Audacity Forum

http://en.wikipedia.org/wiki/Envelope_detector#Audio Apply this full wave rectifier plugin applied to the control track ... http://www.shellworld.net/~davidsky/rectimod.zip Then apply a low pass filter to the rectified track to smooth out the ripples. Those two processes will create the envelope tra...

A notch filter may remove it, e.g ... http://forum.audacityteam.org/viewtopic ... 330#p48309

... Possibly thumb drives will follow in due course . If the consumer had to use a computer to hear the recording on the thumb drive you might as well deliver the audio via podcast . For consumers who do not have a computer at home perhaps you could send them a loaded mp3 player through the post. T...

The weird noises in this recording are compression artifacts. You could reduce these in future by recording lectures at a sample rate of 22050Hz instead of 48000Hz. (The bit rate for your WAV to mp3 conversion may be too low, this can also cause a lot of compression artifacts to occur). I've attache...

I think by "gong" you mean reverberation.
I don't know of a way to remove reverberation with audacity,
but the recording may be improved (made clearer) by using the equaliser:
cut back the frequecies at which the room is most resonant.

Click on "Analyze", then "plot spectrum", to get a graph of the frequency (pitch) content of the selected area of the sound sample.

Machabees wrote:So why do they have plugins that say they can do it?
Or recommend it in this forum, if it can't be done?

Attached an overly de-essed "before & after". Audacity, Spitfish, Windows.

http://forum.audacityteam.org/viewtopic ... ish#p39515

http://en.wikipedia.org/wiki/De-essing

You could try asking the voice talent at the Freesound forum to make a recording for you ...
e.g. http://www.freesound.org/samplesViewSingle.php?id=80187