Google's talking AI sounds human
 

Robots of the future will sound like us

The concept of a robot which sounds artificial is enshrined in science fiction, but the reality will probably be robots who sound more like humans.



A research paper published by Google this month - details a text-to-speech system called Tacotron 2, which claims near-human accuracy at imitating audio of a person speaking from text.

The system is Google's second official generation of the technology, which consists of two deep neural networks. The first network translates the text into a spectrogram, a visual way to represent audio frequencies over time.

That spectrogram is then fed into WaveNet, a system from Alphabet's AI research lab DeepMind, which reads the chart and generates the corresponding audio elements accordingly.

The Google researchers also demonstrate that Tacotron 2 can handle hard-to-pronounce words and names, as well as alter the way it enunciates based on punctuation. For instance, capitalized words are stressed, as someone would do when indicating that specific word is an important part of a sentence.

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