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| AGC Drive feature https://forums.stereotool.com/viewtopic.php?f=3&t=14798 |
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| Author: | BeDazzler [ Sat Feb 18, 2017 9:37 pm ] |
| Post subject: | AGC Drive feature |
Hi HVZ, I have been looking at the AGC Drive feature as a method for increasing / maintaining volume if we have a quiet input source. Rather than using Input gain, I was thinking of adding AGC Drive. I can't find any doco on the AGC Drive feature. Can you please explain how to use it in conjunction with AGC meter level displays. Many thanks BeDazzler. |
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| Author: | hvz [ Sun Feb 19, 2017 2:27 pm ] |
| Post subject: | Re: AGC Drive feature |
Hi, It works exactly the same as "Pre Amp". I added it here because Pre Amp is something that no other processor uses, everyone else uses AGC Drive. But it works exactly the same. |
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| Author: | BeDazzler [ Thu Feb 23, 2017 10:07 am ] |
| Post subject: | Re: AGC Drive feature |
Hi HVZ, Thanks, that makes sense and aligns with what I see on other devices.... but...... is it dynamic ? ie: Does it detect the input volume level and automatically adjust depending on the input volume as opposed to just increasing the volume without checking the actual input level ? BeDazzler. |
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| Author: | Mathijsco [ Thu Feb 23, 2017 11:21 am ] |
| Post subject: | Re: AGC Drive feature |
Quote: ie: Does it detect the input volume level and automatically adjust depending on the input volume as opposed to just increasing the volume without checking the actual input level ?
It increases the level before the audio enters the AGC. It's the AGC's task to adjust dynamically.
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| Author: | BeDazzler [ Thu Feb 23, 2017 7:23 pm ] |
| Post subject: | Re: AGC Drive feature |
Thanks @Mathisjsco, I understand that.... but driving the AGC input is an easy way to create distortion before the AGC which will make it harder to remove (ie: distortion will be present from early in the chain). When using the input gain feature it appears to be clever because it only increases the gain up to a point. My question was around using input gain vs AGC drive - is it more reliable to drive the AGC input harder OR is it more efficient to adjust input gain and let the AGC just do it's thing as per normal ? BeDazzler. |
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| Author: | hvz [ Thu Feb 23, 2017 9:27 pm ] |
| Post subject: | Re: AGC Drive feature |
It cannot create distortion. |
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| Author: | BeDazzler [ Fri Feb 24, 2017 4:57 am ] |
| Post subject: | Re: AGC Drive feature |
HI HVZ, I've been playing with the AGC Drive on our test rig and it does create a more firm sound, but it gets harsh. It's still not clear to me how the AGC Drive works... does it just arbitrarily increase the volume going into the AGC and nothing else ?? You say it does not cause distortion, so..... how is it different from Pre-Amplifier ? Thanks BeDazzler. |
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| Author: | hvz [ Mon Feb 27, 2017 12:37 am ] |
| Post subject: | Re: AGC Drive feature |
It's the same as Pre Amplifier. Are you using a ratio in the AGC? |
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