Problem - Wav-export, noice appearing

I would appreciate some assistance on the following: My son aged 14 have used Audicity to make a presentation at school. They had to export the result and submit it as a wav-file. The file generated do unfortunately contain short sections with loud sounds. Unfortunately, the original Audicity project has been deleted, so we are stuck with the wav-file (and a low grade). I would like to make the case that he should not be evaluated based on the unfortunate export, but rather his skills related to preparing the presentation. But still, I would appreciate views related to the error which did oocur on export.

we are stuck with the wav-file (and a low grade).

Typically, people insist on export music as MP3. MP3 is a delivery format and creates sound damage with the goal of a large number of sound files.

WAV is an uncompressed format with excellent quality. We recommend exporting a WAV file of a project against the time that the Project becomes damaged. You can use the WAV file instead of a Project for most jobs.

So I’m guessing you exported an MP3 file at the beginning, not WAV and that’s where the low quality is coming from.

MP3 compression is one of the reliable ways to kill your show. Once you create compression damage, it’s burned into the show and that’s the end of the story. See #3.

The Four Horsemen of Audio Recording (reliable, time-tested ways to kill your show)
– 1. Echoes and room reverberation (Don’t record the show in your mom’s kitchen.)
– 2. Overload and Clipping (Sound that’s too loud is permanently trashed.)
– 3. Compression Damage (Never do production in MP3.)
– 4. Background Sound (Don’t leave the TV on in the next room.)

If you are confused as to the type of file you have, you can force Windows to show you the whole filename including extensions. MyMusic becomes MyMusic.mp3.

Hidden File Extensions
– Start > My Computer > Tools > Folder Options > View > [ ] Hide Extensions for Known File Types (deselect)
– Apply (to this folder) or Apply to All Folders
– OK

So there’s two bad decisions. Exporting the original show as MP3 instead of WAV, and then damaging or deleting the original Audacity Project. I still have backup files of valuable projects and sound files over a year old.

Now you also know how to force Windows to show you file extensions.

I’d say this was a terrific learning experience. Nobody ever learns anything from a show that goes perfectly.


Thanks for your quick response. The file given to me is in Wav-format, it has generally high quality, but occationally there appears lound nices which lasts for a few seconds before I again can hear their voices. The noice is “technical” and not intentional. If you want to hear it, please follow this link to my dropbox site:

It’s quite peculiar how the bursts of noise are so regular.
At what point did the noise appear? Was it in the original recording?