My experience with copy paste editing and zero crossings... There must be improvements to it however

I’ve spent quite a lot of time familiarizing myself with the audacity functions. I’m still having issues copy and pasting audio tracks together, but I’m getting better at it here are the problems I’m having:

Using at zero crossing, I find it works for the audio but my technical understanding of it is clearly flawed… First of all I think it works occasionally because it involves deleting a part that has the click. Also sometimes I’m searching for the vertical variance in the wave that indicates the pop or click but it’s not visually represented so I don’t know what to select. Occasionally I’ll randomly select and delete using the zero crossings (probably incorrectly), I have a problem with the lack of efficiency in it. I’m sure theres a better method,im just ignorant.

Also with the audio project, as I copy and paste the audio track, eventually it comes to the stage where I sync it with the video it belongs to and after hitting delete with zero crossings so many times it takes a significant amount of time out of the audio to the point when it’s added to the video eventually they’re not in sync, but off by very little but visually very obvious.

The best copy paste method I find is looking where the sound waves are very similar in recordings and then copy paste with no other function. But it’s very difficult finding entry points that will allow that. Occasionally I can’t find any after searching for half an hour or more.

If it helps I’m essentially editing a recording of music played on a acoustic instrument. It’s a video and I’m removing the wrong notes from it by copy pasting various takes.

So I’m a little experienced but I know there’s people with a lot of knowledge out there I could use. Thanks

it takes a significant amount of time out of the audio to the point when it’s added to the video eventually they’re not in sync,

You may have a [u]DC Offset[/u] which means you won’t get zero-crossings as often as you’d expect.

You can also have an issue if the left & right zero-crossings don’t match.

One solution is a short [u]crossfade[/u] (an overlapped fade-out and fade-in). That will almost always make a smooth splice. A very-short crossfade (maybe 30 or 30 milliseconds) should be unnoticeable. In some cases a longer crossfade may work better. If you are “careful” you can fade-in and fade-out your “main track” without affecting the overall timing.

And I thought there was something of a method to that effect. Thanks for the crossfade advice. I’m currently trying my previous method and it’s rather maddening. I’ll look into that.

I think I’ll have to read up on the technical aspects of zero crossings. But my understanding is correct that it deletes from the entire track? I’m thinking if you do it right, it could be less wasteful and thus negligible.

Also the pops appear on the spectrogram generally but not always, is that actually possible?

Also I’ve been suggested reaper for good crossfading, but I’m thinking it may depend on the nature of the project. I’ve been told it does some of the technical work for the user.
Thanks again

Alright double post, and sorry about that, but:

Yes the crossfade works, what a easy solution. However I found the manual for types of fades, since the linear default doesn’t work. The manual doesn’t indicate how to implement the various types, unless I’m stupid, which I am. Where are the settings for adjusting this? I’m looking to apply the equal power fade. Thanks

Audacity has two effects for crossfading.

  • Crossfade Tracks” is best when creating medium to long crossfades between tracks. It offers a choice of three different fade “shapes”. The two audio clips being crossfaded must be on separate tracks.
  • Crossfade Clips” is best when creating short crossfades between two clips. The clips must both be in the same audio track. This effect has no options and no GUI, so it is a good, quick way to join clips when only a very short crossfade is required for the purpose of avoiding clicks at edit boundaries.

It’s a video and I’m removing the wrong notes from it by copy pasting various takes.

There’s a career move…

You might try Effect > Change Pitch if it’s just a fractional-note pitch error.

Koz

There’s a career move…

Actually I’m very happy with my current career, definitely pays well. Except for the occasional negative person that opens their mouth because they think they know everything. But you find those in all avenues in life. This isn’t a project directly related to that.

But yea thanks that’s very constructive of you.

You might try Effect > Change Pitch if it’s just a fractional-note pitch error.

That wouldn’t work since there’s very heavy textures that accumulate based on a variety of factors. Good to know however.

Does anyone know how to set the fade to power fade so the sound doesn’t drop in the center of the fade? Thanks

Does anyone know how to set the fade to power fade so the sound doesn’t drop in the center of the fade? Thanks

Maybe a little more overlap? That won’t make it perfect but it will help. Or, I think you’re looking for the optional [u]Cross-Fade In and Cross-Fade Out[/u].

A constant-power crossfade can get “tricky” because -3dB is half-power but it’s about 75% amplitude. When you mix (add) two 75% waves you can get 150% (clipping) on the peaks even though the RMS (or power or loudness) is only back to 100%.

That’s really helpful, I’ll play around with that. Really glad I have this forum as reference. :ok_hand:t2: