SpeechRecognitionAlternative

この翻訳は不完全です。英語から この記事を翻訳 してください。

これは実験的な機能です。本番で使用する前にブラウザー実装状況をチェックしてください。

SpeechRecognitionAlternativeは、Web Speech APIのインターフェースです。speech recognition serviceにより認識された単一の言葉を表します

プロパティ

SpeechRecognitionAlternative.transcript 読取専用
Returns a string containing the transcript of the recognised word.
SpeechRecognitionAlternative.confidence 読取専用
Returns a numeric estimate of how confident the speech recognition system is that the recognition is correct.

Examples

This code is excerpted from our Speech color changer example.

recognition.onresult = function(event) {
  // The SpeechRecognitionEvent results property returns a SpeechRecognitionResultList object
  // The SpeechRecognitionResultList object contains SpeechRecognitionResult objects.
  // It has a getter so it can be accessed like an array
  // The first [0] returns the SpeechRecognitionResult at position 0.
  // Each SpeechRecognitionResult object contains SpeechRecognitionAlternative objects that contain individual results.
  // These also have getters so they can be accessed like arrays.
  // The second [0] returns the SpeechRecognitionAlternative at position 0.
  // We then return the transcript property of the SpeechRecognitionAlternative object
  var color = event.results[0][0].transcript;
  diagnostic.textContent = 'Result received: ' + color + '.';
  bg.style.backgroundColor = color;
}

策定状況

Specification Status Comment
Web Speech API
SpeechRecognitionAlternative の定義
ドラフト  

ブラウザ対応状況

現在、互換性データを可読形式の JSON フォーマットに置き換えているところです。 この互換性一覧は古い形式を使っており、これに含まれるデータの置き換えが済んでいません。 手助けしていただける場合は、こちらから!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 33 [1] 44 (44) [2] 未サポート 未サポート 未サポート
Feature Android Chrome Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support ? (有)[1] ? 2.5 未サポート 未サポート 未サポート
  • [1] Speech recognition interfaces are currently prefixed on Chrome, so you'll need to prefix interface names appropriately, e.g. webkitSpeechRecognition; You'll also need to serve your code through a web server for recognition to work.
  • [2] Can be enabled via the media.webspeech.recognition.enable flag in about:config, although note that currently speech recognition won't work on Desktop Firefox — it will be properly exposed soon, once the required internal permissions are sorted out.

Firefox OS permissions

To use speech recognition in an app, you need to specify the following permissions in your manifest:

"permissions": {
  "audio-capture" : {
    "description" : "Audio capture"
  },
  "speech-recognition" : {
    "description" : "Speech recognition"
  }
}

You also need a privileged app, so you need to include this as well:

  "type": "privileged"

関連項目

ドキュメントのタグと貢献者

このページの貢献者: kawakami
最終更新者: kawakami,