Remove glitch

Hi everybody,

I have a full session of music and it has an annoying sound (hear glitch.mp3). Could anybody please help me to remove it? In case it’s possible.

Thx in advance

You can repair the glitches one by one using the Repair tool, but as there are hundreds of them it will take infinite patience and a long time to do.

Yes, that’s an annoying sound. How did you record that track?

The noise is too loud for Audacity’s Noise Removal effect to get rid of it.

– Bill

It’s an hour length session so it’s unfeasible to do it one by one.

The session was recorded plugin the output channel of a sound mixer table to the line in of the soundcard.

There is a method of removing lots of glitches at once using Steve’s “Pop-mute*” plug-in,
but the results are far from perfect …

(* the “linked stereo” channels version of “Pop Mute” is required)

Thx Trebor but as you say the results are far from perfect.

Is it possible to create macros with audacity. Let’s say I select from 00:00:00+0samples to 00:00:00+128 samples and I apply the repair tool. Then I select the next 128 samples and I apply the repair tool again.

No that isn’t possible, but even if it were it would not work. The Repair effect just “smooths” the waveform within the selected section - if you applied it to every 128 samples then it would remove all but very low frequency components of the sound (similar to using a low-pass filter with a very low cut-off frequency).

Sorry to say, but I think that recording is toast. Better to find out what caused the interference so it doesn’t happen again.

Was this recorded on a laptop while the laptop was running on the charger?

– Bill

I’ll search for the cause of the interference actually it’s the first time it happens after many recordings.

I do not have a laptop and I think there is no charger near the mixer nor the computer.

Thx for you help

That’s a weird click sound, it almost sounds like a multi-sample hi-hat or something.
Too bad it lasts over an hour, always remember to check your equipment before
recording or at intervals to make sure the quality is up to your standards.

If you have a TON of time, you could just zoom in on the frequency spikes and
hand delete them (select the spike, then delete), the effect to the audio will
probably be minimal.

This would probably take months, but you could always split the recording up
into songs or ?mini-mixes? and work on them as you have time. Depends on if
you think it is worth it (which you probably do).

I myself recently downloaded a mp3 with these weird data (non-audio) parts
thrown in (kinda like an .dls or .sf2 type of thing). As the tune is rare, Manix,
“Hard-Core Junglism” and (unlike most of the techno tunes from this era) I
happen to dig it, I’m actually going through and fixing the track (better to have
the song in my archive than just the name). It’s actually kind of fun…

Sounds to me like switching power supply noise or dimmer noise. Loop the “clean” noise sample at the start of the track.

But you may be right, it’s pretty much with the beat, so could be a fault in the drum machine itself or a bad channel on the mixing board, or a bad cable …

– Bill