Audacity Forum

May be possible in some cases but don't bank on it ...

http://forum.audacityteam.org/viewtopic ... val#p45124

Forget my notch filter suggestion, this is unsalvageable, a hopeless case, (sample attached). I have a cheap and nasty voice recorder and it sounds infinitely better, i.e. your recording is not typical of these voice recorder thingys. The signal to noise ratio is very poor, have you amplified this s...

kozikowski wrote:What does Repair do?

Koz

Smoothes out the join after a cut n' paste job.

In Audacity the selection controls do not always allow zero crossing points to be exactly selected,
"repair" can be used to erase any discontinuity at the join which could otherwise cause a click.

Those voice recorders, (no I won’t do the Dick-to-phone joke), can suffer from clock noise. If the recording does suffer from clock noise when you analyse the frequency content of a “silent” part of the recording you will see large spikes occurring at particular frequencies, (often equally spaced e....

Zoom in on the join, select an area covering a few dozen* sample points either side of the join and use "Repair".
*Repair in Audacity 1.3 only works over a maximum of 128 sample points.

For me it sounds much better :) Can you tell me how did you do that ? "Noise removal" in Audacity 1.3, (it's much better than noise reduction in Audacity 1.2), and "equalization". I've had another go (mp3 in zip)... I know you're goin' shopping #2.zip Unfortunately It's a matter of swapping one typ...

The distortion reminded me of interference caused by car ignition, (perhaps the other person was in a car with its engine idling).

If by "quiet" you mean "should be silent" then a gate will do this: when the amplitude of the audio drops below threshold it is zeroed by the gate. (I've got the " GGate " VST plugin working successfully on Audacity) You'll need the VST enabler to use VST plugins on Audacity, (even then not all VST ...

I've had a go at reducing the distortion, (a before & after example attached, wav in zip file),
However I doubt Audacity or any other software could get rid of it completely.

The bitrate chosen for MP3 export could be responsible for a loss in sound quality on the mp3 version, use 256 or 320Kbps for high quality sound ...