AIs and robots should sound robotic to ensure their future role as tools rather than as people, according to IEEE Spectrum.
Moreover, a universal method is required to identify AI in any context and characterised by any length of speech, which is easily achieved through the use of a ring modulator.
This tool adds a robotic overlay to audio, does not affect the clarity of the voice, and is simple to implement in real-time systems, with a potential frequency range of 30-80Hz and amplitude of 20% being suitable for most cases.
The authors also suggested that using AI to mimic human speech will not be a hindrance to its success, as the industry is already accustomed to robotic voices in everyday technologies such as Alexa and Siri.