Hi
I am newbie in audacity and i need answer to a question.
I recorded audio using my android phone with the mic built in. when i played the audio on my computer the noise coming out was unbelievable horrible.
I did few words while recording but the air, wind , noise , distortion take place over my voice and the sound played was like listening to FM radio.
Is that possible to clear / split / remove that FM sounding in that recording.
The shhhh hiss-noise is impossible to remove completely because it contains all frequencies.
Audacity has a noise-reduction feature which can reduce it somewhat … https://youtu.be/PzZplo0oApI?t=103
when i played the audio on my computer the noise coming out was unbelievable horrible.
I assume it sounds equally-bad on your phone?
When the noise is bad there’s not a whole lot you can do. Just FYI- The Noise Reduction filter (effect) works best when you have a constant low-level background noise. If the noise is bad, “The cure can be worse than the disease.”
Is this a voice recording? If it’s voice you may be able to make SOME improvement by filtering-out the low (bass) frequencies (maybe below about 150Hz), and the highest frequencies (maybe above 7000Hz), and possibly by boosting the main voice frequencies (~200-300Hz) and the remaining higher frequencies to bring out the “'T” and “S” sounds. But, the voice (including harmonics & overtones) covers most of the hearing range and noise often covers the same/similar range(s) so there’s only so-much you can do with filtering.
and the sound played was like listening to FM radio.
FM radio isn’t THAT bad! 
We’ve been assuming you have microphone or system problems. Were you hand-holding your phone outside? That’s not easy. Any wind at all will show up as rumbling, thumping or popping. If you’re not careful, each tiny movement of your hands will arrive as a shuffling or shishing noise.
If you have all of those problems, you record it again. Better yet, record sound tests and get used to how your phone works.
But wait, there’s more. Phones can have filters and effects to help you with noises. iPhones have two different recorders depending on whether you want the automatic corrections or not.
Koz
Thank you guys for the suggestions.
I did try noise reduction but it didnt help and The shss noise still there.
I will try more and see if i can get a better result.
The recording performed inside the house and the phone was on the table. I did several record with different settings built in the app but the same output results.
Record a 20 second sound test according to this:
http://www.kozco.com/tech/audacity/TestClip/Record_A_Clip.html
And post it on the forum. Sometimes descriptions aren’t enough.
Koz