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Peter points out the release of the Cantarino speech synthesis library for Arduino – demoed above in an endearing rendition of “Daisy”.

An interrupt on the PWM output timer calls a sample generator. This uses a synthesis similar to FOF or granule synthesis – using two sines and a square wave of adjustable pitch and amplitude, synced and enveloped by a pitch of selectable frequency. Phase modulation is added to the pitch, to allow unvoiced phonemes to be uttered.

As the Google code page explains, it’s still a work in progress but sounds rather impressive considering it uses only PWM output from a single pin!

More:

Controlling a speech IC via Arduino

Collin Cunningham

Born, drew a lot, made video, made music on 4-track, then computer, more songwriting, met future wife, went to art school for video major, made websites, toured in a band, worked as web media tech, discovered electronics, taught myself electronics, blogged about DIY electronics, made web videos about electronics and made music for them … and I still do!


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