Roland MMP-2 owner manual Dynamics, Gain GAIN, Filter Type TYPE, Compressor OFF/ON COMP

Using Effects

Because you can make the settings anywhere within this range, it’s even possible, for instance, to set all four points so they’re stacked at the same location, and create a sharp filter.

* A frequency 3 dB lower than the flat portion of the response curve is taken to be the cutoff frequency.

Gain (GAIN)

This sets the amount by which the volume is to be increased/decreased. You can set a value within a range of ±15.0 dB for each reference frequency.

Q (Q)

This sets the sharpness for peaks and valleys. You can set a value within a range of 0.36 to 16 for each frequency band. When the filter type is “LPF2” or “HPF2,” making the Q larger makes the cutoff frequency band more prominent.

On an historical note, with analog peaking equalizers and the like, the sharpness of the peaks that occur in the response curve changes according to the performance of the coils in the resonance circuit. For this reason, the value Q (quality factor) is used to indicate coil performance.

Filter Type (TYPE)

This chooses the type of filter for each frequency band. The available filter parameters change according to which type of filter you choose to use. Unavailable parameters are indicated by “no.”

			Reference	Gain	Q
			frequency
PEAK	Peaking	Creates peaks and valleys around the	yes	yes	yes
		reference frequency
LSV	Low shelving	Adjusts the band lower than the	yes	yes	no
		reference frequency
HSV	High shelving	Adjusts the band higher than the	yes	yes	no
		reference frequency
LPF1	Low-pass filter 1st	Passes only sound lower than the	yes	no	no
		reference frequency
HPF1	High-pass filter 1st	Passes only sound higher than the	yes	no	no
		reference frequency
LPF2	Low-pass filter 2nd	Steeper response curve than “LPF1”	yes	no	yes
HPF2	High-pass filter 2nd	Steeper response curve than “HPF1”	yes	no	yes
BPF	Band-pass filter	Passes only sound near the reference	yes	no	yes
		frequency
BRF	Band-reject filter	Blocks only sound near the reference	yes	no	yes
		frequency
THRU	Thru	Passes the audio without modification	no	no	no

Dynamics

This is a group of effects that dynamically control the amount of change in the output level based on the input level.

■Compressor

This suppresses or lowers the output level of loud sounds to reduce changes in volume. Input signals that exceed the threshold are suppressed by an amount determined by the Ratio parameter.

Compressor OFF/ON (COMP)

This is the On/Off switch for the compressor effect.

Using Effects

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