CLAP CLAP - Learning Audio Concepts From Natural Language Supervision NELS A Never-Ending Learner of Sounds to hear and understand the Web. NELS NELS hears audio from YouTube in DCASE. NELS NELS improves hearing with unlabeled audio. NELS NELS allows searching indexed audio using audio or text queries. NELS NELS limitations categorizing and describing sounds. NELS NELS draws domain knowledge from Psychology to enhance the quality of expression of acoustic phenomena.