how to cut out backround noise

Hi all my first post here and i need a little help. Can anyone tell me how to cut out background noise on a recording. I recorded a conversation which i really need to hear clearly but i recorded it with an analog dictation device so i have converted to the correct format which audacity can work with. Its the conversation i really need to hear but theres backround music from a tv and the conversation cant actually be heard properly. I really have no clue how i could clear this up using audacity but im hoping someone can shed some light as i desperately need to get this done.

Thanks in advance for any help :slight_smile:

Sorry im using windows 7 and audacity 2.0.2 if that makes any difference

which i really need to hear clearly but i recorded it with an analog dictation device so i have converted to the correct format which audacity can work with. Its the conversation i really need to hear but theres backround music from a tv and the conversation cant actually be heard properly.

:frowning: That’s bad news… Noise Reduction can sometimes work very well if you have a constant low-level background noise. But if the noise is bad, the software can’t tell the difference between the signal and the noise.

Your brain is usually the best “filter” so if you can’t make-out what’s being said, the computer is unlikely to be of any help. And, a recording is usually worse than the live event… When you’re in a room with noise, your ears & brain can ignore sound coming from different directions. In the recording, it all comes-out together and the noise sounds worse. If you’ve used a video recorder you’ve probably noticed noise that you didn’t notice when you were there making the video.

The stuff you on TV and in movies where they pull a conversation out of crowd noise at a party (or something like that) is pure science fiction.

Pros still record in soundproof studios with good equipment and good-close microphone positioning, etc. On-location movie dialog (and sound effects) is re-recorded in the studio.

Thanks for the reply mate. Is there anything at all i could do through audacity to clear it up even a little. Its just audio no video and its an olympus vn7500 recorder i think

If it’s for a court case, as many of these types of requests are, you should use your favourite search engine to look for “audio forensics”. Only a forensics practitioner recognised by the legal system would be regarded as able to provide legally admissible audio evidence.

Otherwise you “might” be able to use Isolation in Vocal Reduction and Isolation to “somewhat” clarify the voice. You will need Audacity 2.1.1 from http://audacityteam.org/download/windows to obtain that effect.

Or try ISSE : An Interactive Source Separation Editor which doesn’t rely on what you want to isolate being centre-panned, as Vocal Reduction and Isolation does.


Gale