Sec.  1.357   Mechanical reproductions as evidence.

   Unless offered for the sole purpose of attempting to prove or demonstrate
   sound effect, mechanical or physical reproductions of sound waves shall not
   be admitted in evidence. Any party desiring to offer any matter alleged to
   be contained therein or thereupon shall have such matter typewritten on
   paper of the size prescribed by  Sec. 1.49, and the same shall be identified and
   offered in duplicate in the same manner as other exhibits.