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by wentw0rth 2 days ago
> There should exist frequencies impossible to reach for anyone but post-pubescent men.... Of course that would make it teen-age verification at best.

Yes and no. Like geology, the more you dig into audio, the more is uncovered and available.

A child/teen with a deep voice has very unique perturbations that don't exist in other cohorts across feature sets. Adults may share some characteristics, but not at the levels found in specific age groups.