我使用Web Speech API在我的网页上捕获语音命令,但识别器在一段时间后结束(它会停止侦听并触发最后一个事件)。Chrome的webkitSpeechRecognition随机结束
为什么会发生这种情况?我可以预防它吗?
这是所有需要声音识别页面(40行)并重现错误的代码。当识别器停止收听时,它会提醒“结束”。
<h1>Voice Recognizer</h1>
<script>
if (!('webkitSpeechRecognition' in window)) {
alert('Your browser does not support speech recognition.');
} else {
var recognition = new webkitSpeechRecognition();
recognition.continuous = true;
recognition.interimResults = true;
recognition.onstart = function() {
console.log('started');
}
recognition.onresult = function() {
interim_transcript = '';
for (var i = event.resultIndex; i < event.results.length; ++i) {
if (event.results[i].isFinal) {
final_transcript += event.results[i][0].transcript;
} else {
interim_transcript += event.results[i][0].transcript;
}
}
console.log('interim result:', interim_transcript);
console.log('final reuslt:', final_transcript);
}
recognition.onerror = function() { alert('error'); }
recognition.onend = function() { alert('end'); }
function startListening(e){
final_transcript = '';
recognition.start();
}
startListening();
}
</script>