Chromatizm
Experienced
Following the latest forum "input" discussions, I'm trying to find the best input pad setting for my Fishman Abasi's to avoid clipping. It was suggested to simply record a DI signal and look for a clipping signs, I did a few tests here and here. The signs were there big time, but @DLC86 mentioned I was doing it wrong, so I started from scratch after checking all relevant section of the manual again.
Recording via USB a simple In1->Out1 preset, all defaults in both blocks, gate threshold off. Validation screenshot:
Manual says this: "Choose your loudest pickup setting and set all the guitar controls to “wide open.” Play loud, open chords to push the levels as you watch the IN 1 [INSTRUMENT] meter LEDs. It’s OK to tickle the red LED once in a while, but if actual clipping occurs, you must pad the input".
Screenshots below show the results for biggest peaks for 0 to 6 to 12 to 18dB (left to right) with some very strange 12 and 18dB peaks - they basically have... dips? What are those?
I don't know what to make of it. I'm confused. So I'm following this advise: "PS: or, in alternative, turn down the level parameter in the OUT1 block to -18 dB" and re-recording. The results are:
So it seems that 0dB does result in clipping. Good to know. Not sure what to make of -6dB results. I've did same test a few times and I think that -6dB are not clipping. UPD: nope, definitely clipping sometimes.
But what about the clipping I've got when the Out1 block (not hw button) was set to 0dB? There are dips even with -6dB padding in some cases:
So I should work with the Out1 block output volume until I find the value which doesn't result in any visible artifacts in the graphs and apply it to all my presets? I've tried a few but everything above -18dB seems to hit the reds in the Out1 output meter periodically.
Is this it? The problem is in the Out1 block right on the grid? I should use-6dB -12dB padding with -18dB in the Out1? I'm am so lost with all this.
@State of Epicicity I'm not sure this is what you are looking for but maybe these results would be somehow useful to you too.
Recording via USB a simple In1->Out1 preset, all defaults in both blocks, gate threshold off. Validation screenshot:
Manual says this: "Choose your loudest pickup setting and set all the guitar controls to “wide open.” Play loud, open chords to push the levels as you watch the IN 1 [INSTRUMENT] meter LEDs. It’s OK to tickle the red LED once in a while, but if actual clipping occurs, you must pad the input".
Screenshots below show the results for biggest peaks for 0 to 6 to 12 to 18dB (left to right) with some very strange 12 and 18dB peaks - they basically have... dips? What are those?
I don't know what to make of it. I'm confused. So I'm following this advise: "PS: or, in alternative, turn down the level parameter in the OUT1 block to -18 dB" and re-recording. The results are:
So it seems that 0dB does result in clipping. Good to know. Not sure what to make of -6dB results. I've did same test a few times and I think that -6dB are not clipping. UPD: nope, definitely clipping sometimes.
But what about the clipping I've got when the Out1 block (not hw button) was set to 0dB? There are dips even with -6dB padding in some cases:
So I should work with the Out1 block output volume until I find the value which doesn't result in any visible artifacts in the graphs and apply it to all my presets? I've tried a few but everything above -18dB seems to hit the reds in the Out1 output meter periodically.
Is this it? The problem is in the Out1 block right on the grid? I should use
@State of Epicicity I'm not sure this is what you are looking for but maybe these results would be somehow useful to you too.
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