My understanding is that while a number of people have tried, we currently have no particularly viable approaches for 'style transfer' analogues on sequence dat

My understanding is that while a number of people have tried, we currently have no particularly viable approaches for 'style transfer' analogues on sequence data, including text and sound/speech. Samples from past work are pretty bad. But what you could possibly do is roundtrip audio to text and then text (with conditioning like speaker metadata) to speech, both of which are doable. But directly transforming, not yet.