VibeVoice: A Frontier Open-Source Text-to-Speech Model

This is clearly high quality but there's something about the voices, the male voices in particular, which immediately register as computer generated. My audio vocabulary is not rich enough to articulate what it is.

After hearing them myself, I think I know what you mean. The voices get a bit warbly and sound at times like they are very mp3-compressed.

I'm no audio engineer either, but those computer voice sound "saw-tooth"y to me.

From what I understand, it's more basic models/techniques that are undersampling, so there is a series of audio pulses which give it that buzzy quality. Better models are produced smoother output.

https://www.perfectcircuit.com/signal/difference-between-wav...

I would describe it as blockly, as if we visualise the sound wave it seems to be without peaks and cut upwards and downwards producing a metallic boxy echo.

Yeah it sounds super low bitrate to me, reminds me of someone on Bluetooth microphone