Urgent help needed

RodThompson

RodThompson

Veteran
Hey, I'm laying the audio to pace my documentary, but for some odd reason I have hideous peaks that are causing it to sound like someone taps the mic every few seconds. I have included a pic, if someone could help a brother out on how to normalize this without losing quality or volume? The highlighted portions are just some of them, you can see the rest.

soundissues.jpg
 
Sounds like sample rate mismatch. For instance you brought the music in digitally (44.1) while your audio interface was clocked to the digital video (48). That situation will cause exactly those kinds of clicks. The fix is to go bring it in correctly and then sample rate convert it to the correct sample rate. Your doing digital video so you want all your sound at 48K. CD's and most music folks work at 44.1 (or 88.2K) because CD's are all at 44.1K.
 
Well of course it's recorded, that doesn't mean much. If you are seeing this on the master recording then the clock miss-match happened while recording and you don't have any good options. You might try a click removal plugin. These are full digital spikes and they should be easily detected. Otherwise it's one at a time with a pencil tool...yawn. The up side is that however you do it they should be cleanly removable. If you don't have the master recording then I would get whoever to retransfer.
 
What is it you "laid down" that caused these clicks? Is it a recording of people talking? Do the clicks only happen when you mix all the parts together? Are the clicks on any individual track of audio?

If it's on the original audio file, you can run a Click Removal plug-in. They use that for LP records. There may be one in soundtrack pro. But you need to give more info.
 
Looks like mechanical and/or acoustic noise, or maybe electrical noise. Hard to say without actually HEARING it. It does NOT look like any kind of digital artifact. Digital artifacts tend to be more "absolute" with single-sample spikes that are impossible to generate in the analog world. And something like a sample-rate mismatch would be much more regular. If you really want a useful answer, post a few seconds (in uncompressed WAV format) somewhere so we can hear it.
 
Richard Crowley said:
Looks like mechanical and/or acoustic noise, or maybe electrical noise. Hard to say without actually HEARING it. It does NOT look like any kind of digital artifact. Digital artifacts tend to be more "absolute" with single-sample spikes that are impossible to generate in the analog world. And something like a sample-rate mismatch would be much more regular. If you really want a useful answer, post a few seconds (in uncompressed WAV format) somewhere so we can hear it.
Click to expand...

Are you seeing the same thing I am? It looks to me that what he is talking about are those short (looks to me to be single sample) spikes that are periodic in the waveform. They look to have a zero attack and decay which would make them digital. Maybe we are looking at different things. And yes it would be very helpful if there were a sample to actually look at and listen to.
 
I was assuming (perhaps incorrectly) that Mr. Thompson was referring to the highlighted parts of the waveforms. The sharper spikes do look more "digital", but they are too irregularly spaced (and irregular amplitude, as well) to be digital artifacts of conversion, etc.

But, of course, we are all just making wild guesses in the dark without being able to hear it. Without an uncompressed sample to hear and analyze, further discussion is pretty much useless.
 
Richard Crowley said:
I was assuming (perhaps incorrectly) that Mr. Thompson was referring to the highlighted parts of the waveforms. The sharper spikes do look more "digital", but they are too irregularly spaced (and irregular amplitude, as well) to be digital artifacts of conversion, etc.

But, of course, we are all just making wild guesses in the dark without being able to hear it. Without an uncompressed sample to hear and analyze, further discussion is pretty much useless.
Click to expand...

A better point than mine.

Cheers
SK
 
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