JP2017016131A - 音声認識装置及び方法と電子装置 - Google Patents
音声認識装置及び方法と電子装置 Download PDFInfo
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- G10L2015/025—Phonemes, fenemes or fenones being the recognition units
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- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/226—Procedures used during a speech recognition process, e.g. man-machine dialogue using non-speech characteristics
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Abstract
Description
(式1)において、xは、入力音声信号を示し、yは、音響モデルを用いて音声フレームkに対して計算された音素別の確率を示し、zは、音声フレームkに対する正答を示す。
(式2)
110、210:確率計算部
120、230:候補セット抽出部
130、240:結果返還部
140、250:認識対象リスト
220:シーケンス獲得部
500:電子装置
510:音声受信部
520:音声認識部
530:処理部
Claims (26)
- 音響モデルを用いて音声信号の音素確率を計算する確率計算部と、
対象シーケンスの認識対象リストから候補セットを抽出する候補セット抽出部と、
前記計算された音素確率に基づいて、前記抽出された候補セットから認識結果を返還する結果返還部と、
を含む音声認識装置。 - 前記音響モデルは、CTCを含む学習アルゴリズムを用いて学習される請求項1に記載の音声認識装置。
- 前記結果返還部は、
前記計算された音素確率に基づいて、前記候補セットに含まれた各候補対象シーケンスの生成確率を計算し、前記計算された生成確率が最も高い候補対象シーケンスを前記認識結果として返還する請求項1又は2に記載の音声認識装置。 - 前記計算された音素確率に基づいて音素シーケンスを獲得するシーケンス獲得部をさらに含む請求項1乃至3のいずれか一項に記載の音声認識装置。
- 前記候補セット抽出部は、
前記獲得された音素シーケンスと前記認識対象リストの各対象シーケンスとの間の類似度を計算し、前記計算された類似度に基づいて前記候補セットを抽出する請求項4に記載の音声認識装置。 - 前記候補セット抽出部は、
編集距離アルゴリズムを含む類似度アルゴリズムを用いて前記類似度を計算する請求項5に記載の音声認識装置。 - 前記シーケンス獲得部は、
最適経路解釈アルゴリズムまたは先行経路解釈アルゴリズムを用いて、前記計算された音素確率に基づいて前記音素シーケンスを獲得する請求項4に記載の音声認識装置。 - 音響モデルを用いて音声信号の音素確率を計算する段階と、
対象シーケンスの認識対象リストから候補セットを抽出する段階と、
前記計算された音素確率に基づいて、前記抽出された候補セットから認識結果を返還する段階と、
を含む音声認識方法。 - 前記音響モデルは、CTCを含む学習アルゴリズムを用いて学習される請求項8に記載の音声認識方法。
- 前記認識結果を返還する段階は、
前記計算された音素確率に基づいて、前記候補セットに含まれた各候補対象シーケンスの生成確率を計算する段階を含み、前記計算された生成確率が最も高い候補対象シーケンスを前記認識結果として返還する請求項8又は9に記載の音声認識方法。 - 前記計算された音素確率に基づいて音素シーケンスを獲得する段階をさらに含む請求項8乃至10のいずれか一項に記載の音声認識方法。
- 前記候補セットを抽出する段階は、
前記獲得された音素シーケンスと前記認識対象リストの各対象シーケンスとの間の類似度を計算する段階を含み、前記計算された類似度に基づいて前記候補セットを抽出する請求項11に記載の音声認識方法。 - 前記類似度を計算する段階は、
編集距離アルゴリズムを含む類似度アルゴリズムを用いて前記類似度を計算する請求項12に記載の音声認識方法。 - 前記音素シーケンスを獲得する段階は、
最適経路解釈アルゴリズムまたは先行経路解釈アルゴリズムを用いて、前記計算された音素確率に基づいて前記音素シーケンスを獲得する請求項11乃至13のいずれか一項に記載の音声認識方法。 - ユーザの音声信号を受信する音声受信部と、
音響モデルを用いて前記受信された音声信号の音素確率を計算し、前記計算された音素確率に基づいて認識対象リストに含まれた対象シーケンスのうちの何れか1つを認識結果として返還する音声認識部と、
前記返還された認識結果に基づいて所定の動作を行う処理部と、
を含む電子装置。 - 前記音声認識部は、
前記認識対象リストから候補セットを抽出し、前記計算された音素別の確率に基づいて、前記候補セットに含まれた各候補対象シーケンスの生成確率を計算し、前記計算された生成確率が最も大きな候補対象シーケンスを前記認識結果として返還する請求項15に記載の電子装置。 - 前記音声認識部は、
前記音素確率を解釈して音素シーケンスを獲得し、前記獲得された音素シーケンスと前記認識対象リストの各対象シーケンスとの間の類似度に基づいて前記候補セットを抽出する請求項16に記載の電子装置。 - 前記処理部は、
前記認識結果をスピーカーを通じて音声信号として出力するか、ディスプレイによってテキスト形式で出力する請求項15乃至17のいずれか一項に記載の電子装置。 - 前記処理部は、
前記認識結果を他の言語に翻訳し、翻訳結果をスピーカーを通じて音声信号として出力するか、ディスプレイによってテキスト形式で出力する請求項15乃至18のいずれか一項に記載の電子装置。 - 前記処理部は、
前記認識結果に対応する電源オン/オフ命令語、ボリューム調節命令語、チャネル変更命令語、及び目的地検索命令語のうちの1つ以上を含む命令語を処理する請求項15乃至19のいずれか一項に記載の電子装置。 - 音声信号の一部が音声単位に対応する確率を計算する段階と、
音声単位のシーケンスリストから音声単位の候補シーケンスセットを獲得する段階と、
前記確率に基づいて音声信号に対応する音声単位の候補シーケンスのうち何れか1つを認識する段階と、
を含む音声認識方法。 - 前記確率を計算する段階は、音響モデルを用いて確率を計算する請求項21に記載の音声認識方法。
- 前記音声単位は、音素である請求項21又は22に記載の音声認識方法。
- 前記音声単位の候補シーケンスは、文章である請求項21乃至23のいずれか一項に記載の音声認識方法。
- 前記文章は、電子装置を制御する命令語である請求項24に記載の音声認識方法。
- 前記音声単位の候補シーケンスのうち何れか1つを認識する段階は、
前記音声信号の一部が音声単位に対応する確率に基づいて音声単位の各候補シーケンスを生成する確率を計算する段階と、
音声単位の候補シーケンスのうち、音声信号に対応する音声単位の各候補シーケンスを生成する確率のうちから最も高い確率を有する何れか1つを認識する段階と、
を含む請求項21乃至25のいずれか一項に記載の音声認識方法。
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WO2017213055A1 (ja) * | 2016-06-09 | 2017-12-14 | 国立研究開発法人情報通信研究機構 | 音声認識装置及びコンピュータプログラム |
US10909976B2 (en) | 2016-06-09 | 2021-02-02 | National Institute Of Information And Communications Technology | Speech recognition device and computer program |
CN110503956A (zh) * | 2019-09-17 | 2019-11-26 | 平安科技(深圳)有限公司 | 语音识别方法、装置、介质及电子设备 |
WO2021051564A1 (zh) * | 2019-09-17 | 2021-03-25 | 平安科技(深圳)有限公司 | 语音识别方法、装置、计算设备和存储介质 |
CN110503956B (zh) * | 2019-09-17 | 2023-05-12 | 平安科技(深圳)有限公司 | 语音识别方法、装置、介质及电子设备 |
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JP6637848B2 (ja) | 2020-01-29 |
CN106328127B (zh) | 2021-12-28 |
KR102371188B1 (ko) | 2022-03-04 |
EP3113176A1 (en) | 2017-01-04 |
US20170004824A1 (en) | 2017-01-05 |
KR20170003246A (ko) | 2017-01-09 |
US20210272551A1 (en) | 2021-09-02 |
CN106328127A (zh) | 2017-01-11 |
EP3113176B1 (en) | 2019-04-03 |
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