Hello i really need some help with my A level project

[mattyeovil]

Hello, please can some1 help me with my A level course work. im tring to design a light to sound display picking up the out put signal from a CD player. ive decided that i am going to have 3 active bandpass filters picking up diffent frequencies and lighting specific lights but i am stuck on how to do it. can anyone help?

 

[mattyeovil]

:lol:

 

[Ali Sajjad]

You are going right.. three band pass filters.. amplifier and then the light driving circuits.. wat else.. Do yu need the circuits???


- Ali Sajjad

 

[mattyeovil]

If u have any that would be great. i cant seem to find any thing to base my project on on the internet. i've also looked though the electronics magazines at college. Anything would help

 

[Russlk]

Here is a bandpass filter, 1kHz center frequency, 10% bandwidth. To change the frequency, same % bandwidth, just change the resistors in the same ratio as the frequency. (The bottom of the 802 resistor got clipped, it goes to ground)

 

[vaineo]

i cant seem to find any thing to base my project on on the internet. i've also looked though the electronics magazines at college. Anything would help

have you searched for a color organ.

 

[mattyeovil]

thanks for that i found some :lol:

 

[mattyeovil]

has anyone got any more designs which they could post up?