Animatronic hardware for driving servos synchronous to sound

How to - hardware setup for driving servo mechanics according to music or speech. As a sample the 3D printable and adjustable eye mechanics is used. But this hardware and the relating software is by far not limited to that. Everytime you want to move servos synchronous to sound, the hardware and the bechele open source animatronic software is right. see also https://bechele.de