Secret listening to deliberations of grand or petit jury

It shall be unlawful for any person willfully to overhear, or procure any other person to overhear, or attempt to overhear the investigations and deliberations of, or the taking of votes by, a grand jury or a petit jury in a criminal case, by using any electronic amplifying, transmitting, or recording device, or by any similar or other mechanical or electrical device or arrangement, without the consent or knowledge of said grand jury or petit jury.