Breeezy

I absolutely love the horn sound and how loud it is on my C-maxz. Currently, I’m installing an alarm system on my old civic. I’m wondering if there is anyway I can make the civic alarm system/horn sound like my C-max instead of the aftermarket chirp it has. I don’t know whether or not the C-Max’s sound is based on the horn it-self or an audio file within the ECM. Any help?