Here's a strip of recording before and after compression: (I don't know how to get the image to display within a post - it's less than 9kb)
http://www.mediafire.com/file/a363m6y4c7bltnw/Comp_py.jpg
The compressor values for that second image are: threshold -16, Noise -40, Ratio 5:1. I've experimented with Ratio of 10:1, but it doesn't have any effect on that big spike.
Can anyone suggest how to get rid of spikes like that throughout a recording? At the moment I have to do it manually as I edit.
Peter
Removing spikes with the compressor
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I think Mediafire (and other file sharing sites) don't allow sharing of images on other sites - to cut down on their bandwidth. Here's your picture:
It looks like you normalize after compression? I was expecting to see a smaller wave form.
Would you please upload a bit of the recording and post the link? I think experimentation would be easier than guessing.
It looks like you normalize after compression? I was expecting to see a smaller wave form.
Would you please upload a bit of the recording and post the link? I think experimentation would be easier than guessing.
Serial novel: The Wandering Jew
Medieval England meets Civil War Americans: Centuries Apart
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Medieval England meets Civil War Americans: Centuries Apart
Humor: My Lady Nicotine
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Me again.
Just looking at the photo, the file DID compress the spike relative to the rest of the waveform. You cannot remove spikes altogether. However, if you want to do more, I suggest playing with the threshold. On our church sermon recordings (a very dynamic speaker - highs and lows), I use a threshold of -23 dB.
Just looking at the photo, the file DID compress the spike relative to the rest of the waveform. You cannot remove spikes altogether. However, if you want to do more, I suggest playing with the threshold. On our church sermon recordings (a very dynamic speaker - highs and lows), I use a threshold of -23 dB.
Serial novel: The Wandering Jew
Medieval England meets Civil War Americans: Centuries Apart
Humor: My Lady Nicotine
Medieval England meets Civil War Americans: Centuries Apart
Humor: My Lady Nicotine
Speaking less dynamically? - I know, it is not really an option
But if you know that there will be a louder word or sentence, you can back up from the microphone. Else - I have do de-amplify such spikes, too, if that is of any comfort for you.
Monika,
Deamplifying a small section of the track around the spike is what I do, but that's what Peter wants to avoid - manual modification.
Peter,
How much do you see yourself spending on managing those spikes? I mean, if there were a perfect solution, how much time (percentage-wise) would you save versus addressing those loud pieces individually?
Deamplifying a small section of the track around the spike is what I do, but that's what Peter wants to avoid - manual modification.
Peter,
How much do you see yourself spending on managing those spikes? I mean, if there were a perfect solution, how much time (percentage-wise) would you save versus addressing those loud pieces individually?
tovarisch
- reality prompts me to scale down my reading, sorry to say
to PLers: do correct my pronunciation please
Yes, I thought so. I would love to avoid it, too, but the compressor does not work really good for me. Best really is to avoid big spikes, but sometimes that is difficult. Compressor often doesn't catch the big ones without altering the voice so that I don't like it (I apply it if necessary, though), but sometimes I still have to deal with spikes and modify them manually.
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Thanks for your interest, all of you. Here's a short sample (seven seconds), unedited in any way.
https://librivox.org/uploads/tests/Mayhew_py.mp3
I'll go through your posts and add comments to this one shortly.
EDIT: Thanks again. You've got me experimenting with the compressor. I've just tried playing with the threshold, then with all the other parameters, without hitting an immediately obvious solution. But I found that if I compress with "compress based on peaks" checked (that's threshold -14, noise floor -40, ratio 5:1, next two set to minimum, and both check boxes ticked), THEN deamplify by 5dB, I get what looks and sounds like a very acceptable solution.
I'm not going to chance a whole recording without my prooflistener's approval of sound quality, but this may be the solution.
With regard to the amount of time I'm willing to spend, I do go through my whole recording, editing it manually, anyway, but being able to squeeze those spikes throughout my recording first will save me quite a bit of time: up til now I've put a lot of effort into selecting each spike and deamplifying it.
Peter
https://librivox.org/uploads/tests/Mayhew_py.mp3
I'll go through your posts and add comments to this one shortly.
EDIT: Thanks again. You've got me experimenting with the compressor. I've just tried playing with the threshold, then with all the other parameters, without hitting an immediately obvious solution. But I found that if I compress with "compress based on peaks" checked (that's threshold -14, noise floor -40, ratio 5:1, next two set to minimum, and both check boxes ticked), THEN deamplify by 5dB, I get what looks and sounds like a very acceptable solution.
I'm not going to chance a whole recording without my prooflistener's approval of sound quality, but this may be the solution.
With regard to the amount of time I'm willing to spend, I do go through my whole recording, editing it manually, anyway, but being able to squeeze those spikes throughout my recording first will save me quite a bit of time: up til now I've put a lot of effort into selecting each spike and deamplifying it.
Peter
"I think, therefore I am, I think." Solomon Cohen, in Terry Pratchett's Dodger