voicoding update

@@ -3,6 +3,7 @@ const recorder = require('node-record-lpcm16');
 // Imports the Google Cloud client library
 const speech = require('@google-cloud/speech');
 
+
 // Creates a client
 const client = new speech.SpeechClient();
 
@@ -12,12 +13,40 @@ const client = new speech.SpeechClient();
 const encoding = 'LINEAR16';
 const sampleRateHertz = 16000;
 const languageCode = 'ko-KR';
+const speechContexts = [{
+  phrases: [
+    '$OOV_CLASS_ALPHA_SEQUENCE 는 $OOV_CLASS_ALPHA_SEQUENCE', '$OOV_CLASS_ALPHA_SEQUENCE 는 $OOV_CLASS_DIGIT_SEQUENCE',
+    '$OOV_CLASS_ALPHA_SEQUENCE 는 $OOV_CLASS_ALPHA_SEQUENCE 보다 크다',
+    '$OOV_CLASS_ALPHA_SEQUENCE 는 $OOV_CLASS_ALPHA_SEQUENCE 보다 작다',
+    '$OOV_CLASS_ALPHA_SEQUENCE 는 $OOV_CLASS_DIGIT_SEQUENCE 보다 크다',
+    '$OOV_CLASS_ALPHA_SEQUENCE 는 $OOV_CLASS_DIGIT_SEQUENCE 보다 작다',
+    'for OOV_CLASS_ALPHA_SEQUENCE in range $OOV_CLASS_DIGIT_SEQUENCE',
+    'if',
+    '이프',
+    'else if',
+    '엘스 이프',
+    'else',
+    '엘스',
+    'while',
+    '와일',
+    '함수',
+    '파라미터',
+    'parameter',
+    '변수 선언',
+    '함수 선언',
+    '반복문 선언',
+    '조건문 선언'
+  ],
+  boost: 20
+}]
 
 const request = {
   config: {
     encoding: encoding,
     sampleRateHertz: sampleRateHertz,
-    languageCode: languageCode
+    languageCode: languageCode,
+    alternativeLanguageCodes: ['en-US'],
+    speechContexts: speechContexts
   },
   interimResults: false, // If you want interim results, set this to true
 };