SpeechRecognitionResult.isFinal

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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Experimental: 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互換性一覧表をチェックしてください。

SpeechRecognitionResultインターフェイスの isFinal リードオンリーのプロパティは結果がファイナルかどうかの (Boolean 型) のことです。true の場合は、これは結果を返す最終の時間です。false の場合は、暫定の結果を返し、後々それは更新されます。

構文

var myIsFinal = speechRecognitionResultInstance.isFinal;

返り値

A Boolean.

例

js
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;

  console.log(event.results[0].isFinal);
};

仕様

Specification
Web Speech API
# dom-speechrecognitionresult-isfinal

ブラウザー実装状況

BCD tables only load in the browser

Firefox OS 権限

アプリで音声認識を利用する前に、下記の権限を manifest に追加する必要があります。

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

privileged アプリ権限も必要なので、下記も追加が必要です。

json
  "type": "privileged"

関連情報