add openai api to the tts tutorial

Author: x4nth055

machine-learning/text-to-speech/README.md

@@ -2,4 +2,5 @@
 - `pip3 install -r requirements.txt`
 - To convert text to speech online using Google API, use `tts_google.py`
 - To use offline engines in your platform, consider using `tts_pyttsx3.py`
+- To use the OpenAI API, use `tts_openai.py`
 - To use transformers, use `tts_transformers.py`

machine-learning/text-to-speech/requirements.txt

@@ -4,4 +4,5 @@ playsound
 soundfile
 transformers
 datasets
-sentencepiece
+sentencepiece
+openai

machine-learning/text-to-speech/tts_openai.py

@@ -0,0 +1,20 @@
+from openai import OpenAI
+
+# initialize the OpenAI API client
+api_key = "YOUR_OPENAI_API_KEY"
+client = OpenAI(api_key=api_key)
+
+# sample text to generate speech from
+text = """In his miracle year, he published four groundbreaking papers. 
+These outlined the theory of the photoelectric effect, explained Brownian motion, 
+introduced special relativity, and demonstrated mass-energy equivalence."""
+
+# generate speech from the text
+response = client.audio.speech.create(
+    model="tts-1", # the model to use, there is tts-1 and tts-1-hd
+    voice="nova", # the voice to use, there is alloy, echo, fable, onyx, nova, and shimmer
+    input=text, # the text to generate speech from
+    speed=1.0, # the speed of the generated speech, ranging from 0.25 to 4.0
+)
+# save the generated speech to a file
+response.stream_to_file("openai-output.mp3")