Take the 2-minute tour ×  I have some noisy audio files, which
are voice recordings or lectures. There is no music, but the
recordings are noisy.  Sometimes, the voice is not clear. Is
there any software that can extract the clear voice out of those
audio files? It would be better to have automated processing and
batch processing supports.  I'm using Windows 7.  share|improve
this question  2 Answers 2  Regardless of OS, Audacity can do
this just fine. So says Wikipedia:  Noise Removal based on
sampling the noise to be removed. Surface noise from records,
for example, can be removed with hardly any discernable effect
on the music.  See this Audacity Wiki entry for Noise Removal.
As for batch, see the manual page.  share|improve this answer
just a short comment. Sometimes the recording is so bad, that it
is almost impossible to extract the voice. And human ear is much
more capable to filter out the voice, than any SW. I tried
Audacity for some school lessons recordings and in many cases
got only terribly soun