help on making a voice controlled robot

[maxpayneromit]

hi, i am working on a robot with the following features:-
1.It has to recognize its name and say when i call it"aibo" has to flsh a led or do some work.
2.It shold be able to tell the direction of source from which the person called by turning towards the correspoding direction
3.It should be able to recognize speech patterns of different persons.
Say it must only follow the command of the trainer and not anyone else

anyone can give me a basic idea
i am planning to work on 8055 micro
can you plzzzzzzzzzz help with the block or basic working

[bodgy]

Is this a course project? I ask because depending on the requirements and money/time available there is more than one way to skin this cat.

For voice recognition the easiest way to go is to use one of the eihter specialist chips or modules - that'll mean you only have to address the chip and work out a way of accessing the correct data.

1 and 3 seem like the most difficult to implement if you are not able to use one of the voice recognition systems out there - I think Parallax actually have a model, but I haven't checked.

#2 Is easier - perhaps something along the lines of two microphones a certain distance apart - convert the signal from this into a DC voltage - have a minimum voltage threshold = minimum sound level to recognise, then work out an optimum level. If left mic is less than right mic then sound must be coming from somwhere to the right of mic(r) turn robot in that direction until sound is at max level.

A search through many robot forums should bring up different ways of doing this.

Colin