function onVoiceMessage(msg){
var chatId = msg.chat.id;
bot.getFileLink(msg.voice.file_id).then(function(link){
//setup new recognizer stream
var recognizeStream = speech_to_text.createRecognizeStream(params);
recognizeStream.setEncoding('utf8');
recognizeStream.on('results', function(data){
if(data && data.results && data.results.length>0 && data.results[0].alternatives && data.results[0].alternatives.length>0){
var result = data.results[0].alternatives[0].transcript;
console.log("result: ", result);
//send speech recognizer result back to chat
bot.sendMessage(chatId, result, {
disable_notification: true,
reply_to_message_id: msg.message_id
}).then(function () {
// reply sent!
});
}
});
['data', 'error', 'connection-close'].forEach(function(eventName){
recognizeStream.on(eventName, console.log.bind(console, eventName + ' event: '));
});
//pipe voice message to recognizer -> send to watson
requests(link).pipe(recognizeStream);
});
}
function getFileLink(resp) {
return this.bot.getFileLink(resp.file_id)
}