Yamaha QL5 Reference Manual - Page 225
Compressor, Expander
![]() |
View all Yamaha QL5 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 225 highlights
Output Level Input Level Output Level Output Level Input Level Output Level COMPRESSOR The COMP processor attenuates signals above a specified THRESHOLD by a specified RATIO. The COMP processor can also be used as a limiter, which, with a RATIO of ∞:1, reduces the level to the threshold. This means that the limiter's output level never actually exceeds the threshold. Parameter Range THRESHOLD (dB) -54 to 0 (55 points) RATIO 1.0:1, 1.1:1, 1.3:1, 1.5:1, 1.7:1, 2.0:1, 2.5:1, 3.0:1, 3.5:1, 4.0:1, 5.0:1, 6.0:1, 8.0:1, 10:1, 20:1, ∞:1 (16 points) ATTACK (ms) 0-120 (121 points) RELEASE (ms) 44.1kHz: 6 ms - 46.0 sec 48kHz: 5 ms - 42.3 sec (160 points) OUT GAIN (dB) 0.0 to +18.0 (181 points) KNEE Hard, 1-5 (6 points) Description This determines the level of input signal required to trigger the compressor. This determines the amount of compression, that is, the change in output signal level relative to change in input signal level. This determines how soon the signal will be compressed once the compressor has been triggered. This determines how soon the compressor returns to its normal gain once the trigger signal level drops below the threshold. The value is expressed as the duration required for the level to change by 6 dB. This sets the compressor's output signal level. This determines how compression is applied at the threshold. For higher knee settings, compression is applied gradually as the signal exceeds the specified threshold, creating a more natural sound. • I/O Characteristics (KNEE= hard, OUT GAIN= 0.0dB) THRESHOLD RATIO • Time Series Analysis (RATIO= ∞:1) Input Signal Output Signal ATTACK RELEASE THRESHOLD EXPANDER An expander attenuates signals below a specified THRESHOLD by a specified RATIO. Parameter Range THRESHOLD (dB) -54 to 0 (55 points) RATIO 1.0:1, 1.1:1, 1.3:1, 1.5:1, 1.7:1, 2.0:1, 2.5:1, 3.0:1, 3.5:1, 4.0:1, 5.0:1, 6.0:1, 8.0:1, 10:1, 20:1, ∞:1 (16 points) ATTACK (ms) 0-120 (121 points) RELEASE (ms) 44.1kHz: 6 ms - 46.0 sec 48kHz: 5 ms - 42.3 sec (160 points) OUT GAIN (dB) 0.0 to +18.0 (181 points) KNEE Hard, 1-5 (6 points) Description This determines the level of input signal required to trigger the expander. This determines the amount of expansion. This determines how soon the expander returns to its normal gain once the trigger signal level exceeds the threshold. This determines how soon the signal is expanded once the signal level drops below the threshold. The value is expressed as the duration required for the level to change by 6 dB. This sets the expander's output signal level. This determines how expansion is applied at the threshold. For higher knee settings, expansion is applied gradually as the signal exceeds the specified threshold, creating a more natural sound. • I/O Characteristics (KNEE= hard, OUT GAIN= 0.0dB) THRESHOLD • Time Series Analysis (RATIO= ∞:1) Input Signal Output Signal ATTACK RELEASE THRESHOLD Input Level Time Time RATIO Input Level Time Time 6 Data List
![](/manual_guide/products/yamaha-ql5-reference-manual-f6aaad0/225.png)