speech recognition

I wanted to make speech recognition or control system using PIC 16F877A. can anybody plz tell me how to start this project. any comment or help is appreciated

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en023596

This may be helpful.

but it doesn't supports pic 16F series. it only supports 30F. any other alternatives. if not can u suggest some minor project with pic 16F877A. thanks again

Hi it can be easily done by using HM2007 Ic it is Speech Recognition ic ,try it can be interface with any microcontroller

thanx 4 ur tym man.

can u suggest some cheaper components. its rs 3,000/- per ic.

I'm no expert, but it seems to me it depends on how well it needs to recognize speech. I would make a distinction between "voice recognition" and "command recognition". If all you need is something that will recognize a few words, then the system can be much simpler than one that needs to type a dictated letter (ala Agent Gary Seven).

You might be able to get the HM2007 for a reasonable price, here:
* http://www.imagesco.com/speech/speech-recognition-components.html
* http://talkingelectronics.com/John/SpeechRecognition.html

Or:
* http://www.parallax.com/tabid/768/txtSearch/30016+/List/0/SortField/4/Default.aspx

Otherwise, if all you need is command recognition try this:
* http://www.imagesco.com/kits/speech-recognition-kit.html
* http://www.imagesco.com/speech/speech-recognition-components.html
* www.imagescompany.com/pdf/sri-01.pdf

Or if you don't mind using an Arduino instead:
* https://www.sparkfun.com/products/10963?

Here's more info on the HM2007:

http://www.google.com/url?sa=t&rct=j&q=&esrc=...sg=AFQjCNHITqyL4prKOnd-pcy1vQXFPyMTbQ&cad=rja

thanx buddy