Built by Texas Instruments, the Speak & Spell electronic educational toy was the first mass-produced product to use digital signal processing.
First released in 1978, the Speak & Spell pioneered digital signal processing techniques as the first mass-produced consumer product to include speech-synthesis capabilities. Ostensibly an educational tool, the Speak & Spell also served as a fun distraction thanks to its multiple built-in game modes and appealing robotic voice…
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