add support for soniox speech (#120)

Co-authored-by: eglehelms <e.helms@cognigy.com>

lib/utils/speech-utils.js

@@ -4,9 +4,27 @@ const Polly = require('aws-sdk/clients/polly');
 const AWS = require('aws-sdk');
 const { Deepgram } = require('@deepgram/sdk');
 const sdk = require('microsoft-cognitiveservices-speech-sdk');
+const { SpeechClient } = require('@soniox/soniox-node');
 const bent = require('bent');
 const fs = require('fs');
 
+
+const testSonioxStt = async(logger, credentials) => {
+  const api_key = credentials;
+  const soniox = new SpeechClient(api_key);
+
+  return new Promise(async(resolve, reject) => {
+    try {
+      const result = await soniox.transcribeFileShort('data/test_audio.wav');
+      if (result.words.length > 0) resolve(result);
+      else reject(new Error('no transcript returned'));
+    } catch (error) {
+      logger.info({error}, 'failed to get soniox transcript');
+      reject(error);
+    }
+  });
+};
+
 const testNuanceTts = async(logger, getTtsVoices, credentials) => {
   const voices = await getTtsVoices({vendor: 'nuance', credentials});
   return voices;
@@ -225,5 +243,6 @@ module.exports = {
   testNuanceStt,
   testDeepgramStt,
   testIbmTts,
-  testIbmStt
+  testIbmStt,
+  testSonioxStt
 };