8051 5.1 Compressor | User Guide |
Control Link
While the SC link buttons control the audio inputs to each sidechain, the CV link buttons choose where the D.C. control voltage generated by each sidechain is routed. The CV link buttons also determine which gain makeup control affects each channel, in the same way that the SC link buttons assign the threshold controls.
For the output of a sidechain to be correct, it must be fed back to the channels it is derived from. Pressing an SC link button will therefore illuminate the corresponding CV link button and lock it on.
| 100 |
| FILTER TO CHANNEL |
80 |
| 120 | |
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| IN/OUT | 1 | 2 | 3 | 4 | 5 | 6 | |
0 |
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| BYPASS |
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| 1 | 2 | 3 | 4 | 5 | 6 |
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15 1/2 | 15 | 15 5/6 | 15 |
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| SIDECHAIN LINK |
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| 1 | 2 | 3 | 4 | 5 | 6 |
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| A | A | A | A | A | A |
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| 1 | 2 | 3 | 4 | 5 | 6 |
15 | 15 | 15 | 15 | B | B | B | B | B | B |
3 |
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| SC TRIMS dB |
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| SIDECHAIN FILTER |
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| IN/OUT |
| 1 | 2 | 3 | 4 | 5 | 6 |
| 100 |
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80 | 120 |
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| EXT | 1 | 2 | 3 |
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| A | A | A | A | A | A |
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| CTRL |
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| EXT | 1 | 2 | 3 |
| 4 | 5 | 6 |
| Neve | B |
| B | B | B | B | B | B |
| CTRL |
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Most compressors apply gain reduction based entirely on the signal level at their inputs. A level detector examines the input and drives an output VCA that is assumed to have a complimentary response (a
This means that the control voltage linking has to follow sidechain linking to maintain a closed loop. Once this feedback is in place the sidechain output can be linked to other channels using the remaining unlit CV link buttons. These channels then follow the same dynamic envelope as the SC Linked channels, but without their audio content affecting the compression.
A channel may also have control voltage linked from both sidechains. In this case the sidechain providing the most gain reduction at any moment controls the channel, and the greater of the two gain makeup settings will be applied.
The CV Link buttons are disabled unless either a channel or the key has been routed to the associated sidechain, or when in external mode.
Issue 2 | Page 7 |
