Audacity Forum

If you have a stereo recording you can remove the echo/reverb by centre pan isolation (Kn0ck0ut) Stereo Airport smoking announcement, Before-After centre pan isolation, (kn0ck0ut).mp3 The voice is common to both channels but typically the echoes reach the different channels at different times so are...

Here’s a before-after example of echo reduction using the time-shift spectral-subtraction technique I described above. The “before” has had plenty of synthetic echo added Before-After echo reduction by time-shifted spectral subtraction method,.mp3 It does remove a lot of the echo but you can hear sp...

Ron S wrote:... Still need to test the software to make sure it does not have the "voice logo" feature.

Examples of Audacity screens are shown here ... http://audacityteam.org/about/screenshots
If you have a look you can tell at a glance if you've got the real McCoy.

I have tried to reduce echo by spectrally subtracting a time-shifted version of the original echoey recording from itself , (the time shift equal to the echo time). This does help a bit, but adds another very faint distorted echo at twice the original echo time. If there were multiple echoes with di...

This is where to download Audacity from ... http://audacityteam.org/ BTW Audacity is free. I'm guessing you have mistakenly downloaded a free trial version of another audio editor, nothing to do with Audacity, which repeatedly inserts a spoiler phrase, the "voice logo", into any project you create, ...

I don't know of any filters that will even help a little. What about hyperexpanding a copy and spectrally subtract it from the original (using Kn0ck0ut) ?, e.g. ... Before-After attempt at echo reduction mp3.mp3 It's a little better. Update: it just occurred to me an expander would be a simpler way...

Unfortunately Kn0ck0ut won't get rid of the big Nelly, (I've tried), you'd be better off looping Nelly-free bits, e.g. attached ...
If you want to avoid being sued for breach of copyright make a similar backing track from Freesounds.

Trebor, I understand the gist of your suggestions, but don't know what "advancing a track by a few samples" means or how to do it.. I should have said retard rather than advance :oops: ... Split the stereo into dual mono, then add ("generate") a few samples of silence at the start of one of the mon...

To avoid the destructive interference when converting stereo to mono, resulting in loss of high frequencies, two ideas come to mind .. 1. Put the tracks very slightly out of sync by advancing one of the tracks by a few samples before converting to mono. or 2. applying a minute imperceptible amount o...

Widener zip from http://audacityteam.org/download/nyquistplugins now opens no problem on my computer,

(BTW I'm using firefox) .