Speech threshold | AssemblyAI

Supported languages

Speech threshold is supported for all languages

To only transcribe files that contain at least a specified percentage of spoken audio, you can set the speech_threshold parameter. You can pass any value between 0 and 1.

If the percentage of speech in the audio file is below the provided threshold, the value of text is None and the response contains an error message:

1 Audio speech threshold 0.9461 is below the requested speech threshold value 1.0

1 import assemblyai as aai
2 
3 aai.settings.api_key = "<YOUR_API_KEY>"
4 
5 # audio_file = "./local_file.mp3"
6 audio_file = "https://assembly.ai/wildfires.mp3"
7 
8 config = aai.TranscriptionConfig(speech_threshold=0.5)
9 
10 transcript = aai.Transcriber(config=config).transcribe(audio_file)
11 
12 if transcript.status == "error":
13   raise RuntimeError(f"Transcription failed: {transcript.error}")
14 
15 print(transcript.text)