In High Churches, the pulpit was called the "anbo." Above the anbo was
the "sound board,' not "sounding board" although some people may have
later used that term. A very famous example of an anbo with soundboard
is found in St. Columbo Church in Edinburgh, Scotland. "Canopy" was a
term that came later in time. I believe that St. Peter's Bascillica in
Rome had a sound board over its anbo, but it was moved to over the
altar. Ely Cathedral in Ely, England, has fine examples of both ancient
and modern sound boards. I hope this helps. Let me know if you need
more information.