Voice Record sensor??

Hey everybody
I want to set up a system that record the sound of breath and helps me to measure the speed of breath. also in this way help me detect the rem sleep time while sleeping. Which sensor should I use for voice recording?
Is there anyone who can help me?

gulecnu:
Hey everybody
I want to set up a system that record the sound of breath and helps me to measure the speed of breath. also in this way help me detect the rem sleep time while sleeping. Which sensor should I use for voice recording?
Is there anyone who can help me?

Your question is a bit confusing. Do you want to measure speed of breathing or do you want to record someone's voice?

Paul

For recording sound: use a microphone and dedicated sound recording hardware.
For the air flow: a flow sensor - one that can handle the typical flow of breath, and is not disturbing the sleeping subject. That's going to be tricky. An Arduino may be useful for reading this one.