I read something in the metro and have just googled this article...
I saw a new show last night with Simkins who wrote 'The Rules of Acting' who said the actor was not the only factor about producing audio, for example sound systems and ambient noise were factors. A Metro
More on Simkins
So back to the topic and how would the topic affect practice (what type of practice you ask)?
I will work on developing the topic in the next couple of weeks... and blog accordingly.