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#1
Posted to rec.audio.pro
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RNC compressor as a deesser
Hello,
I was reading the FMR audio site on using the RNC as a deesser. I found the explanations informative but incomplete. Could someone verify this: 1) using the eq in the insert does not make it a multiband compressor. the eq only tells *when* to compress ("when you hear a high frequency sound, reduce the entire signal level"), rather than *what* to compress ("compress only the highs, leave the rest of the signal alone"). since esses and consonants are on the front part of a sound, this is fine. it will simply clamp the whole "ess" sound, and then release when the voice goes back to singing vowels. so even though it is not band-splitting, it's still doing what you want reasonably well. 2) the eq has no effect on the actual frequency spectrum of the audio. the audio will sound the same, the only difference being when the compressor decides to kick in or not. therefore making significant adjustments to the graphic eq only changes the corresponding level-reduction decision making on the RNC. the eq can only help determine when the compressor decides to kick in or not. it cannot sculpt the frequency spectrum of the audio. 3) the graphic eq being patched in is not in the actual audio path. it is merely sending instructions to the compressor. therefore, you can use a cheap graphic eq for this purpose and it won't degrade the sound. |
#2
Posted to rec.audio.pro
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RNC compressor as a deesser
genericaudioperson wrote:
1) using the eq in the insert does not make it a multiband compressor. the eq only tells *when* to compress ("when you hear a high frequency sound, reduce the entire signal level"), rather than *what* to compress ("compress only the highs, leave the rest of the signal alone"). since esses and consonants are on the front part of a sound, this is fine. it will simply clamp the whole "ess" sound, and then release when the voice goes back to singing vowels. so even though it is not band-splitting, it's still doing what you want reasonably well. Right. This is actually much more neutral than a multiband compressor because the audio you hear isn't going through any kind of filters.... only the control path audio is being filtered. There is a discussion of this standard technique in the Yamaha Sound Reinforcement Handbook. Folks have been using it since the sixties. 2) the eq has no effect on the actual frequency spectrum of the audio. the audio will sound the same, the only difference being when the compressor decides to kick in or not. therefore making significant adjustments to the graphic eq only changes the corresponding level-reduction decision making on the RNC. the eq can only help determine when the compressor decides to kick in or not. it cannot sculpt the frequency spectrum of the audio. Yes. 3) the graphic eq being patched in is not in the actual audio path. it is merely sending instructions to the compressor. therefore, you can use a cheap graphic eq for this purpose and it won't degrade the sound. Right, although you might want narrower filters than you get with a cheap graphic. Try it and see. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
Posted to rec.audio.pro
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RNC compressor as a deesser
Thank you, Mr. Dorsey.
And sorry to R.A.P. for the double post. I went back and edited within a minute or two of the original post, but it's still came up as a double post. This happened a day or two ago as well, so I'm going to try to walk around for a minute or two before I post, so I don't have to go back and fix an idea in the post. |
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