### Description --- **Audio** **Decode** converts the encoded audio back to uncompressed audio frames. In most cases, audio decoding is the first step of an audio processing pipeline. Using the default audio_decode implementation and writing the pipeline in the simplified way ### Code Example --- ```Python import towhee towhee.glob('./music.mp3') .audio_decode().flaten() ``` ### Factory Constructor --- Create the operator via the following factory method audio_decode.ffmpeg() ### Interface --- An audio decode operator takes an audio file path as input. It decodes the audio back to audio frames. **Args:** **audio** (str): Audio file path. **Return** (generator): An generator over audio frames with type `towhee.types.AudioFrame`.