"FMEE" wrote in message <firstname.lastname@example.org>... > I've got a matlab code for speech recognition using LPC coefficients and neural networks . I'm using MATLAB to recognize five sound commands : GO,RIGHT,LEFT RIGHT and BACK . Those commands used to control a mobile robot. When Igive a wave sound as NN input the result is very nice, but the problem when I record the command immediately and feed it to the network it can't recognize the command well. So can anyone help me please. thank you very very much. > Thank you for your reply.
The NN should recognize sounds sufficiently similar to the ones with which it was trained.
Your I-H-O NN should be an O =5 output classifier with columns of eye(O) as targets and corresponding LPC columns of length I as inputs.
How many input/target training pairs are you using for each class?
Does the input which doesn't work look anything like any of the training inputs?