measure frequency,ampititude from sound(urgent)

Hi Friends,

i just need to measure the frequency and ampitude from sound..

in my pro i create a sine wave(i set freq 1000hz,amptitude200) and i passed that wave sound to my pc thru microphone,here i need to receive the sound to my program and the same time i need to dispaly the frequency,amptitude(1000hz,200) in my program..so i need to measure freq,and amptitude from the incoming sound..using directx i can record the sound as wav file but can't gte freq and amptitude...

if u have anyidea plslet me know..

i am really in deadline..

waiitng for your valable reply...

thanks in advance..

with regards,
krish

Jan 3 '07 #1

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2672

Killer42

8,435

Expert 8TB

Here are a few links which might be some help.

Jan 4 '07 #2

hazzainuk

http://www.elecdesign.com/Files/29/6264/Figure_02.gif
http://www.elecdesign.com/Articles/ArticleID/6264/6264.html

These two articles look like they could really help. Although they're written for electronic engineers the overall idea could be programmatically accomplished in a similar way.

Out of interest what is it for?

Jan 4 '07 #3

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