kind of technical English problem

[mas]

I already wrote that I wanna write an essay about transient response of microphone. now I've got a problem because of the term transient response and my bad English.

is the "impulse response" and the "transient response" the same and if not, what's the difference. I found some German studies and I think I have to consider some English ones as well. I'm not sure if it's got a sense to search in English studies if I've already got problems with this technical terms. Acutally after reading some small stuff I think it's the same but tell me if you're already laughing about me because I'm sounding ridiculous

ok mates hopefully you're able to help me.