The best alternatives to Soundpaint are TensorFlow, Ocean beta, and Super Looper. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Ocean lifts the barriers that are often associated with electronic music-making & enable people to enjoy making music, exploring sounds and collaborating with people globally.
Teenage Engineering is a Swedish consumer electronics company and manufacturer founded in 2005 by Jesper Kouthoofd, David Eriksson, Jens Rudberg and David Möllerstedt and based in Stockholm.