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Comment by FrustratedMonky | Hacker News Reader

So all text and voices? An AI is doing both sides of conversation, just off the cuff from reading the script?

This is amazing.

Ok, so on further thought I think I can tell that they're AI now. But it's subtle. The pace of the conversation is just a bit too quick for natural human speech. They're talking about history but the female voice especially, is very quick to respond with points as soon as the male voice is finished. It's clear that the AI doesn't factor in the time it takes for someone to think momentarily and formulate a thought.

Funny that it is too smooth, quick, and adding a pause might be more realistic.

But also, some people talk fast.

They'd have to add some random pausing.

It's not so much the speed of the speech itself. The speech sounds natural and there are natural sounding inflections. But the gap between the speakers is almost nonexistent. It's quite exhausting to listen to because your own brain is trying to think about the content but there's no time to do it in parallel with the hosts, since they're not actually thinking.

yea. everything. try it out (point it at a website or something)

Yeah I have a hard time believing this. Even OpenAI's voices don't sound this natural with the pauses in the speech.

It's because oai are going for low latency. I've got pause free working locally by running the tts model after the llm has finished generating a huge chunk of the response.

And fine tuning on 15 minutes of the voice you're targeting makes it sound natural

Maybe because the OpenAI App where you talk to it is responding in Realtime.

But the NotebookLM is like a recorded pod-cast, so it can think about it before laying down a track?

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