JP6178840B2 - オーディオセグメントを識別するための方法 - Google Patents
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Description
b.複数の加入者によって共有されるボイスメールグリーティング(たとえば、「ハロー、あなたのお友達から着信です(Hello,the party you have dialed)」)
c.メロディ音、ジングル音、チャイム
d.音楽または発話を含む呼び出し音(たとえば、「電話がつながるまでそのままお待ちください(Please hold while your call is completed)」)
e.コールスクリーナ
f.プライバシーマネージャ(「あなたがおかけになった番号には、勧誘は認められておりません(You have reached a number that does not accept solicitations)」)
g.双方向音声応答(IVR)プロンプト
これらは、本明細書においてまとめて「ネットワークメッセージ」と称される。すべてのそのようなネットワークメッセージは、複数の着呼者に行われる通話呼に関する特定の状況においてネットワークによって同じオーディオが使用されるという共通の特質を共有する。それゆえ、ダイヤルプログラムは将来においてこれらのネットワークメッセージを受けると予測すべきであり、それらをそのようなものとして識別することは、コールプログレス分析ソフトウェアが、生身の発話者に電話がつながっていないと判定する助けとなる。コールプログレス分析ソフトウェアが以下の特性を呈することが所望される。
2.高速である(待ち時間および遅延が短い)
3.ロバストである(検出漏れの割合が低い)
4.正確である(誤検出の割合が低い)
5.スケーラブルである(探索コストが低い)
6.反復可能である(学習曲線が低い)
フレーム持続時間:30ミリ秒
刻み幅:20ミリ秒
重なり:1/3
FFTサイズ:256
F(n,m)は、指紋フレームnの第mのビットである。
フレーム持続時間:370ミリ秒
刻み幅:10ミリ秒
重なり:31/32
FFTサイズ:2048
・X個すべての2値ビットマップにおいてビットが1である場合、3値ビットマップ内のそのビットを1に設定する
・それ以外の場合、3値ビットマップのそのビットを*(「Don’t Care」)に設定する。
2)要素が、複数の圧縮表現の第2の所定数内の第2の所定閾値を上回る場合、相関係数を第2の値に設定する。
3)それ以外の場合、相関係数を第3の値に設定する。
Claims (13)
- 発信電話呼から候補オーディオセグメントを識別するための方法であって、
a)前記候補オーディオセグメントのスペクトログラムを作成するステップと、
b)前記スペクトログラムの候補2値音響指紋ビットマップを作成するステップと、
c)前記候補2値音響指紋ビットマップを、既知のネットワークメッセージの少なくとも1つの既知の2値音響指紋ビットマップと比較するステップと、
d)前記候補2値音響指紋ビットマップが所定閾値内で前記少なくとも1つの既知の2値音響指紋ビットマップのうちの1つに一致する場合、一致を宣言するステップと、
e)前記候補2値音響指紋ビットマップが前記所定閾値内で前記少なくとも1つの既知の2値音響指紋ビットマップのうちの1つに一致しない場合、前記候補オーディオセグメントを分析するために留守番電話検出アルゴリズムを使用するステップと
を含む、方法。 - ステップ(a)は、離散フーリエ変換、離散コサイン変換、ウェーブレット変換、およびフィルタバンクから成る群から選択される変換を使用して前記候補オーディオセグメントを変換するステップを含む、請求項1に記載の方法。
- ステップ(c)は、前記候補2値音響指紋ビットマップと前記少なくとも1つの既知の2値音響指紋ビットマップとの間のハミング距離を計算するステップを含む、請求項1に記載の方法。
- 前記所定閾値はビット誤り率である、請求項1に記載の方法。
- 発信電話呼から候補オーディオセグメントを識別するための方法であって、
a)前記候補オーディオセグメントのスペクトログラムを作成するステップと、
b)前記スペクトログラムの候補2値指紋ビットマップを作成するステップと、
c)前記候補2値指紋ビットマップを、既知の記録の少なくとも1つの既知の2値指紋ビットマップと比較するステップと、
d)前記候補2値指紋ビットマップが所定閾値内で前記少なくとも1つの既知の2値指紋ビットマップのうちの1つに一致する場合、一致を宣言するステップと、
e)前記候補2値指紋ビットマップが前記所定閾値内で前記少なくとも1つの既知の2値指紋ビットマップのうちの1つに一致しない場合、前記候補オーディオセグメントを分析するために代替のプロセスを使用するステップと
を含む、方法。 - 前記候補2値指紋ビットマップおよび前記既知の2値指紋ビットマップは各々、音響指紋ビットマップを含む、請求項6に記載の方法。
- 前記記録はネットワークメッセージを含む、請求項6に記載の方法。
- 前記代替のプロセスは、留守番電話検出アルゴリズム、音声区間検出アルゴリズム、および呼進行分析アルゴリズムから成る群から選択されるプロセスを含む、請求項6に記載の方法。
- ステップ(a)は、離散フーリエ変換、離散コサイン変換、ウェーブレット変換、およびフィルタバンクから成る群から選択される変換を使用して前記候補オーディオセグメントを変換するステップを含む、請求項6に記載の方法。
- ステップ(c)は、前記候補2値指紋ビットマップと前記少なくとも1つの既知の2値指紋ビットマップとの間のハミング距離を計算するステップを含む、請求項6に記載の方法。
- 前記所定閾値はビット誤り率である、請求項6に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US13/432,838 US8681950B2 (en) | 2012-03-28 | 2012-03-28 | System and method for fingerprinting datasets |
US13/432,838 | 2012-03-28 | ||
PCT/US2013/028788 WO2013148069A1 (en) | 2012-03-28 | 2013-03-04 | System and method for fingerprinting datasets |
Related Child Applications (1)
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JP2017138010A Division JP6535706B2 (ja) | 2012-03-28 | 2017-07-14 | データセットの3値ビットマップを作成するための方法 |
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JP2015515646A JP2015515646A (ja) | 2015-05-28 |
JP6178840B2 true JP6178840B2 (ja) | 2017-08-09 |
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JP2015503224A Active JP6178840B2 (ja) | 2012-03-28 | 2013-03-04 | オーディオセグメントを識別するための方法 |
JP2017138010A Active JP6535706B2 (ja) | 2012-03-28 | 2017-07-14 | データセットの3値ビットマップを作成するための方法 |
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JP2017138010A Active JP6535706B2 (ja) | 2012-03-28 | 2017-07-14 | データセットの3値ビットマップを作成するための方法 |
Country Status (11)
Country | Link |
---|---|
US (4) | US8681950B2 (ja) |
EP (3) | EP3076554B1 (ja) |
JP (2) | JP6178840B2 (ja) |
AU (3) | AU2013240453B2 (ja) |
BR (1) | BR112014023865B1 (ja) |
CA (1) | CA2866347C (ja) |
CL (3) | CL2014002551A1 (ja) |
HK (1) | HK1202734A1 (ja) |
NZ (2) | NZ629522A (ja) |
WO (1) | WO2013148069A1 (ja) |
ZA (1) | ZA201406474B (ja) |
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