An organ stop mimicking the human voice has existed since the 1500s

Evidence

The vox humana is designed to have characteristics of the human voice. Of course, it uses a reed. One of the oldest organ stops, it has been around since the 1500s. … The formants have been set in the past by many creative shapes of the pipe, determined empirically, no doubt. — Eric J. Heller, Why You Hear What You Hear- An…, 1732

Categorization

• CANDY: A 500-year-old organ pipe built to sound like a human voice is a fun, tweetable fact.