JP2020166224A - 構音障害の音声明瞭度の改善システム及びその方法 - Google Patents
構音障害の音声明瞭度の改善システム及びその方法 Download PDFInfo
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- G—PHYSICS
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- 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
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- 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
- G10L21/003—Changing voice quality, e.g. pitch or formants
- G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
- G10L21/013—Adapting to target pitch
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Abstract
Description
従来の音声変換システムは、変換モデルの学習を行う前に一般的な音声アライメント技術(例えばDTW、PSLOA等)によって学習用コーパスをアライメントする。それに対して、本発明の構音障害の音声明瞭度の改善システム及びその方法において、従来の音声変換システムの音声アライメント関連技術を構音障害化モジュールに置換することで、変換モデル学習用に用いる同期コーパスを自動に生成でき、音声アライメント技術又は手動方式で学習用コーパスをアライメントさせる必要がなく、大量の時間的コスト及び人的コストを節約するだけでなく、更に学習用コーパスを完全に同期させる。
20 参考コーパス
30 患者コーパス
40 音声アライメント技術(DTW/PSLOA)
100 構音障害の音声明瞭度の改善システム
110 構音障害化モジュール
111 参考コーパス
112 患者コーパス
113 同期コーパス
120 音声変換モデル学習装置
Claims (14)
- 構音障害化モジュール及び音声変換モデル学習装置を備え、
前記構音障害化モジュールは、対応する参考コーパス及び患者コーパスを含む一組のコーパス対を受信して、前記一組のコーパス対を同期コーパスに変換し、
前記音声変換モデル学習装置は、前記参考コーパス及び前記同期コーパスを受信して一組の学習用コーパスとし、前記一組の学習用コーパスを用いて音声変換モデルの学習を行うことを特徴とする、構音障害の音声明瞭度の改善システム。 - 前記構音障害化モジュールは、ガウス混合モデル(GMM)に基づく音声変換システムによって実現させる、請求項1に記載の構音障害の音声明瞭度の改善システム。
- 前記構音障害化モジュールは、ディープニューラルネットワーク(DNN)に基づく音声変換システムによって実現させる、請求項1に記載の構音障害の音声明瞭度の改善システム。
- 前記構音障害化モジュールは、複数の音声の特徴パラメータを抜き出し音声合成技術によって実現させる、請求項1に記載の構音障害の音声明瞭度の改善システム。
- 前記音声の特徴パラメータが、ジッタ(jitter)及びシマー(shimmer)を含む、請求項4に記載の構音障害の音声明瞭度の改善システム。
- 前記音声変換モデル学習装置は、ガウス混合モデル(GMM)に基づく音声変換システムによって実現させる、請求項1に記載の構音障害の音声明瞭度の改善システム。
- 前記音声変換モデル学習装置は、ディープニューラルネットワーク(DNN)に基づく音声変換システムによって実現させる、請求項1に記載の構音障害の音声明瞭度の改善システム。
- 対応する参考コーパス及び患者コーパスを含む一組のコーパス対を提供する工程、
前記一組のコーパス対を同期コーパスに変換する工程、及び
前記参考コーパス及び前記同期コーパスを一組の学習用コーパスとし、前記一組の学習用コーパスを用いて音声変換モデルの学習を行う工程を有する、構音障害の音声明瞭度の改善方法。 - 前記一組のコーパス対を同期コーパスに変換する工程が、ガウス混合モデル(GMM)に基づく音声変換システムによって実現させる、請求項8に記載の構音障害の音声明瞭度の改善方法。
- 前記一組のコーパス対を同期コーパスに変換する工程が、ディープニューラルネットワーク(DNN)に基づく音声変換システムによって実現させる、請求項8に記載の構音障害の音声明瞭度の改善方法。
- 前記一組のコーパス対を同期コーパスに変換する工程が、複数の音声の特徴パラメータを抜き出し音声合成技術によって実現させる、請求項8に記載の構音障害の音声明瞭度の改善方法。
- 前記音声の特徴パラメータが、ジッタ(jitter)及びシマー(shimmer)を含む、請求項11に記載の構音障害の音声明瞭度の改善方法。
- 前記一組の学習用コーパスを用いて音声変換モデルの学習を行う工程が、ガウス混合モデル(GMM)に基づく音声変換システムによって実現させる、請求項8に記載の構音障害の音声明瞭度の改善方法。
- 前記一組の学習用コーパスを用いて音声変換モデルの学習を行う工程が、ディープニューラルネットワーク(DNN)に基づく音声変換システムによって実現させる、請求項8に記載の構音障害の音声明瞭度の改善方法。
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