How does UNIHIKER use Azure speech recognition and speech synthesis

pip install azure.cognitiveservices.speech

import time
import os
from azure.cognitiveservices.speech import  SpeechConfig
​
AZURE_SPEECH_KEY = "" # Fill key 
AZURE_SPEECH_REGION = "" # Enter Location/Region 
​
​
try:
    import azure.cognitiveservices.speech as speechsdk 
except ImportError:
    print("""
    Importing the Speech SDK for Python failed.
    Refer to
    https://docs.microsoft.com/azure/cognitive-services/speech-service/quickstart-python for
    installation instructions.
    """)
    import sys
    sys.exit(1)
​
# Set up the subscription info for the Speech Service:
# Replace with your own subscription key and service region (e.g., "japaneast").
speech_key, service_region = AZURE_SPEECH_KEY, AZURE_SPEECH_REGION
​
def tts(text):
    speech_config = SpeechConfig(subscription=speech_key, region=service_region)
    speech_config.speech_synthesis_language = "en-US" 
    speech_config.speech_synthesis_voice_name ="en-US-JennyNeural"
    # Creates a speech synthesizer for the specified language,
    # using the default speaker as audio output.
    speech_synthesizer = speechsdk.SpeechSynthesizer(speech_config=speech_config)
    # Receives a text from console input and synthesizes it to speaker.
    result = speech_synthesizer.speak_text_async(text).get()
​
def speech_recognize_once_from_mic():
​
    speech_config = speechsdk.SpeechConfig(subscription=speech_key, region=service_region, speech_recognition_language="en-US")
​
    audio_config = speechsdk.audio.AudioConfig(use_default_microphone=True)
    speech_recognizer = speechsdk.SpeechRecognizer(speech_config=speech_config, audio_config=audio_config)
​
    print("Speak into your microphone.")
    speech_recognition_result = speech_recognizer.recognize_once_async().get()
​
    if speech_recognition_result.reason == speechsdk.ResultReason.RecognizedSpeech:
        print("Recognized: {}".format(speech_recognition_result.text))
    elif speech_recognition_result.reason == speechsdk.ResultReason.NoMatch:
        print("No speech could be recognized: {}".format(speech_recognition_result.no_match_details))
    elif speech_recognition_result.reason == speechsdk.ResultReason.Canceled:
        cancellation_details = speech_recognition_result.cancellation_details
        print("Speech Recognition canceled: {}".format(cancellation_details.reason))
        if cancellation_details.reason == speechsdk.CancellationReason.Error:
            print("Error details: {}".format(cancellation_details.error_details))
            print("Did you set the speech resource key and region values?")
​
    tts(speech_recognition_result.text)
​
while True:
    speech_recognize_once_from_mic()