Patent US 10,679,643

A method, computer readable medium, and system are disclosed for audio captioning. A raw audio waveform including a non-speech sound is received and relevant features are extracted from the raw audio waveform using a recurrent neural network (RNN) acoustic model. A discrete sequence of characters represented in a natural language is generated based on the relevant features, where the discrete sequence of characters comprises a caption that describes the non-speech sound.