Help :FM Sound Project

jpenny2k · 1st February 2005, 02:07 PM

Hello, do you guys have any idea on how to do an FM sound project.

here are the requirements:
Modulation: FM
Baseband: 100-500hz Sine Wave
Transmission: Air
Carrier Frequency: 50Khz (Ultrasonic)

I do not know how to start from scratch. Lol

The instructor just wanted us to demo FM transmitting and receiving by any means using the requirements above.

Thanks guys!

DragonMaster · 1st February 2005, 11:06 PM

howstuffworks.com

ESP's(sound.au.com) FM transmitter project, the description page might help.

http://members.tripod.com/~transmitters/links.htm look at the middle of the page.

jpenny2k · 2nd February 2005, 11:06 AM

thanks!

additional help would still be appreciated

paulb · 2nd February 2005, 11:45 AM

Take a look at
http://www.national.com/an/AN/AN-146.pdf
You would have to adapt it and use ultrasonic transducers instead of coupling it to the AC power line, but the FM parts are all there.

1st February 2005, 02:07 PM	#1
jpenny2k diyAudio Member Join Date: Feb 2005 Location: Manila	Help :FM Sound Project Hello, do you guys have any idea on how to do an FM sound project. here are the requirements: Modulation: FM Baseband: 100-500hz Sine Wave Transmission: Air Carrier Frequency: 50Khz (Ultrasonic) I do not know how to start from scratch. Lol The instructor just wanted us to demo FM transmitting and receiving by any means using the requirements above. Thanks guys!

1st February 2005, 11:06 PM	#2
DragonMaster diyAudio Member Join Date: Dec 2003 Location: Montreal	howstuffworks.com ESP's(sound.au.com) FM transmitter project, the description page might help. http://members.tripod.com/~transmitters/links.htm look at the middle of the page. __________________ Antoine http://dmsaudio.ca/

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2nd February 2005, 11:06 AM	#3
jpenny2k diyAudio Member Join Date: Feb 2005 Location: Manila	thanks! additional help would still be appreciated

2nd February 2005, 11:45 AM	#4
paulb diyAudio Member Join Date: Jun 2001 Location: Calgary	Take a look at http://www.national.com/an/AN/AN-146.pdf You would have to adapt it and use ultrasonic transducers instead of coupling it to the AC power line, but the FM parts are all there.

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