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> The snippets of conversation during Pichai’s demo, which can be heard in this clip, seem too polished and unrealistic to be real. Reminder that Duplex explic
by muglug 8y ago
> The snippets of conversation during Pichai’s demo, which can be heard in this clip, seem too polished and unrealistic to be real.
Reminder that Duplex explicitly uses Concatenative Text-to-Speech - i.e. they record humans saying phrases, and just play those soundbites back where appropriate. Sort of like a chess AI storing a dictionary of opening moves.
- deleted 8y ago[deleted]
- avinium 8y agoReally? I hadn’t read that, I just assumed it was based on Tacotron/WaveNet.
- FelipeCortez 8y agoI believe most concatenative TTS systems nowadays are diphone/phone based, rather than playing back full phrases. But being phrase-based could explain how good the demos sound
- PeterisP 8y agoIf you want to be able to say arbitrary text, then you pretty much have to go lower than word level, because the number of different words is effectively unbounded. However, if you're speaking a controlled language where there are clear limits to what the system would ever want to say, then there's no problem to record enough high quality words or whole phrases to concatenate them into something nice sounding.