By Daily Mail Reporter PUBLISHED: 19:34 EST, 15 July 2013 | UPDATED: 02:03 EST, 16 July 2013 Speak up! Viewers said they missed out on some of the plot because they couldn't hear the speech in drama Parade's End starring Benedict Cumberbatch Mumbling actors have been told to speak clearly after viewers complained the dialogue in many TV shows was inaudible, BBC chief Tony Hall admitted yesterday. Several recent BBC dramas have been criticised for poor diction and muttered lines, while other programmes had to be re-edited to make background music quieter. Responding to the criticism in the Radio Times, Lord Hall, 62, said: ‘I don’t want to sound like a grumpy old man, but I think muttering is something we could have a look at.
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BBC chief Lord Tony Hall said there had been a rise in complaints about poor diction and muttered lines
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Viewers missed out on speech by actor Eddie Redmayne, who is said to have mumbled through his part in Birdsong
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Programmes have had to be re-edited to make background music quieter
Mumbled: Eddie Redmayne (right) was criticised for mumbling his prose in the Beeb's adaptation of @placeholder