My microphone has a little manual book (Rode NT-USB) and it displays these as it's descriptions-
frequency range- 20Hz ~ 20khz
dynamic range- 96db
maximum SPL- 110dB SPL
is there anyway I could use this as an advantage for mic bleed or noise reduction (by using the numbers above and applying
it to different effects?)
and also overall how do I cut out the frequencies of my laptop and make my mic sound normal?
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Those are typical microphone specifications - there's no information there that you can use in Audition - or any other software, come to that - at all. They represent the performance limits of the device, but do not relate to what happens in actual use. What the microphone produces as a signal at any given time depends entirely upon the environment it's in and how you've set it up.
And it's a Rode you've got. By default it sounds normal. What may not be normal are the conditions you are using it in - like next to your laptop, for instance. Any frequencies you cut out will be within the speech range, so if you cut those out, you will be making it sound less normal, not more. What you need to do is set it up so that the laptop isn't so near it, and try to get as much of the sound of your room out of it too; bare walls and large windows generally sound 'roomy', and once that's in your recording, you can't get it out at all - it's become a part of the sound.