JP2009047920A - ユーザと音声により対話する装置および方法 - Google Patents
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Abstract
【解決手段】音声を認識し、応答の候補と、応答の候補の確からしさを表す尤度とを生成する候補生成部112と、最尤の応答の候補を選択の内容を表す語句を含む応答文を生成する応答文生成部113と、応答文の合成音声を出力する出力部102と、合成音声の出力中にユーザが発話した音声に対する認識結果を解析して、応答文に含まれる語句に対応する少なくとも1つの修正語句を生成する修正語句生成部114と、生成された応答の候補から、生成された修正語句と同一の意味内容の語句を含む応答の候補を取得し、取得した応答の候補のうち最尤の応答の候補を選択する選択部115と、選択された応答の候補の内容を表す語句で応答文を更新する更新部116と、を備え、出力部102は、更新後の応答文の合成音声を出力する。
【選択図】 図1
Description
上記実施の形態では、図6に示したような固定のテンプレートにしたがって応答フレーズを生成し、生成した応答フレーズを順次出力していた。
52 ROM
53 RAM
54 通信I/F
61 バス
100 ビデオ録画再生装置
101 受付部
102 出力部
103 録画再生部
110 対話処理部
111 認識部
112 候補生成部
113 応答文生成部
114 修正語句生成部
115 選択部
116 更新部
120 記憶部
131 マイク
132 スピーカ
201〜205 ノード
1101、1102 属性値
Claims (6)
- 入力した音声を認識し、認識結果の候補を複数生成する認識部と、
第1音声に対する複数の第1認識結果の候補を解析して、複数の第1認識結果の候補それぞれに対応する応答の候補と、第1認識結果の候補に対する応答の候補の確からしさを表す尤度とを生成する候補生成部と、
前記尤度が最大となる第1認識結果の第1候補に対する応答の候補を選択し、選択した前記第1認識結果の第1候補に対する応答の候補を表す語句を含む第1認識結果の第1候補に対する応答文を生成する応答文生成部と、
第1認識結果の第1候補に対する応答文を音声信号に変換した合成音声を出力する出力部と、
前記合成音声の出力中に第2音声が入力された場合、前記候補生成部で生成された第2音声に対する第2認識結果の候補を解析して、前記第1認識結果の第1候補に対する応答文に含まれる語句を修正した修正語句を生成する修正語句生成部と、
複数の第1認識結果の候補に対する応答の候補から、前記修正語句と同一の語句を含む第1認識結果の別の候補に対する応答の候補を取得し、第1認識結果の別の候補に対する応答の候補のうち前記尤度が最大の第1認識結果の別の候補に対する応答の候補を選択する選択部と、
選択された第1認識結果の別の候補に対する応答の候補の語句で前記応答文を更新する更新部と、を備え、
前記出力部は、前記応答文が更新された場合、更新前の前記応答文の合成音声に代えて、更新後の前記応答文の合成音声を出力すること、
を特徴とする音声対話装置。 - 前記出力部は、前記応答文が更新された場合、更新前の前記応答文で出力されていない語句に対応する語句から更新後の前記応答文の合成音声を出力すること、
を特徴とする請求項1に記載の音声対話装置。 - 前記出力部は、前記応答文に含まれる語句のうち、更新前の前記応答文で出力済みの語句が、更新された語句のうち最も文頭に近い語句より文末側に含まれる場合に、更新された語句のうち最も文頭に近い語句から更新後の前記応答文の合成音声を出力すること、
を特徴とする請求項2に記載の音声対話装置。 - 前記出力部は、前記応答文に含まれる語句のうち、更新前の前記応答文で出力済みの語句が、更新された語句のうち最も文頭に近い語句より文頭側に含まれる場合に、出力済みの語句の次に文末側に含まれる語句から更新後の前記応答文の合成音声を出力すること、
を特徴とする請求項2に記載の音声対話装置。 - 前記候補生成部は、さらに、前記応答の候補を表す語句ごとの確からしさを表す第2尤度を生成し、
前記応答文生成部は、前記応答の候補を表す語句を、前記第2尤度が小さい順に文頭から含む前記応答文を生成すること、
を特徴とする請求項1に記載の音声対話装置。 - 認識部によって、入力した音声を認識し、認識結果の候補を複数生成する認識ステップと、
候補生成部によって、第1音声に対する複数の第1認識結果の候補を解析して、複数の第1認識結果の候補それぞれに対応する応答の候補と、第1認識結果の候補に対する応答の候補の確からしさを表す尤度とを生成する候補生成ステップと、
応答文生成部によって、前記尤度が最大となる第1認識結果の第1候補に対する応答の候補を選択し、選択した前記第1認識結果の第1候補に対する応答の候補を表す語句を含む第1認識結果の第1候補に対する応答文を生成する応答文生成ステップと、
出力部によって、第1認識結果の第1候補に対する応答文を音声信号に変換した合成音声を出力する第1出力ステップと、
修正語句生成部によって、前記合成音声の出力中に第2音声が入力された場合、前記候補生成ステップで生成された第2音声に対する第2認識結果の候補を解析して、前記第1認識結果の第1候補に対する応答文に含まれる語句を修正した修正語句を生成する修正語句生成ステップと、
選択部によって、複数の第1認識結果の候補に対する応答の候補から、前記修正語句と同一の語句を含む第1認識結果の別の候補に対する応答の候補を取得し、第1認識結果の別の候補に対する応答の候補のうち前記尤度が最大の第1認識結果の別の候補に対する応答の候補を選択する選択ステップと、
更新部によって、選択された第1認識結果の別の候補に対する応答の候補の語句で前記応答文を更新する更新ステップと、を備え、
出力部によって、前記応答文が更新された場合、更新前の前記応答文の合成音声に代えて、更新後の前記応答文の合成音声を出力する第2出力ステップと、
を備えたことを特徴とする音声対話方法。
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