equivalent ic

Hello,
Is it necessary that I should use HM 2007 for voice recognition system
How shall I use 8051 for this application...
Pls help me out..

It all depends on what range of words/sounds you want to recognise and whether you need a real-time system or not.
The HM2007 is limited to recognising 40 words each up to 1 sec duration.
If you only needed to distinguish between, say, "go" and "stop" the processing could be relatively simple and handled by an 8051. Handling very large vocabularies, especially in a real-time system, would probably be beyond the capabilities of the 8051.

Really thanks,
And iam gona use only 6 commands.so am I now good with it...iam heading forward for morr suggestions. ... thank you..