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In this section, we are going to see how to transcribe audio file to text using the OpenAI Whisper model and then label the audio transcription using the OpenAI large language model (LLM).
Whisper is an open source ASR model developed by OpenAI. It is trained on nearly 700,000 hours of multilingual speech data and is capable of transcribing audio to text in almost 100 different languages. According to OpenAI, Whisper “approaches human level robustness and accuracy on English speech recognition.”
In a recent benchmark study, Whisper was compared to other open source ASR models, such as wav2vec 2.0 and Kaldi. The study found that Whisper performed better than wav2vec 2.0 in terms of accuracy and speed across five different use cases, including conversational AI, phone calls, meetings, videos, and earnings calls.