JP2011527030A - 並列認識タスクを用いた音声認識 - Google Patents
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- G10L15/00—Speech recognition
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- G—PHYSICS
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
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- G10L15/00—Speech recognition
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- G10L15/00—Speech recognition
- G10L15/26—Speech to text systems
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- G—PHYSICS
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/28—Constructional details of speech recognition systems
- G10L15/30—Distributed recognition, e.g. in client-server systems, for mobile phones or network applications
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- 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
- G10L15/28—Constructional details of speech recognition systems
- G10L15/34—Adaptation of a single recogniser for parallel processing, e.g. by use of multiple processors or cloud computing
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Abstract
Description
102、206 携帯電話
104、208 音声信号
106 音声対応電話帳情報サーバ
108 音声認識器
110、250 SRS管理モジュール
113、280 最終結果選択モジュール
114 最終的な認識結果
116、264 信頼値
202 音声伝送セグメント
204 音声認識器セグメント
212 電話サーバ
214 ソフトウェアアプリケーションサーバ
252 言語モデル
254 音響モデル
256 音声認識アルゴリズム
258 認識結果モニタ
262 認識結果
266 停止コマンド
268 待ち時間モニタ
270 SRSアボータ
282 SRS相関モニタ
Claims (21)
- コンピュータで実施される方法であって、
音声信号を受け取る段階と、
複数の音声認識システム(SRS)による音声認識タスクを開始する段階と、
各SRSが、前記音声信号に含まれると予想される音声を指定する認識結果と、前記認識結果の正確さの信頼度を示す信頼値とを生成するように構成され、
前記方法は、
1つまたは複数の認識結果、および前記1つまたは複数の認識結果に関する1つまたは複数の信頼値を生成することを含む前記音声認識タスクの一部を完了する段階と、
前記1つまたは複数の信頼値が信頼閾値を満たすかどうかを判定する段階と、
完了していないSRSに関する前記音声認識タスクの残りの部分を停止する段階と、
生成した前記1つまたは複数の認識結果のうちの少なくとも1つに基づいて最終的な認識結果を出力する段階と
を含む方法。 - 音声認識タスクが、前記音声認識タスクの完了のために許可される最大期間を指定する待ち時間閾値を超えた場合、前記音声認識タスクを停止する段階をさらに含む請求項1に記載の方法。
- 完了した音声認識タスクが、生成された認識結果において低い信頼値と関連付けられる場合、未完了の音声認識タスクを停止する段階をさらに含む請求項1に記載の方法。
- 前記SRSのうちの少なくとも1つが複数の認識結果を生成する請求項1に記載の方法。
- 前記複数の認識結果のうちの上位N個の認識結果に関連する信頼値に基づいて、前記上位N個の認識結果を順位付けする段階をさらに含み、Nが任意の正の整数を表す請求項4に記載の方法。
- 異なるSRSによって生成された信頼値に基づいて、前記上位N個の認識結果に関連する信頼値に関する移動平均を求める段階をさらに含む請求項5に記載の方法。
- どの認識結果が最高の全体的信頼値に関連するかに基づいて、前記上位N個の結果から前記最終的な認識結果を選択する段階をさらに含む請求項6に記載の方法。
- どの認識結果が最大の信頼値に関連するかに基づいて前記最終的な認識結果を選択する段階をさらに含む請求項1に記載の方法。
- 前記最終的な認識結果、および前記最終的な認識結果に関連する信頼値を生成するSRSの数に基づいて前記最終的な認識結果を選択する段階をさらに含む請求項1に記載の方法。
- 複数のSRSのうちの1つまたは複数の前記信頼性、および前記認識結果に関連する信頼値についての情報に基づいて、前記最終的な認識結果を選択する段階をさらに含む請求項1に記載の方法。
- 最大時間枠が超過した場合、前記複数のSRSによってすべての音声認識タスクを停止する段階をさらに含む請求項1に記載の方法。
- 発話を繰り返すようにユーザに促す段階をさらに含む請求項11に記載の方法。
- 人間のオペレータが前記音声信号を受けるという要求を送る段階をさらに含む請求項11に記載の方法。
- 正規化目盛上の信頼値の分布に基づいて前記最終的な認識結果を選択する段階をさらに含む請求項1に記載の方法。
- 認識結果が高い信頼値に関連付けられ、かつ他の認識結果のうちの少なくとも一部が低い信頼値の比較的小さい範囲内で互いに集中する場合、前記認識結果を前記最終的な認識結果として選択する段階をさらに含む請求項14に記載の方法。
- 特定の認識結果を生成した前記SRS間の相関に基づいて、前記最終的な認識結果の選択で前記特定の認識結果を重み付けする段階をさらに含む請求項1に記載の方法。
- 前記SRSの少なくとも一部が、異なる言語モデルまたは音響モデルを含む請求項1に記載の方法。
- 前記1つまたは複数の信頼値が信頼閾値を満たす場合、完了していないSRSに関する前記音声認識タスクの残りの部分を停止する段階をさらに含む請求項1に記載の方法。
- 前記最終的な認識結果が不正確であるという指示が受信された場合、前記停止した音声認識タスクの残りの部分を再開する段階をさらに含む請求項18に記載の方法。
- 音声認識タスクを開始して、受け取った音声信号内に符号化された予想される音声を識別する複数の音声認識システムを備えるシステムであって、
各音声認識システム(SRS)が、認識結果と、前記認識結果の正確さの信頼度を示す信頼値とを生成するように構成され、
前記システムが、
認識結果が前記SRSによって生成されたときに前記認識結果を受け取り、生成された前記認識結果に関連する信頼値を受け取る認識管理モジュールを備え、
前記認識管理モジュールは、受け取った前記信頼値のうちの1つまたは複数が信頼閾値を満たす場合、認識結果の生成を完了していないSRSによる未完了の音声認識タスクを停止し、
前記システムが、
生成された前記認識結果の前記信頼値に基づいて選択された最終的な認識結果を送るインターフェースを備えるシステム。 - 受け取った音声信号に関する音声認識タスクを開始する複数の音声認識システムを備えるシステムであって、
各音声認識システム(SRS)が、前記音声信号内の予想される音声を識別する認識結果と、前記認識結果の正確さの信頼度を示す信頼値とを生成するように構成され、
前記システムは、
1つまたは複数の認識結果が前記SRSによって生成されたときに、前記1つまたは複数の認識結果および1つまたは複数の対応する信頼値を各SRSから受け取り、受け取った前記信頼値のうちの1つまたは複数が信頼閾値を満たす場合、認識結果の生成を完了していないSRSによる未完了の音声認識タスクを停止し、生成された前記認識結果の前記信頼値に基づいて最終的な認識結果を選択する手段と、
前記音声信号内の予想される音声を表す最終的な認識結果を送るインターフェースと
を備えるシステム。
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US12/166,822 US8364481B2 (en) | 2008-07-02 | 2008-07-02 | Speech recognition with parallel recognition tasks |
PCT/US2009/049604 WO2010003109A2 (en) | 2008-07-02 | 2009-07-02 | Speech recognition with parallel recognition tasks |
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