This adjusts the volume balance between oscillators 1–3 and the noise generator.
These settings are the input levels to the filter.
1. OSC 1 Level (OSC1 Lvl) [0...127] (CC#23)
Sets the output level of oscillator 1.
2. OSC 2 Level (OSC2 Lvl) [0...127] (CC#24)
Sets the output level of oscillator 2.
3. OSC 3 Level (OSC3 Lvl) [0...127] (CC#25)
Sets the output level of oscillator 3.
4. Noise Level (Noise Lvl) [0...127] (CC#26)
Sets the output level of the noise generator.
The filter removes unnecessary frequency components from the sound of the oscillator. This shapes the tone by allowing only the desired portion of the sound to pass.
The Type parameter fades between the different filter types (i.e., the method used by the filter to cut the frequencies). The Cutoff parameter sets the frequency at which the cut will occur. Normally, turning the knob clockwise brightens the sound, and turning it counterclockwise darkens the sound. The Resonance parameter emphasizes the frequency region near the cutoff frequency, adding a distinctive character to the sound.
1. Type [LP4 (0), ..., LP2 (32), ..., BP2 (64), ..., HP2 (96), ..., HP4 (127)] (CC#27)
This fades between the different filter types. The values between types determine the mix of those types relative to one another.
LP4 (0): A -24 dB LPF (-24 dB/oct low pass filter). The -24 dB LPF is a common type of filter that lets the frequencies below the cutoff frequency pass through, and cuts the frequencies that are above. Lowering the cutoff frequency makes the tone darker and more mellow.
LP2 (32): A -12 dB LPF (-12 dB/oct low pass filter). The -12 dB LPF has a more gentle slope than the
-24 dB LPF, producing a more natural-sounding effect.
BP2 (64): A -12 dB/oct BPF (band pass filter). The -12 dB BPF allows frequencies within the band around the cutoff frequency to pass, and cuts the remaining frequencies. Use this when you wish to emphasize only a specific portion of the frequency range. For example, you can use this to create sounds that use only certain frequency bands, like voices heard over the radio or the telephone.
HP2 (96): A -12 dB/oct HPF (high pass filter). The -12 dB/oct HPF is a filter that lets the frequencies higher than the cutoff frequency pass through, and cuts the frequencies that are lower. Use this when you wish to make the sound thinner. Note that if you raise the cutoff frequency too much, the volume decreases significantly.
HP4 (127): A -24 dB/oct HPF (high pass filter). The -24 dB/oct HPF is a steeper filter than the -12 dB/oct HPF.
Sets the cutoff frequency. Increase this value to raise the cutoff frequency.
Tip: The Cutoff value varies the sound by time-variant change produced by the filter EG, by the dynamics of your keyboard playing (velocity) and by the note you play (keyboard tracking).
Note: Some cutoff settings may make the volume significantly quieter.
3. Resonance [0...127] (CC#71)
Sets the resonance of the filter. This emphasizes the overtones near the cutoff frequency specified by the Cutoff parameter, adding a distinctive character to the sound. Increasing this value emphasizes the effect.
Tip: Since the overtones that are emphasized by the resonance change when you move the Cutoff knob, it’s best to adjust both the Cutoff and Resonance knobs.
4. Drive [0...127] (CC#83)
Sets the drive circuit distortion effect.
5. Keytrack [-200.0...0.0...200.0%] (CC#28)
This specifies how keyboard tracking (the note you play on the keyboard) affects the cutoff frequency.
For example, if the sound you hear when playing the C4 key has the desired tone but higher notes don’t have enough resonance or are too mellow-sounding, you can adjust the keyboard tracking to compensate so that the cutoff frequency rises as you go up the keyboard.
With a positive (+) setting, the cutoff frequency rises as you go up the keyboard from C4, and falls as you go down the keyboard. With a negative (-) setting, the cutoff frequency falls as you go up the keyboard from C4, and rises as you go down the keyboard. With a setting of +100.0 %, the change in cutoff frequency is proportionate to the change in pitch. With a setting of 0, keyboard tracking does not affect the cutoff frequency.