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This is for speech to text, so generating text, not audio. And on a $120-$170 device, this transcribes at 30x real time. The code does run on lower end Rockchip processors, costing ~$30, although only at 10x real time speed.

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Sorry for the confusing phrasing about STT vs TTS. I'm not familiar with cases where you would use something like this 'at the edge' instead of say a laptop. I was thinking maybe some sort of offline setup with a microphone -- but in that case the audio is just real-time. Do you have some use cases in mind?

1/4 of the price for 1/3 of the speed is a good deal! Presumably still faster than faster-whisper on the same hardware?

This enables a true natural language voice interface to any device/appliance that currently has a touch pad or a bunch of buttons. Yes, faster than faster-whisper, but that's really an apples to oranges comparison, because useful-transformers uses the NPU on the Rockchip processors, so it works only on those. Whereas faster-whisper works fast on most/all platforms.

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