音源の分離のために使用される、請求項1乃至請求項6のいずれかに記載の方法。
- 信号源からノイズを分離するために使用される、請求項1乃至請求項6のいずれかに記載の方法。
- 信号に共通に存在する種々の信号源から発生する信号コンポーネントを分離するために使用される、請求項1乃至請求項6のいずれかに記載の方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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EP04013275.5 | 2004-06-04 | ||
EP04013275 | 2004-06-04 | ||
EP04017773.5 | 2004-07-27 | ||
EP04017773A EP1605437B1 (en) | 2004-06-04 | 2004-07-27 | Determination of the common origin of two harmonic components |
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JP2005346078A true JP2005346078A (ja) | 2005-12-15 |
JP4790318B2 JP4790318B2 (ja) | 2011-10-12 |
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US (1) | US7895033B2 (ja) |
EP (1) | EP1605437B1 (ja) |
JP (1) | JP4790318B2 (ja) |
Cited By (1)
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JP7497040B2 (ja) | 2020-10-15 | 2024-06-10 | 東京都公立大学法人 | 音響信号処理装置、音響信号処理方法及びプログラム |
Families Citing this family (9)
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CN102110436B (zh) * | 2009-12-28 | 2012-05-09 | 中兴通讯股份有限公司 | 一种基于语音包络特征的标志音识别方法及装置 |
US9082416B2 (en) * | 2010-09-16 | 2015-07-14 | Qualcomm Incorporated | Estimating a pitch lag |
US8620646B2 (en) * | 2011-08-08 | 2013-12-31 | The Intellisis Corporation | System and method for tracking sound pitch across an audio signal using harmonic envelope |
US11723579B2 (en) | 2017-09-19 | 2023-08-15 | Neuroenhancement Lab, LLC | Method and apparatus for neuroenhancement |
US11717686B2 (en) | 2017-12-04 | 2023-08-08 | Neuroenhancement Lab, LLC | Method and apparatus for neuroenhancement to facilitate learning and performance |
WO2019133997A1 (en) | 2017-12-31 | 2019-07-04 | Neuroenhancement Lab, LLC | System and method for neuroenhancement to enhance emotional response |
US11364361B2 (en) | 2018-04-20 | 2022-06-21 | Neuroenhancement Lab, LLC | System and method for inducing sleep by transplanting mental states |
CN113382683A (zh) | 2018-09-14 | 2021-09-10 | 纽罗因恒思蒙特实验有限责任公司 | 改善睡眠的系统和方法 |
US11786694B2 (en) | 2019-05-24 | 2023-10-17 | NeuroLight, Inc. | Device, method, and app for facilitating sleep |
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JP2005055612A (ja) * | 2003-08-01 | 2005-03-03 | Korg Inc | ピッチ検出方法 |
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2004
- 2004-07-27 EP EP04017773A patent/EP1605437B1/en not_active Expired - Fee Related
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2005
- 2005-05-31 US US11/142,879 patent/US7895033B2/en not_active Expired - Fee Related
- 2005-06-02 JP JP2005162480A patent/JP4790318B2/ja not_active Expired - Fee Related
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Cited By (1)
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JP7497040B2 (ja) | 2020-10-15 | 2024-06-10 | 東京都公立大学法人 | 音響信号処理装置、音響信号処理方法及びプログラム |
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US20050278173A1 (en) | 2005-12-15 |
US7895033B2 (en) | 2011-02-22 |
JP4790318B2 (ja) | 2011-10-12 |
EP1605437A1 (en) | 2005-12-14 |
EP1605437B1 (en) | 2007-08-29 |
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