6.034 Artificial Intelligence - Recitations, fall 2004 online slides on learning

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NN application - NETtalk

Sejnowski and Rosenburg, 1985

Written English text to English speech

Based on DECtalk expert system

Look a a window of 7 characters:

          T H I S   I S     (A-Z, ",", ".", " ")
	  - - - - - - -
                ^
                |
                |

Decide how to utter middle character

1 network 1 hidden layer 203 input units (7 character window * 29 possible characters) 80 hidden units approximately 30 output units