881021 - Audio Recording

[hamidi2]

hi
my ears hear something, my mp3 recorder records something else!
beginning with this title helps me describe my problem tersely. how can i BE in the same place and at the same time as i had been once b4 by recording what i need to hear later?
most mp3 recorder devices can't record sounds and more importantly voices the same as how i hear. this may be because they can't receive the sounds of the environments the same as my hears do. how can i overcome this behavior? what recorder of what company is suitable for me? is there any at all?
for example, i put it on the table while it's recording, just push it a bit elsewhere, and after i open the recorded file i hear lots of hazardous noises loudly.
or, when a fan is on around, something like a gale is recorded while my ears don't hear it at all.
or, i hear the speech properly and may completely understand it, while when i hear to recorded mp3, i have to pay most attention to understand and i've to do my best effort to distinguish between the voice of the spokesman which has got too low in comparison with the environmental noise which i had not heard at all.
many ppl around the world use mp3 recorders. don't they have problem with them?
help me, plz! i need scientific assistance about such phenomena.
thx

[TJohns]

It's not the recorder, it's that wonderful lump of grey stuff between your ears that's making the difference. Your ear "hears" the same thing at the microphone (well, slightly different ... your ears give you a slightly directional stereo pickup) but your brain "filters" out all the irrelevent sounds automatically. And as human speech uses a relatively narrow band of frequencies, it's tuned to pick up those sounds better.

Trevor

[hamidi2]

hi trevor, thanx for ur reply
i agree with u that brain has an essential role in filtering and concentrating on a special sound between many ones in an environment.
i also know that ears "learn" how to hear and filter what they don't need to hear.
but i think this is not all. the problem is that the sounds r not recorded as they're "existing" in the environment. if someone be talking to u in distance of 10cm of ur hears or be in distance of 1m u may listen to both properly, even if the voice loudness be the same in both cases. but in a recorder u "must" put it too close to speaker, otherwise the loudness will be decreases majorly.
as well, the structure of ears may filter the flow of air, while the recorders r too sensitive about them.
in brief, let me know how can i have the best output and the most similar to one i'd heard b4.
thx