Connect a photoresistor to 3.5mm mono (TS) jack plug

Hi,

I'm a complete rookie at electronics and am in need of some help/direction for a project.

I need to somehow connect a photocell to a 3.5mm mono headphone jack, so that fluctuations in light can be transferred to Hz frequency.

Im not sure of what components I will need in between,or how to connect them. Can you help?
Thanks.

Yes, but tell us what you want to do.

And what type of "photocell" you have. (LDR, photovoltaic, photodiode, phototransistor, etc). Some would need external power, others have a lower output, etc...

I'm connecting the jack to a computer program so that the resistance, converted to Hz, will trigger reactions specified in a frequency range.

I have phototransistors. Are these ideal for my needs?

You will need an external voltage. The change in resistance of the phototransistor will not generate a signal.

This might help.